LQ9 In a 1970 Suburban

[BigFatRedNeck]

Has anyone put in a LQ9 into a 4WD Suburban? I'm going to mount it up to a 400 Turbo and was curious what type of issues to watch for. Motor Mounts? Cross Member placement. Transfer Case Linkage.

[OldCreek]

The great thing about putting it in a 4x4 is that you can potentially leave the t.c. in the stock location and then mount the motor anywhere it needs to be by sliding the mount forward or back.

Edit:
I dry fit sbc motor mount/diy4x4 first gen motor mounts today and they do not clear the oil pan. It looks like the 73+ mounts/crossmember clears just fine....


I was worried that there weren't enough threads about 4x4 GenIII/IV placements but it doesnt seem that big of a deal.

I should be mounting my LQ9 in my Blazer in the next week or so...then I can worry about all the other stuff...

[sweet70beast]

Dumb Question: What's a LQ9?

[OldCreek]

Its a 6.0L GenIII LSx motor. Probably the highest output truck motor of that generation...correct me if i'm wrong. It's just like the LQ4 but with flat top pistons (not dished) so it has a bit higher compression and, therefore, rated for more hp/tq. Iron block, aluminum heads. Was found it the Heavy Duty line of GM trucks and in some Cadillacs.

[boostat4500]

I have one in my burb right now. Actually it's on a stand in the garage, prepping the burb for paint, but it was in there for the previous 2 years. It's a pretty easy swap in a 4x. I ended up using my stock tranny x-member in the factory location. Truck was originally a 4 speed. The engine crossmember I made myself so I can't help ya there. Glad to help with any specific questions you have or problems you run into, just let me know.

['63GENIII]

I got my mounts from Summit. Haven't done the install as of yet, still have to send out the harness and computer. I'll be watching this thread. Money's kept me from getting more done. Your's should be a cool project!! Good Luck. Chris

[AMD6769]

how about some pics guys

[boostat4500]

Here's a couple. Far from pretty, but got the job done. When it goes back in after paint, it will look much better!

[BigFatRedNeck]

I dropped my suburban and LQ9 off at hillbillyhotrodz.com to have them properly mount the engine into the frame. I bought a couple of different conversion kits and nothing worked out for my talent level. I will post some pics after its complete and let you know how they did.

[Dieselwrencher]

That cross member almost looks like it is dropped enough to put a cummins in there. Very nice transplant there!

[Critter]

Originally Posted by OldCreek

Its a 6.0L GenIII LSx motor. Probably the highest output truck motor of that generation...correct me if i'm wrong. It's just like the LQ4 but with flat top pistons (not dished) so it has a bit higher compression and, therefore, rated for more hp/tq. Iron block, aluminum heads. Was found it the Heavy Duty line of GM trucks and in some Cadillacs.

I think you were spot on until your last sentence. The LQ9 (345 HP) was found in the Escalade, Chevy SS Silverado, and the Chevy/GMC Vortec Max, all which are "light duty" 1/2 ton platforms. The LQ4 (300-325 HP depending on the application) was the engine in the "heavy duty" 2500 and 3500 trucks, along with 3/4 ton Vans, GMC Denalis, 3/4 ton Suburban, 1500 HD, and the Hummer H2. Basically everything I said here is applicable for the older body style vehicles i.e 1999-2006.

By 2007 you start to see the LY6, L76, LFA, L92 which are similar but different.

...somebody correct me if I am wrong.