6.0 Questions
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On The Tree
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From: Alabama
6.0 Questions What all has to be changed to put a 6.0 LQ4 in my 98 Z28 Camaro? I'm going to take out my LS1 because it lost oil pressure and started making a noise. So are there any differences in the LQ4"s? Like what year 6.0"s use the same flexplate as my LS1? I know there are some differences in the cranks or something. Like for example a 2000 LQ4 vs a 2005 LQ4 can anyone shed any light on the differences in them and how can I tell what they are by looking at them. I am in the market for one. Thanks for any help and advice.
2001 and up LQ4/LQ9 have the correct crank. Nothing has to be changed. You drill and tap one hole on the drivers side front of the block for the accessory bolt, and that's it. Make sure not to get 2007 and up because they use a 58x wheel.
Get a 6.0 LQ4/9 manual. You'll need it for torque specs and instructions on swapping oil pan, intake, etc. You can find it online.
Swap over all front accessories, including balancer. As pointed out, you'll need to drill/tap one hole
Swap over the intake/injectors/TB, exhaust, oil pan, pickup, windage, dipstick, flexplate.
You'll need new GM balancer and flexplate bolts.
You can screw up any of the above operations, so follow the manual.
Swap over all front accessories, including balancer. As pointed out, you'll need to drill/tap one hole
Swap over the intake/injectors/TB, exhaust, oil pan, pickup, windage, dipstick, flexplate.
You'll need new GM balancer and flexplate bolts.
You can screw up any of the above operations, so follow the manual.
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Thread Starter
On The Tree
Joined: Dec 2013
Posts: 107
Likes: 0
From: Alabama
I think he thought the ports were different.I believe I want a Lq9 seeing how my car will be a motor/nitrous set up. What did they come in? How can i know that its not an Lq4? So when I put a cam in it what springs are good? Also do I have to change pushrods and will the truck coils work in my car? I know I have a lot of questions but thanks for any info and help.
Last edited by N2Ojunky; Mar 2, 2014 at 11:07 PM.
LQ9 came in Escalades, Silverado SS and GMC Denali. If you don't know the vehicle it came out of, the only way to tell the difference is to pull a spark plug and look into the chamber with the piston visible, and see if it has a dish. If its a flat top piston, its an LQ9. There aren't any external differences between an LQ4/9.
Springs will depend on the cam you choose and should be matched accordingly. Once you install the cam, youll need to measure for correct pushrod length. Even if you find, after measuring, that stock pushrods will work, I wouldn't use them. Get a decent set of hardened pushrods, its cheap insurance.
Yes the truck coils will work, all you'll have to do is bend the fuel rail connection line out of the way about a half inch towards the rear.
The only other thing you'll need to do is drill and tap the accessory bracket hole on the front drivers side of the block. Takes about 10 minutes.
Springs will depend on the cam you choose and should be matched accordingly. Once you install the cam, youll need to measure for correct pushrod length. Even if you find, after measuring, that stock pushrods will work, I wouldn't use them. Get a decent set of hardened pushrods, its cheap insurance.
Yes the truck coils will work, all you'll have to do is bend the fuel rail connection line out of the way about a half inch towards the rear.
The only other thing you'll need to do is drill and tap the accessory bracket hole on the front drivers side of the block. Takes about 10 minutes.
