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.

 

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...

 

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

 

LS7 lifters ported/milled 862's...i dont mind buying a checker just thought i might save some time if someone else already knew.

 

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..

 

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.

 

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

 

M_e_a_s_u_r_e!!!

 

The cup in the ls7 lifter is .060 taller then the older ls1 lifter.. Also with a .060 preload

 

So it looks like its best to measure, no big deal