Id'ing a LQ4 vs an LQ9

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07-23-2009, 04:21 PM

#21

Sales2@Texas-speed

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Quote:

Originally Posted by snksknr

Don't mean to hijack this thread but what is the stock compression ratio on the lq4? thanks

LQ4 (dished piston) was about 9.5:1 SCR.

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07-27-2009, 12:33 PM

#22

jleews6

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Quote:

Originally Posted by 12secSS

As adam1803 said, but to add you are thinking of the LS2.

LQ4/LQ9 = Iron Blocks
LS2 = Aluminum Block

All three are 6.0L, and the LQ9 is an iron version of the LS2 but with 317 heads, versus the LS2 and the 243 heads.

I just got my 6.0L (LQ4?) and it has 317 heads. Did all the 6.0s have the 317 heads?
Thanks

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07-27-2009, 02:33 PM

#23

Gaunt

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Quote:

Originally Posted by jleews6

I just got my 6.0L (LQ4?) and it has 317 heads. Did all the 6.0s have the 317 heads?
Thanks

I think some of the early LQ4s had the iron version of the 317 instead of the aluminum one, but that was only for a year or so (someone correct me). But yes, 317s are the same on both LQ4 and LQ9, except the 6.0 liter LS2, which someone in the thread earlier said it had 243s.