Lifter rule in Stock

[Grey Ghost]

Originally Posted by Alan Nyhus

Hi Phil.

In a way, a hydraulic cam switched to solids actually loses lift when checked the NHRA way. Since the NHRA checking clearance is .000 (zero), a solid cam loses the lift from the lash when it's running.

A hydraulic lifter is theoretically always at .000 (zero) when it's running.

Good Morning Al.

I understand that. Why the rule change then? Higher RPM capability?

[Alan Nyhus]

Originally Posted by Grey Ghost

Good Morning Al.

I understand that. Why the rule change then? Higher RPM capability?

One less thing for Tech to check, would be my guess?

[ron mattson]

My guess would be for ease of tech, the performance
Will change very little , not gonna turn a 6500
Rpm engine into a 8500 or gain a bunch of power.
I would think at very best .03-.05 the current generation
Of limited travel "hydraulic" lifters are solids already!
Just my .02$$ lol!!!!

[Bob Bender]

Originally Posted by ron mattson

My guess would be for ease of tech, the performance
Will change very little , not gonna turn a 6500
Rpm engine into a 8500 or gain a bunch of power.
I would think at very best .03-.05 the current generation
Of limited travel "hydraulic" lifters are solids already!
Just my .02$$ lol!!!!

x2