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Old 09-24-2020, 11:16 AM   #11
SierraMtns
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Join Date: Jun 2014
Location: Shingle Springs, CA
Posts: 869
Re: Rebuild LQ9 or...Stroke it?

Quote:
Originally Posted by clinebarger View Post
Unless your running boost or nitrous.....You don't need head studs.

Just measured the bores on a 400,000 mile LQ4 & was close to PERFECT, It is getting a 4" stoke crank & will only need to be Honed a few thousands with new standard bore forged pistons which are actually a little oversized!

Comp Cams is a JOKE, Call Cam Motion for a custom grind which are A LOT easier on valvetrian components including the lifters. I build all my LSX engines with LS7 lifters.
Just curious since your in there why not bore it out .030" and make a stoker 408? Have you had any issues with the 4" stoke and the piston coming out of the bore to far?

I couldn't find any GM LS7 lifters in stock so I went with Morel lifters.
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