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02-28-2008, 01:17 AM
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#1 |
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Registered User
Join Date: Nov 2006
Location: high point nc
Posts: 442
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Mutha Thumpr CAM
anybody tried comp cams thumpr series cams? just wanted to know how it performed and sounded. i am running a small block.
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02-28-2008, 07:07 AM
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#2 |
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Registered User
Join Date: Dec 2007
Location: Macon,GA
Posts: 62
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Re: Mutha Thumpr CAM
I am building motor and have one to put in it, but not running yet. Hoping for the best though.
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02-28-2008, 07:29 AM
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#3 |
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Registered User
Join Date: Sep 2007
Location: Greenville, SC
Posts: 60
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Re: Mutha Thumpr CAM
Check out http://www.compcams.com/Thumpr/default.asp they have some information and some sound clips. They even have a video of a dino pull.
__________________
1972 Chevy C-10 Fleetside 1979 Pontiac Trans Am 1980 Chevy Camaro (my dads) |
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02-28-2008, 07:37 AM
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#4 |
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is Certifiable
Join Date: Feb 2008
Location: Hinesville, Georgia
Posts: 160
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Re: Mutha Thumpr CAM
Whoa! Thats a good way to advertise a camshaft.
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02-28-2008, 07:50 AM
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#5 |
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Registered User
Join Date: Jul 2000
Location: Chandler, Arizona, USA
Posts: 299
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Re: Mutha Thumpr CAM
That's a great idea, but something sounds weird with them to me. Sounds fake or just different. Give me a good old fashioned nasty solid and that music to me.
--Douglas.
__________________
-1968 Chevy SWB = Frame Off/383/Muncie Car 4 speed -1968 Chevy SWB = numbers matching 307/Truck 4 speed. -1966 Chevy II = 2 door No Post/130,000 Orig miles/230 6cyl/powerglide/Vintage AC -1972 Chevy Nova = 2 door/412 Small Block -1927 Ford Roadster = Homebuilt/widened 8"/350/ Custom Everything. |
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02-28-2008, 09:14 AM
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#6 |
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Texas Big Wig
Join Date: Jan 2007
Location: Mineola, Texas
Posts: 5,620
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Re: Mutha Thumpr CAM
I dunno what kinda RPM they have the idle set to, but it seems kinda high to me
My black truck thumped better than that... Just my .02 |
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02-28-2008, 09:29 AM
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#7 |
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Account Suspended
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,814
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Re: Mutha Thumpr CAM
The Thumprs are basically a cam with longer duration than you'd typically see with the amount of lift and advance. It creates a cam with a lot of overlap, which is where the "rumpty" sound comes from, without having to live with a really radical cam.
Overall, you're giving up gas milage and some driveability for a lopey sound - but you don't end up with a complete dog at low RPM from over-camming. |
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02-28-2008, 09:42 PM
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#8 |
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Registered User
Join Date: Dec 2004
Location: Northern AZ
Posts: 7,270
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Re: Mutha Thumpr CAM
I am going to run one of the big mutha thumprs in my 383. it will be built on a vortec 350 block with a set of Holley aluminum heads. They sound wicked, but any big cam sounds like that. I am going to use it simply because they have a roller for my OEM block.
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02-28-2008, 10:04 PM
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#9 |
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Registered User
Join Date: Nov 2006
Location: high point nc
Posts: 442
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Re: Mutha Thumpr CAM
my motor will be a 383 stroker also, any other cams u guys recommend? i want the truck to have a nice lope to it but i don't want to kill my gas mileage, even though i will be running a 700r tranny.
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