Stock Valve Lift

[Jeff Lee]

Alan,
That's fine on a "normal" application; i.e., SBC, SBF, the normal big blocks, etc.
I raced a 2.2L FWD with cam followers or tappet buckets, whatever they were called. I set records with the car. NHRA has nothing close to those in their arsenal.
I can't see the problem if you can show the checking lifter is identical in specs to the lifter that came out. But it is their game and you are right.

[Alan Roehrich]

Jeff, I have no doubt at all that NHRA doesn't have the stuff to check oddball engines.

It seems sort of odd that you couldn't just bring your own solid lifter to show how you checked the lift on your hydraulic lifter engine, but I guess they figure you can "game the game" with the right parts, and you probably can.

[gmonde]

if you have your own lifter and they will not except it ,have the info ready to present ,,have a mesurement and a bench mark part that can inserted in the in the cup of the lifter that can be mesured with calipers as that is the tool of choice they will more than likely see ,if you are that close to the tolerance ,,but as jeff said the lift doesent have to be to the max or even over , i found a huge gain in lift by switching to after market stamped steel rockers ,gained .030 of lift and ran those for two weekends before a divisional event and it didnt drop any et (didnt change anything else)

gmonde

[larry dowty]

thanks alan, we all know it is there game was just curious.

[Tom Moock]

BlueOvalRalph, Nhra has a devise they put your push rod and your lifter in to find correct length of your set up,then they put their lifter and your push rod in to get same length, they use a adjustable lifter, then they use this set up to check lift,. Tom