What is an LQ4 or LQ9?

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May 6, 2009 | 01:51 PM

#21

NemeSS

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From: Houston,TX

long crank flange allow the use of th350/400 and 700r4,2004r without use of 6.0 spacer.

Jun 19, 2009 | 09:35 PM

#22

Rick Speed

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From: Cleveland, Oh

I just bought a new 6.0 and I bore scoped it to see what the pistons looked like (dished or not) and they look flat with a slight ridge but also are fly cut.. is this a LQ9?

Jun 22, 2009 | 04:19 PM

#23

trnsfmr99

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From: All Over

More LQ-4 information

Quote:

Originally Posted by deadhorse66

Don't buy an early LQ4--you don't want the iron heads or the long crank flange. They are the same thing after that. LQ4 has a dished piston and LQ9 has a flat top. The floating wrist pin wasn't introduced until 2005 and it came along with the polymer skirted pistons to reduce the cold piston slap that is such an annoyance. The rods are no stronger--they are still powdered metal, just full floater. Almost any LS part that will work on an LS1 will work on them. They are NOT akin to the LS2 except that they displace the same thing, and that is about where it ends. You are talking two completely different generations of powerplants. Either one makes a suitable place to start from though.

What up. I've been reading up on this thread and I still have to ask, how would a 2004 LQ-4 motor out of a 2500 Chevy do in a 99 Camaro SS, with a t-56 and a front mount 76mm turbo? I'm going tomorrow and purchase this motor tomorrow for my car. Also, anyone have any idea how horsepower can the motor handle stock or with yalls' suggestions?

Jul 10, 2009 | 03:35 AM

#24

Ford_Assassin

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From: Jackson, Ca.

Quote:

Originally Posted by GMCtrk

In 2005, the LQ4 received all of the same internals as the LQ9.

Are talking model year or casting date?

I ask because I have a 2005 model year 6.0 long block, but the casting number is Oct 2004.

I am pretty sure its a LQ4, but can't confirm its not a LQ9 either since I don't know what it came out of.

Thanks!!

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