LS7 Lifters
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LS7 Lifters
Did GM ever switch over to LS7 Lifters in LS1 motors, or are they just direct replacements for the LS1 lifters now? I have a stock '04 LS1 from a C5 and I'm trying to determine what lifters were stock.
Reason I am asking, is when Patrick G spe'c out my cam, he gave me a formula for calculating the theotretical push-rod length, and he used 7.380 for stock push rod length and added the 2x the difference in the base circle. I had always heard 7.400 was stock length, but I know LS7's require short rods due to the cup sitting up higher.. I know Pat seems to know his stuff, so I thought maybe my '04 motor cam with the LS7 Lifters, hence the shorter push rods? Thanks, Jason.
Reason I am asking, is when Patrick G spe'c out my cam, he gave me a formula for calculating the theotretical push-rod length, and he used 7.380 for stock push rod length and added the 2x the difference in the base circle. I had always heard 7.400 was stock length, but I know LS7's require short rods due to the cup sitting up higher.. I know Pat seems to know his stuff, so I thought maybe my '04 motor cam with the LS7 Lifters, hence the shorter push rods? Thanks, Jason.
Last edited by Racinjason424; 08-09-2010 at 08:27 PM.
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That's good to hear! I was expecting to have to go with shorter push rods, with the cup sitting up some .050/.060 higher..?? I will, of course, check with a p/r checker before final assembly. Wouldnt be the end of the world if I had to buy my fourth set of differentn lenght pushrods!