Does the big mutha thumpr cams make good power

Big Mutha Thumpr CamshaftHyd. Flat Tappet2500-6400rpmAdv. Dur. 295 Int./313 Exh.V. Lift .517 Int./.502 Exh.Lobe Angle 107 deg. Im not completely sold that those cams make good power. They put some crazy split duration on them and a really narrow LSA to make it have a nasty idle, that about it. If you want it to SOUNDS nasty, sure...but if you want it to RUN nasty, than pick the camshaft for the application. My opinion Dec 8, 2008 #3 hhott71 R.I.P 11/19/18 csl plasma cards COMP Thumpr camshafts use an early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note. Performance COMP developed the Thumpr, Mutha' Thumpr and Big Mutha' Thumpr cam grinds to not only make a great idle sound but also to produce a significant gain both horsepower in torque.Big Mutha Thumpr CamshaftHyd. Flat Tappet2500-6400rpmAdv. Dur. 295 Int./313 Exh.V. Lift .517 Int./.502 Exh.Lobe Angle 107 deg. diablo immortal crusader build Comp Cam's Mutha Thumpa cams are designed to give the car a rumbling lopey exhaust sound but not much else, they typically get really crappy mileage and lack power, they get the sound by having a much longer exhaust duration, and typically sacrifice a great deal of the engines plenum vacuum that allows power brakes too work.Actually the mutha thumpr are one the the best soudning NSR cams and they only require cam limiters also they provide 5 more HP than normal NSR cams. Althought mutha thumpr are more for strip due to the limitations of gears. Go to brenseed and listen to the thumpr cam vid. 2008 Mustang GT, BKid Registered Joined Jan 20, 2008 5,838 Posts brake switch freightliner m2 Search this website. COMP developed the Thumpr, Mutha' Thumpr and Big Mutha' Thumpr, Mutha' Thumpr and Big Mutha' The Power of Choice. Currently, COMP offers the Thumpr cams in three different flavors in increasingly radical grinds for carbureted engines. The baseline is the Thumpr for smaller or more basic engines. For Chevy small blocks Thumpr cams are the most popular option.Search this website. COMP developed the Thumpr, Mutha' Thumpr and Big Mutha' Thumpr, Mutha' Thumpr and Big Mutha' political testThe engine has an identical 4 COMP Cams 35-602-4 Big Mutha Thumpr Cam Ford 351W 2500-6400 RPM made by COMP Cams, for as low as $158 NOTES: (1) On EFI engines, performance camshafts work only with mass air induction systems Very Responsive throughout Power Band of Engine Advanced color touchscreen hand-held doubles as sensor dash Advanced color. qm.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators ... 2013 wrx hatchback Camshaft Material: Valve Springs Required: Assembly Lubricant Included: Engine Family: Chevrolet 305-350 c.i. 8 Cylinder O.E. Roller (1987-1998) RPM Operating Range: 2,500 …INT/EXH - Dur @ O motor , the internals are all stock and i want to switch out the cam it came with for one that has a real nice lopey idle I'm only do basic mechanic stuff so wheI use the Mutha Thumpr on a 355 and it has a great sound. Several guys around here have them in their cars and they produce smooth power throughout. I know that I saw a cam comparison somewhere (I think in Hot Rod mag) and the Thumpr made more power than the other comparable cams they tested.The thumpr with a little shorter intake duration and tighter lobe separation is going to make a little more low end torque, while the 280 magnum will probably make a few more horsepower on the high end due to its wider LSA and a tad more duration on intake side. Id want at least 10:1 compression with the 280 magnum and 2500-3000 stall.2010. 7. 21. ... COMP's new Thumpr line of camshafts delivers power and that great ... we do to make them work are the same things we do to make a cam work ...Automotive Stuff is your source for COMP Cams 92-602-5 - Big Mutha Thumpr Camshaft Free Shipping. Best-Price Guarantee. 30-Day Easy Returns.These cams work the same way. All the effort and energy invested in designing these camshafts is put towards making them sound a particular way. Thats your cake. Itll sound good, but itll suffer in other areas. This cam may sound great in your engine but not perform great. craigslist mcminnville Buy COMP Cams CL11-602-8 Big Mutha'Thumpr 243/257 Hydraulic Roller Cam/Lifter Kit Chevy Big Block 396-454: Camshafts ... Nothing turns heads at a car show or a cruise-in than the sound of a hard hitting, high performance idle. The COMP Cams engineering team called upon 30+ years of design experience to develop the Thumpr series ofJan 24, 2023 · I want to get a thumpr cam to wake up my big block a little bit. Yes I understand that this cam isn't as good as the XE series, but I really want that sound and anything is better than the original GM one. Motor is a 1993 454 that is stock besides a Performer 2-0 intake, 4011 800cfm carb and headers. 2008. 1. 10. ... tight lobe seperation and the overlap the cam has will make that ... should still make decent power. i think it would have been better if it ... cvv checker live or dead These cams work the same way. All the effort and energy invested in designing these camshafts is put towards making them sound a particular way. Thats your cake. Itll sound good, but itll suffer in other areas. This cam may sound great in your engine but not perform great.Jun 28, 2016 · Of course, COMP Cams has been on the cusp of this since the beginning, and has rightly introduced a new series of Thumpr Cams designed to not only provide strong, reliable and (more importantly) streetable characteristics, but also deliver that sharp, crisp “big cam” sound. Yes, you can have the sound of a big, loping, overlapping camshaft ... They are different specs, and will develope different HP in SBC if all other specs are equal. The roller thumor is duration 299/319, lift .531/.517" in a SBC. Pretty stout for any SBC build, but will make a lot of high rpm power. I still doubt 500+ hp, as that's really getting into rare air for a SBC build. see through swimsuits A good hydraulic cam like the Comp 268H will give you good performance in a 10:1 compression engine. I always liked the GM 300 hp cam for a street car, and might go up to the 325 hp hydraulics. Just me. Put some good valve springs on the heads. You don't need the super hard springs unless you want to spin over 5500 rpm.INT/EXH - Dur @ O motor , the internals are all stock and i want to switch out the cam it came with for one that has a real nice lopey idle I'm only do basic mechanic stuff so wheDec 23, 2012 · Thumpr's are what their name says they are. Big loppy sound but useless for serious use. If you just want the "sound of power" get one, but if you want true performance don't waste your money. That's just not true. The Thumpr series cams are designed to pull good in street use, but sound much bigger than they are. glock magwell adapter Jun 28, 2016 · Of course, COMP Cams has been on the cusp of this since the beginning, and has rightly introduced a new series of Thumpr Cams designed to not only provide strong, reliable and (more importantly) streetable characteristics, but also deliver that sharp, crisp “big cam” sound. Yes, you can have the sound of a big, loping, overlapping camshaft ... HiGhDRo said: sbc350 out of a 72 stingray. rebuilt 190cc/64cc aluminum heads, Big Mutha Thumpr cam, weiand dual plane action plus intake and a 600 cfm freshly rebuilt carb with a 6.5 powervalve. took it to a shop. after. Buddy stuck a mother thumper SBC cam in his boat 350" engine with ported 993 heads. Had to move the water feed tot he ... tania leal instagram Mar 23, 2007 · 13,864 Posts. #11 · Mar 24, 2007. Comp already had the N2O/Blower cams in their lineup. About 12* added exhaust duration but wide LSA. I had the NX279HR (279/294, 230/242, .537/.544, 113LSA/108ICL) in my 402 motor for a while. It woke it up real nice - replaced a Crane 286 hydraulic. So now, as Cole says, a Thumpr™ cam will let you have both the sound and the fury. Test Parameters Engine: 350cid, 290 hp, GM crate engine Cylinder Heads: RHS™ 180cc Runners, 64cc chambers (Assembly) #12023-01 Lifters: COMP Cams® High Energy™ Hydraulic Flat Tappets #812-16 Rocker Arms: COMP Cams® Magnum 1.52 Ratio #1412-16Jan 26, 2009 · Actually the mutha thumpr are one the the best soudning NSR cams and they only require cam limiters also they provide 5 more HP than normal NSR cams. Althought mutha thumpr are more for strip due to the limitations of gears. Go to brenseed and listen to the thumpr cam vid. 2008 Mustang GT, BKid Registered Joined Jan 20, 2008 5,838 Posts Big Mutha Thumpr CamshaftHyd. Flat Tappet2500-6400rpmAdv. Dur. 295 Int./313 Exh.V. Lift .517 Int./.502 Exh.Lobe Angle 107 deg. Thumpr cams make good power if you match them with good parts. Much like any other cam on the market. What the thumpr does is give you the ability to have a nasty idle without grossly overcamming your motor. For example The 279th7 thumpr specs out at 227/247* duration @ .050 and .479/.465 lift with a 107* lobe seperation.The only thing that is keeping me from going with the Big Mutha Thumper is.....I'm planning on spinning my 327 higher than 6200 rpm. It sounds cool, but I need performance more than sound. The cam specs are respectable though, just not enough in the high rpm range for me. Brewton, Nov 15, 2007 SHARE POST #15 Littleman Alliance …Find helpful customer reviews and review ratings for COMP Cams 12-602-4 Big Mutha' Thumpr 243/257 Hydraulic Flat Cam for Chevrolet Small Block at Amazon.com ... otbi subject area to table mapping COMP Cams Thumpr Hydraulic Flat Tappet Cam and Lifter Kits CL12-600-4 Cam and Lifters, Hydraulic Flat Tappet, Advertised Duration 279/297, Lift .479/.465, Chevy, Small Block, Kit Part Number: CCA-CL12-600-4Jan 24, 2023 · I want to get a thumpr cam to wake up my big block a little bit. Yes I understand that this cam isn't as good as the XE series, but I really want that sound and anything is better than the original GM one. Motor is a 1993 454 that is stock besides a Performer 2-0 intake, 4011 800cfm carb and headers. sheepadoodle puppies for sale near me Find COMP Cams Big Mutha Thumpr Hydraulic Roller Camshafts and get Free Shipping on Orders Over $99 at Summit Racing! COMP Cams Big Mutha Thumpr hydraulic roller camshafts are perfect for folks looking for great performance and wild camshaft idle. The basic science behind the Thumpr cams isn't new. This cam line delivers true high performance engine sound by "tightening" the lobe separation ... Jun 28, 2016 · Of course, COMP Cams has been on the cusp of this since the beginning, and has rightly introduced a new series of Thumpr Cams designed to not only provide strong, reliable and (more importantly) streetable characteristics, but also deliver that sharp, crisp “big cam” sound. Yes, you can have the sound of a big, loping, overlapping camshaft ... This is a video of the thumpr cams: THUMPR CAMS. It would probably have just a little bit more lope then the second cam since it has less stroke then a 350. Otherwise, thats what you can expect. I would probably go with the regular thmpr cam if you run power brakes. Although, I dont know how much vacuum they pull but with that much overlap to ... dog pups for sale Well just to let you know results willl vary on how much horse power difference on different cams will make for each setup. But on a desktop dyno there is a difference of almost 30 horsepower between the big mutha thumpr cam and the xtreme energy cam 288hr and its a little smaller and just a little more lift. You can see where I am … 07e8 code nissan All the cams available today, short of max race, have wide separation to create vacumme for power brakes and idle well with efi. I built mine for a real 11:1+ compression and want every bit of cylinder pressure I can get. The marketing campaign is kinda cheesy, but I am sure they get tons of calls asking for that "knarly, race car, lope".I once had the comp big mutha thumpr hydraulic roller cam and it does sound very wicked and actually ran well with my engine but I could never get my carb to tune right no matter what I did and I only had about 5 to 6 inches of vacuum and sucked to even drive though town. I changed it out within a couple of months cause I had enough of it.Comp Cam's Mutha Thumpa cams are designed to give the car a rumbling lopey exhaust sound but not much else, they typically get really crappy mileage and lack power, they get the sound by having a much longer exhaust duration, and typically sacrifice a great deal of the engines plenum vacuum that allows power brakes too work. gun marker pen Automotive Stuff is your source for COMP Cams 92-602-5 - Big Mutha Thumpr Camshaft Free Shipping. Best-Price Guarantee. 30-Day Easy Returns.I've heard TONS of reviews that say they don't make good power, very poor torque curve, etc. I'm positive they won't run with practically any form of EFI, and they are roller, so you will need to do the conversion $$$... They sound rank, but so does a decent bigblock swap, and it will be driveable :thumbsup: Save V Vashner RegisteredAug 1, 2008 · It's a pretty simple science, actually, and while logic would have you believe power is lost due to this overlap, results have shown the performance is actually up over similar camshafts due to... gadsden times obituaries Im not really sure why the thumpr cams get beat up and drug through the mud on the internet forums. I run the "big mutha" in my camaro with a set of vortec's and it pulls like a tractor in the midrange and screams up top. To me it seemed like a good fit for a street motor with production heads.And yes, probably a little more power. The tighter 107 lobe center on the Thumpr should wake up your relatively small-valved engine. Here's my issue with the Thumpr cams: the intake lift on those rollers seems really weak. dt466 pulling parts Jun 28, 2016 · Of course, COMP Cams has been on the cusp of this since the beginning, and has rightly introduced a new series of Thumpr Cams designed to not only provide strong, reliable and (more importantly) streetable characteristics, but also deliver that sharp, crisp “big cam” sound. Yes, you can have the sound of a big, loping, overlapping camshaft ... They are great sounding cams with very poor performance and mileage. Rev kit with that cam is not needed or beneficial. Maybe you need to ask your "ENGINE BUILDER" how many he owns. It's no secret in the real world all Comp does is widen the LSA for sound and kills performance.Comp Cam's Mutha Thumpa cams are designed to give the car a rumbling lopey exhaust sound but not much else, they typically get really crappy mileage and lack power, they get the sound by having a much longer exhaust duration, and typically sacrifice a great deal of the engines plenum vacuum that allows power brakes too work. yerf dog gocart Do Thumpr cams make good power? As tested, this cam beat all the other test cams with both heads in every category but the absolute power peak. The Thumpr made the highest peak torque, the highest average torque, the highest overall average power, the best average numbers between 2,500 and 4,500 rpm, and the best numbers from 4,500 to 6,500 rpm.2008. 1. 10. ... tight lobe seperation and the overlap the cam has will make that ... should still make decent power. i think it would have been better if it ...Big Mutha Thumpr CamshaftHyd. Flat Tappet2500-6400rpmAdv. Dur. 295 Int./313 Exh.V. Lift .517 Int./.502 Exh.Lobe Angle 107 deg.I've heard TONS of reviews that say they don't make good power, very poor torque curve, etc. I'm positive they won't run with practically any form of EFI, and they are roller, so you will need to do the conversion $$$... They sound rank, but so does a decent bigblock swap, and it will be driveable :thumbsup: Save V Vashner RegisteredThe Power of Choice. Currently, COMP offers the Thumpr cams in three different flavors in increasingly radical grinds for carbureted engines. The baseline is the Thumpr for smaller or more basic engines. For Chevy small blocks Thumpr cams are the most popular option. lfo INT/EXH - Dur @ O motor , the internals are all stock and i want to switch out the cam it came with for one that has a real nice lopey idle I'm only do basic mechanic stuff so wheThumpr cams are available in both hydraulic flat tappet and hydraulic roller designs for an astonishing array of domestic V8’s. Who are we kidding, though, the sizzle on this steak is that sound and COMP offers up three different levels of rumpety-rump for your consideration: Thumpr, Mutha’ Thumpr, and Big Mutha’ Thumpr. craftsman t3200 attachments 2017. 1. 2. ... Pretty hard to have a clean smelling idle with a big cam, ... for the 327/350HP camshaft, and will idle better and make more power ...The thumper cams have been tested on sb chevy 350, maybe a couple 302's. The problem is that this is a 4v cleveland. Its hard to find a good new cam because most of the 351c were 2v and the 4v were only made 3 years. The huge overlap has me stumped. 1971 Mach 1 468cid 4SP, 3 55 Gears 1967 Fastback GT 395cid 4v 4SP 3 55 gears slope unblocked 911 All the effort and energy invested in designing these camshafts is put towards making them sound a particular way. Thats your cake. Itll sound good, but itll suffer in other areas. This cam may sound great in your engine but not perform great. The best performing cam for your engine may perform great......it just might not sound as good.I know its a huge cam and there are better and easier ways to achieve my hp goal, ... and the chamber is shaped different) it will make some good power.Mar 23, 2007 · 13,864 Posts. #11 · Mar 24, 2007. Comp already had the N2O/Blower cams in their lineup. About 12* added exhaust duration but wide LSA. I had the NX279HR (279/294, 230/242, .537/.544, 113LSA/108ICL) in my 402 motor for a while. It woke it up real nice - replaced a Crane 286 hydraulic. We were pleased with the camshaft as it made the most peak power and average power across the board. When compared to the … swgoh galactic conquest guideSee all 16 photos. With a dollop of sealer applied to the studs, they were installed in the deck of the small-block Chevy and torqued in place. Thumpr Cams Used and Subsequent Dyno Results. 1 ...2014. 1. 21. ... On a basically stock 350 SBC, has anyone used a Thumpr cam? How lumpy IS the idle? And does it not affect low RPM power as claimed?This cam should work well with your engine, but switching to a dual plane intake like an edelbrock performer RPM will increase low end torque (and therefore street driveability) The Team G is a great intake, but a single-plane intake may be a little aggressive for the rest of your combo. person found hanging from tree Comp Cam's Mutha Thumpa cams are designed to give the car a rumbling lopey exhaust sound but not much else, they typically get really crappy mileage and lack power, they get the sound by having a much longer exhaust duration, and typically sacrifice a great deal of the engines plenum vacuum that allows power brakes too work.Jan 27, 2022 · I have used the Big Mother Thumper cam roller version and all I can say is they all can be used with an automatic transmission as long as you have enough of a stall convertor for a size of what cam you use and also a proper rear end gear ratio to keep your engine in the proper range to work with the cam you choose. lesbian tik tok As a daily driver this cam would suck big time. If you want the big cam sound, pick a cam with a tight LSA but a lot less duration to keep the RPM HP peak below 5800 and overlap at or below 60*. Specs for Big Mutha Thumper: Comp Cams 249-12-602-4 Exhaust Valve Lift (in.)0.486Intake Valve Lift (in.)0.500Int. Duration @ .050 in. (Deg)243Exh.COMP Cams Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Lift .500"/.486" Duration 295/313 RPM Range 2500 to 6400 ; Engine Make/Size. Chevy Small Block (262- ... drunk driving accident today They are different specs, and will develope different HP in SBC if all other specs are equal. The roller thumor is duration 299/319, lift .531/.517" in a SBC. Pretty stout for any SBC build, but will make a lot of high rpm power. I still doubt 500+ hp, as that's really getting into rare air for a SBC build.The Power of Choice. Currently, COMP offers the Thumpr cams in three different flavors in increasingly radical grinds for carbureted engines. The baseline is the Thumpr for smaller or more basic engines. For Chevy small blocks Thumpr cams are the most popular option.what do you think about a big mutha thumpr cam for 454 board 30 over cast iron 396/375 heads thats all i know about the engine. the car is 4 speed. would it work ok for street car? thanks From everything I've read, those cams are more for sound, not so much for power. Underkill ! hydro462 Registered Joined Jun 17, 2009 4,318 Posts #6 · Mar 2, 2020 dateline schedule 2022 2,396 Reviews Scanned. Rank No. #1. COMP Cams 12-602-4 Big Mutha' Thumpr 243/257 Hydraulic Flat Cam for Chevrolet Small Block. 295/313 Advertised Duration, 243/257 Duration @ .050 inch, .500 inch/.486 inch Lift, 107 Lobe Separation. Valve spring upgrade required.May 2, 2009 · The Thumpr scored highest in every category except absolute power peak. The Thumpr made the highest peak torque, highest average torque, highest overall average power, best average numbers between 2500-4500rpm, and the best numbers from 4500-6500rpm. They used 2 different sets of heads and the Thumpr scored the highest with both sets of heads. Aug 13, 2022 · The engine has an identical 4 COMP Cams 35-602-4 Big Mutha Thumpr Cam Ford 351W 2500-6400 RPM made by COMP Cams, for as low as $158 NOTES: (1) On EFI engines, performance camshafts work only with mass air induction systems Very Responsive throughout Power Band of Engine Advanced color touchscreen hand-held doubles as sensor dash Advanced color. nopixel car list May 2, 2009 · The Thumpr scored highest in every category except absolute power peak. The Thumpr made the highest peak torque, highest average torque, highest overall average power, best average numbers between 2500-4500rpm, and the best numbers from 4500-6500rpm. They used 2 different sets of heads and the Thumpr scored the highest with both sets of heads. period 1 week late negative pregnancy test brown discharge I have used the Big Mother Thumper cam roller version and all I can say is they all can be used with an automatic transmission as long as you have enough of a stall convertor for a size of what cam you use and also a proper rear end gear ratio to keep your engine in the proper range to work with the cam you choose.2019. 10. 1. ... "Believe it or not, the Comp Cams thumper grinds run very well, ... They make a Thumper, Mutha Thumper, and a Big Mutha Thumper.Thumpr cams make good power if you match them with good parts. Much like any other cam on the market. What the thumpr does is give you the ability to have a nasty idle without grossly overcamming your motor. For example The 279th7 thumpr specs out at 227/247* duration @ .050 and .479/.465 lift with a 107* lobe seperation. can i bring my vape to cancun 2022 2020. 3. 1. ... what do you think about a big mutha thumpr cam for 454 board 30 over ... Cams 282S or the 294S, both made great power and drive-ability on ...This is a well designed cam for a Great sounding hot rod.However, it will not work in stroker motors due to intereference with … klipper relative e distance Dec 23, 2012 · I use the Mutha Thumpr on a 355 and it has a great sound. Several guys around here have them in their cars and they produce smooth power throughout. I know that I saw a cam comparison somewhere (I think in Hot Rod mag) and the Thumpr made more power than the other comparable cams they tested. This is a video of the thumpr cams: THUMPR CAMS. It would probably have just a little bit more lope then the second cam since it has less stroke then a 350. Otherwise, thats what you can expect. I would probably go with the regular thmpr cam if you run power brakes. Although, I dont know how much vacuum they pull but with that much overlap to ...2010. 7. 21. ... COMP's new Thumpr line of camshafts delivers power and that great ... we do to make them work are the same things we do to make a cam work ...The cams made great power, and to my surprise, didn't bleed off any boost. The one consistant thing I can say about the Mutha Thumpers in N/A or FI applications is that they made HP all the way to the set REV limit. The torque numbers were not very impressive with these cams, but made HP for days. Hope this helps and good luck Oct 7, 2017 #11 centurylink modem lights COMP Thumpr camshafts use an early intake valve opening and long exhaust duration create optimum overlap for powerful, hard …2012. 4. 6. ... The results of our testing prove the mettle of the Thumpr cams, great power and torque, neither component compromised in the quest for great ...Classic Big Mutha' Thumpr 243/257 Solid Flat Cam for Flathead Ford 239, 255 . SKU 41-602-7. $459.95. Shop Now. Wish List Compare. Classic Thumpr ... Power Adder. Supercharger 8 items; Turbo 4 items; Price. $0.00 - 2740 items - 545 items; Performance Package. No 2977 items; Yes 71 items; Retainer Material.Search this website. COMP developed the Thumpr, Mutha' Thumpr and Big Mutha' Thumpr, Mutha' Thumpr and Big Mutha' nina hartley facial Big Mutha Thumpr CamshaftHyd. Flat Tappet2500-6400rpmAdv. Dur. 295 Int./313 Exh.V. Lift .517 Int./.502 Exh.Lobe Angle 107 deg. Dec 31, 2015 · The Thumpr proved to be the most rev-happy as well, pulling hard to 6,600 rpm, while Cam B was out of breath by 6,200 rpmCam A and Cam B both produced peak horsepower in the 6,100- to 6,200-rpm range, but the smaller grind falls off a table after peak while the larger cam does not. Find COMP Cams Big Mutha Thumpr Hydraulic Roller Camshafts and get Free Shipping on Orders Over $99 at Summit Racing! COMP Cams Big Mutha Thumpr hydraulic roller camshafts are perfect for folks looking for great performance and wild camshaft idle. The basic science behind the Thumpr cams isn't new. This cam line delivers true high performance engine sound by "tightening" the lobe separation ... Feb 1, 2009 · Buy COMP Cams 12-602-4 Big Mutha' Thumpr 243/257 Hydraulic ... sounds so good. ... is the one for you. all the headaches of a big cam without massive power gains. ... dateline videos full episodes Comp Cam's Mutha Thumpa cams are designed to give the car a rumbling lopey exhaust sound but not much else, they typically get really crappy mileage and lack power, they get the sound by having a much longer exhaust duration, and typically sacrifice a great deal of the engines plenum vacuum that allows power brakes too work.Mar 11, 2011 · The thumpr with a little shorter intake duration and tighter lobe separation is going to make a little more low end torque, while the 280 magnum will probably make a few more horsepower on the high end due to its wider LSA and a tad more duration on intake side. Id want at least 10:1 compression with the 280 magnum and 2500-3000 stall. omega speedmaster 3861 hesalite They are different specs, and will develope different HP in SBC if all other specs are equal. The roller thumor is duration 299/319, lift .531/.517" in a SBC. Pretty stout for any SBC build, but will make a lot of high rpm power. I still doubt 500+ hp, as that's really getting into rare air for a SBC build.I have used the Big Mother Thumper cam roller version and all I can say is they all can be used with an automatic transmission as long as you have enough of a stall convertor for a size of what cam you use and also a proper rear end gear ratio to keep your engine in the proper range to work with the cam you choose.Jun 28, 2016 · Of course, COMP Cams has been on the cusp of this since the beginning, and has rightly introduced a new series of Thumpr Cams designed to not only provide strong, reliable and (more importantly) streetable characteristics, but also deliver that sharp, crisp “big cam” sound. Yes, you can have the sound of a big, loping, overlapping camshaft ... positive ev bets today All the effort and energy invested in designing these camshafts is put towards making them sound a particular way. Thats your cake. Itll sound good, but itll suffer in other areas. This cam may sound great in your engine but not perform great. The best performing cam for your engine may perform great......it just might not sound as good.The Thumpr Camshaft line of hydraulic roller camshafts from COMP Cams, introduced in 2006, has been a huge success, well beyond the company's original sales estimations. For the uninformed, the Thumpr Camshafts are designed to produce good power and torque, as well as tremendous high performance sound through careful specifications. Sidebar titleI have had some experience with Thumpr Cams. That experience lead me to install one in my current 355 build. Unfortunately, because they are marketed as a SOUND cam, people often dismiss them as poser cams. The truth is, there have been countless cam shootouts and if you install the CORRECT version of a Thumpr cam, you'll have good results. facebook spades plus