HYDRAULIC – Mutha’ Thumpr: High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
Product Features
- HYDRAULIC – Mutha’ Thumpr: High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
- 287/305 Advertised Duration, 235/249 Duration @ .050 inch, .489 inch/.476 inch Lift, 107 Lobe Separation
- Valve spring upgrade required
Very happy with this cam…. Comp cams are the best. I have a very long story here. I will try to keep it short, but what I have to say may be helpful. Originally I purchased the Performer RPM package. I researched everything and was told by few that the RPM cam was the best choice because it has been dyno matched with the heads and intake. I ran the RPM cam and lifters and I was very disappointed with the results. THEN, I heard my rockers ticking as if they were loose. After proper cam break in of cam lube and high zinc…
SAME GREAT PARTS was in good condition ,and installed in time for the rod run.. thanks for the same great parts i have used for 45 years..M.A.R.A.T.
I love this camshaft!!! Great camshaft I love the sound and performance. in my opinion the recommended stall converter for this set up is a little to conservative. you need to put a 2800 stall or higher torque converter on to run this cam on a street car.