Lifter rule in Stock

[Coleydog]

Originally Posted by Eric Merryfield

NHRA tech department clarifies recent lifter rule change

The change is to allow the use of a solid lifter in place of a hydraulic; you may not replace a flat tappet with a roller.

So what effect if any would there be on a 1993 build chrysler hydraulic lifter on a 383 big block. I assume new valve springs would be needed. Didn't change the rockers, still original as delivered.

Thanks

Eric

Can't see why new springs would be needed, better have adjustable rockers though. I thinking solids are lighter than hyd. anyway. Also a lot cheaper.