Identifying a LQ9......hopefully not a LQ4.

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Mar 8, 2016 | 12:31 PM

#41

75chevyboy

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can u identify this engine

Quote:

Originally Posted by 69LT1Bird

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.

(1GYEK63NX3R263522)

Mar 8, 2016 | 12:37 PM

#42

93Z2871805

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Quote:

Originally Posted by 75chevyboy

(1GYEK63NX3R263522)

2003 Escalade. It's an LQ9.

Mar 8, 2016 | 03:12 PM

#43

64post

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From: Sonoma Co. Ca.

LQ4 could have an issue with T56 bolting up to it due to the thick crank flange, not sure about the LQ9. Pull a plug and look into the cyl with a borescope and you'll know for sure what you have.

Mar 8, 2016 | 09:20 PM

#44

tfi racing

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From: Cedar,BC

Quote:

Originally Posted by 64post

LQ4 could have an issue with T56 bolting up to it due to the thick crank flange, not sure about the LQ9. Pull a plug and look into the cyl with a borescope and you'll know for sure what you have.

Only an issue with the 99-2000 iron head 6.0,after that the only difference is the dished piston in the LQ4.

Mar 9, 2016 | 07:51 AM

#45

truckdoug

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From: Portlandia

i never needed a borescope to check piston dish if the engine is out of the vehicle. i use one of these and stick my eyeball down there next to it.

https://www.zoro.com/streamlight-ind...Q&gclsrc=aw.ds

with 15* valve heads it's pretty easy to see the piston at TDC

Mar 9, 2016 | 08:30 AM

#46

runsfromdacops

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i thought lq4 had iron heads and the built in crank spacer

Mar 10, 2016 | 08:10 AM

#47

truckdoug

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From: Portlandia

yup, its true. better leave them alone and just look for lq9's

Mar 10, 2016 | 04:42 PM

#48

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From: pensacola fl

Quote:

Originally Posted by runsfromdacops

i thought lq4 had iron heads and the built in crank spacer

only 99 and early 2000s if its a factory untouched aluminum head, you have no worries with the crank, you can just remove the spacer

Mar 10, 2016 | 06:35 PM

#49

69-chvl

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From: THORNTON, PA (NEAR PHILLY)

If you drop the pan and look at the rods and find them to be of the floating variety, its a good chance its an LQ9. All LQ9's had the floaters...at least my 02 LQ9 does.