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milled heads .30, What length pushrods

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Old 10-05-2009, 08:51 PM
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Default milled heads .30, What length pushrods

Im hoping someone has milled their heads and knows what the correct pushrod length is im needing, Dont really want to have to buy a length checker and all that....Any help is appreciated

Heads are milled .30 std. deck height.
Old 10-05-2009, 09:03 PM
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Wish I could help...I'm having my 317's milled .030 when I put my LQ9 together, and I bought a pushrod length checker, it was $13 at the time, I think that they're $18 now. If you're in Jersey I'll lend it to you

What lifters are you using, that makes a difference too...the new LS7 lifters have a taller cup then the original GENIII lifters...
Old 10-05-2009, 09:14 PM
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were on the same page.. here also...

im gonna be running ls7 lifters / guides.. and my 317's are also milled .30

prob still the same 7.4
Old 10-05-2009, 09:19 PM
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LS7 lifters ported/milled 862's...i dont mind buying a checker just thought i might save some time if someone else already knew.
Old 10-05-2009, 09:24 PM
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Isn't the ls7 lifters shorter then the ls1 style?? I think so.. I would run the 7.35's in there.. Or get a PR checker... It is good to be dead nuts on, but the hydraulic lifter will surely take up a few thousandths in..
Old 10-05-2009, 09:26 PM
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Stock pushrods are 7.380". So if you chop .030" off the heads you would require 7.350" pushrods. Regarding the LS7 lifters, I have no experience with those, but I've read they like shorter pushrods than stock.
Old 10-05-2009, 09:36 PM
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Originally Posted by Mangled03gmc
Isn't the ls7 lifters shorter then the ls1 style?? I think so.. I would run the 7.35's in there.. Or get a PR checker... It is good to be dead nuts on, but the hydraulic lifter will surely take up a few thousandths in..
The lifters are the same on the outside, but the cup that the pushrod rides on is taller. hirdlej posted pics of them a while back
Old 10-05-2009, 09:41 PM
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M_e_a_s_u_r_e!!!
Old 10-05-2009, 09:42 PM
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The cup in the ls7 lifter is .060 taller then the older ls1 lifter.. Also with a .060 preload
Old 10-05-2009, 09:46 PM
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So it looks like its best to measure, no big deal


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