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Old 02-04-2020, 02:07 PM   #7
RobbyBeefcake87

 
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Drives: 2018 Camaro SS 1LE
Join Date: Aug 2018
Location: Tampa Florida
Posts: 1,980
Quote:
Originally Posted by oldman View Post
They do not work on AFM lobe.

Even small lift aftermarket cams have faster lift ramps, so it is not only peak lift. I would assume ls7 lifters would work on a gm hot cam. Cam Motion is known for a mild ramp.

Fast ramps = power, I went with a .592 lift custom grind cam motion and Johnston lifters, I’ll change valve springs every 40k miles. I run Texas speed dual .660 springs because I believe boost, rpm and valve bounce actually failed my ls7 lifter on a steep lift cam. So my fix is a stiff spring, lower lift, and a strong lifter.
The other stuff isn't really applicable towards my inquiry since I wouldn't be boosting, spinning above 7k, or getting a high lift cam above .600.... but is it confirmed that they wouldn't work with the stock cam with afm lobes?
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