65 grams lifter
Moderator: Team
65 grams lifter
Do you all think if I installed a lifter that 50 grams less than the lifter I currently use will change my peak rpm that I running now.And would that amount of gram lose per lifter make anymore hp.
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Re: 65 grams lifter
Define your use. Those turning 9,500 RPM for five to twenty-four hours would want the lighter lifters. The rest of us on a sliding scale down to not at all.
Jack Vines
Studebaker-Packard V8 Limited
Obsolete Engineering
Studebaker-Packard V8 Limited
Obsolete Engineering
Re: 65 grams lifter
I've seen estimates of the relative importance of valve side weight vs. push rod side of anywhere from 3 to 5X...
Felix, qui potuit rerum cognscere causas.
Happy is he who can discover the cause of things.
Happy is he who can discover the cause of things.
Re: 65 grams lifter
Shooting from the hip here...if the prevailing theory is that pushrod weight hardly matters (and you pick up strength with a bigger pushrod), and the lifter is underneath that heavy pushrod, then I can’t see a lighter OR heavier lifter being an issue. Plus a lifter is so close to the axis that it shouldn’t matter.
I think your looking at a salesman’s point of view.
At least that’s my simpleton point of view...
I think your looking at a salesman’s point of view.
At least that’s my simpleton point of view...
NHRA SS/G
1970 AMC AMX - 390 4-speed
Advanced Clutches - Red Line Racing Cams
1970 AMC AMX - 390 4-speed
Advanced Clutches - Red Line Racing Cams