Identifying a LQ9......hopefully not a LQ4.
#21
Staging Lane
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Well, i figured it out. According to a book i bought on the weekend about building LS1's and such, they say that the LQ4 have a throttle cable, whereas the LQ9 is throttle by wire. If thats the case, shes a LQ9. Of course, they also say that a LQ4 is a 6.0L displacing 364ci and the LQ9 is a 6.0L displacing 377ci !??!?!
#22
11 Second Club
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The book is wrong. They all are have throttle by wire from 2003 till today. Sorry. If you can find the VIN in the engine I can run it and let you know what is from. I have a 2002 LQ4 that has a cable, 2003 went to throttle by wire in the trucks. PM me the VIN if you have it.
#24
The LQ9 applications are as follows:
* 2002-2006 Cadillac Escalade
* 2002-2006 Cadillac Escalade EXT
* 2003-2006 Cadillac Escalade ESV
* 2003-2007 Chevrolet Silverado SS
* 2004-2005 Chevrolet Silverado and GMC Sierra Vortec HO Edition
* 2006-2007 Chevrolet Silverado and GMC Sierra VortecMAX Option
* 2002-2006 Cadillac Escalade
* 2002-2006 Cadillac Escalade EXT
* 2003-2006 Cadillac Escalade ESV
* 2003-2007 Chevrolet Silverado SS
* 2004-2005 Chevrolet Silverado and GMC Sierra Vortec HO Edition
* 2006-2007 Chevrolet Silverado and GMC Sierra VortecMAX Option
#28
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Mine came out of a 2003 express van and its a cable driven throttle. It is an lq4. However, a came change and some reflashing of the computer, your gonna have 400 hp with a set of good headers. With the lq4 and lower compression, you won't have to worry too much about the octane.
#29
#31
Hi guys, sorry for insisting on this thread. I got my "LQ9" (or that's what the guy who sold it to me said it was) today, I took a plug out and went with a piece of wire all over the piston and I did not feel anything, I felt it flat, but still have my doubts.
How easy would be to feel the not flat pistons on a LQ4?
How easy would be to feel the not flat pistons on a LQ4?
#32
Still feeling it flat... but not sure.
I just took this pics...
I need to leave feedback for this engine on e-bay.
I just took this pics...
I need to leave feedback for this engine on e-bay.
Last edited by LSfan70s; 03-29-2008 at 08:37 PM. Reason: forgot something...
#34
Staging Lane
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I pulled a head off of mine to verify flattops. Is there not an easier way to tell? vin # on block anywhere? No numbers anywhere to differentiate a lq4 from a lq9?
#35
I think that the one who can answer this easy is someone with a LQ9 and a LQ4 in his/hers hands. But it seems that there's none with that in here.
#36
#37
I just found this posting. I have a 2001 GMC Sierra C3. It is factory with a LQ4 and is fly by wire. It was the only a 1 year truck. The next year these became the Sierra Denali. Hope this helps someone.
#38
The book is wrong. They all are have throttle by wire from 2003 till today. Sorry. If you can find the VIN in the engine I can run it and let you know what is from. I have a 2002 LQ4 that has a cable, 2003 went to throttle by wire in the trucks. PM me the VIN if you have it.