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Eric Merryfield · 12-08-2016, 10:28 PM

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

12-08-2016, 10:28 PM	#3
Eric Merryfield Senior Member Join Date: Apr 2008 Posts: 872 Likes: 1 Liked 502 Times in 130 Posts	Re: Lifter rule in Stock 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 __________________ Eric Merryfield 1883 STK