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Old 05-22-2007, 05:58 PM
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? about the new Thumper cam from Comp.

Any one had the pleasure of stab'in one of thiese new cams, into there motor yet? just wondering how good they perform, and if there worth considering for a 350 sbc. On the Comp site, the smallest thumper cam sounds meaner than the 270HR i've got in my sbc now. Oppinions Please

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Old 05-23-2007, 08:20 AM
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Re: Thumper cams

I've got one sitting in a box ready to go in the 350 I'm building. I went with it for the sound and it's supposed to be similar to an RV grind which will save me some fuel, that and the noise should annoy my hybrid driving neighbor
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Old 05-23-2007, 01:57 PM
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"the noise should annoy my hybrid driving neighbor"
lol,thats probably why comp originally built them,lol.
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Old 05-23-2007, 02:16 PM
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re: ? about the new Thumper cam from Comp.

I am showing my neighbors some mercy; I got the regular Thumper instead of the Mutha Thumper. The sound clip of that one had me drooling. I'm still trying to get that one into my phone as a ring tone.
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Old 05-23-2007, 07:00 PM
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I think the mutha thumpr sounded mean but I cant find a clip of the big mutha thumpr.
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Old 04-19-2011, 08:53 PM
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mutha thumper

tuning is a beast
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Old 04-19-2011, 09:38 PM
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Total pieces of crap that have so much overlap you can't get a good vacuum signal to the carb to tune it. Many people on here have made the mistake of installing one and wind up removing them pretty quick. Most people I know could care less how your engine sounds, show us how it runs. Just sayin'.
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Old 04-19-2011, 10:16 PM
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muthr thumper

what would be a good hyd roller replacement?
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Old 04-19-2011, 11:05 PM
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All these cams are is the basic "fad" cams. They make a engine lope and sound mean, all bark and no bite. They`re for people who can`t make a regular high performance cam lope. For example, my best friends 350 has a hydraulic roller cam with .215 duration, and it says "slight lopey idle" and this is a single pattern cam. This cam lopes real nicely in gear at idle, however most will install it and it won`t lope. why? It`s all in the tune.
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Old 04-20-2011, 01:40 AM
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like double vision said, all it takes is a lil bit of tune, headers, the exhaust positioning(tuning) , and some of my favorite things for a chevy is a dual exhaust with two cherry bomb glass packs i dont go really fancy like what all these people with the loud mouth set ups, those people annoy me haha, so loud yet they get away with that
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Old 04-20-2011, 01:46 AM
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o and double vision, your buddys cam profile seems to have intrested me, whats the specs on that? Is it chevy?
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Old 04-20-2011, 12:22 PM
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This is the retro fit cam, however, they also have this same cam for OEM roller cam blocks which is what he`s running.
http://www.summitracing.com/parts/CCA-12-420-8/
His combo consists of RHS Vortec heads. With this cam and combo, it has absolutely killer out of the hole torque with 3.42 gears and gets good fuel economy.
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Old 04-20-2011, 04:35 PM
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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. I put in a lunati voodoo cam much smaller and I loved every bit of it and got 12 to 13 inches of vacuum and did not have to do a whole bunch to tune carb and ran very strong still and is much better that way it is now. Those cams have so much overlap to me there are not even worth buying unless its something you don't plan on driving much but they need a lot of stall for auto transmission and locked out timing and to me too much hustle when you can get other style cams which might not lope as much but they sound great none the less and perform way better with the matching setup.
eric
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Old 04-20-2011, 05:49 PM
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Quote:
Originally Posted by eric32
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. I put in a lunati voodoo cam much smaller and I loved every bit of it and got 12 to 13 inches of vacuum and did not have to do a whole bunch to tune carb and ran very strong still and is much better that way it is now. Those cams have so much overlap to me there are not even worth buying unless its something you don't plan on driving much but they need a lot of stall for auto transmission and locked out timing and to me too much hustle when you can get other style cams which might not lope as much but they sound great none the less and perform way better with the matching setup.
eric
One more reason why people should be looking at cams that match their application and not because they sound cool.
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Old 01-11-2012, 03:48 PM
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Quote:
Originally Posted by Blazin72
One more reason why people should be looking at cams that match their application and not because they sound cool.
x's 2 say it again lol you cant be any righter
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