The store will not work correctly when cookies are disabled.
JavaScript seems to be disabled in your browser.
For the best experience on our site, be sure to turn on Javascript in your browser.
We use cookies to provide you with the best possible user experience. By continuing to use our site, you agree to their use. To learn more, view our
Cookie Policy .
CLOSE
Free #1221 Air Cleaner With AVS or Performer Carb Purchase
Shop Edelbrock
Big Mutha' Thumpr 243/257 Hydraulic Flat Cam and Lifter Kit for AMC 290-401
Big Mutha' Thumpr 243/257 Hydraulic Flat Cam and Lifter Kit for AMC 290-401. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
More Information
UPC
036584214397
Manufacturer
COMP Cams®
Emissions Code
Engine Family
AMC 290-401 c.i. 8 Cylinder (1966-1991)
RPM Operating Range
2,500-6,400
Cam Type
Hydraulic Flat Tappet
Camshaft Series
Thumpr
Camshaft Gear Attachment
1-Bolt
Usage
Street/Strip
California Proposition 65
WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Advertised Intake Duration
295
Advertised Exhaust Duration
312
Intake Duration at .050 Inch Lift
243
Exhaust Duration at .050 Inch Lift
257
Intake Valve Lift
0.512
Exhaust Valve Lift
0.497
Lobe Separation
107
Lifter Style
Hydraulic Flat Tappet