Ls 6.0???

[Rod P]

great info

[im4u2nvss]

Beware of the "early" iron head LQ4. The early ones have a longer crank with no spacer. Depending on your transmission choice, this may not be a problem. LS1 t56 would be a no go. On the later model 6.0 you would just remove the crank spacer.

[tubbed69]

Rick I did not know we're anything but ls engines for these cars,you will be satisfied if you do get a 6.0 or 6.2,good luck and show us some updates.

[ADiCarlo]

I purchased a LQ9 with LS3 heads and a upgraded cam. It was used as a test mule for Hot Rod magazine to test the increased power of different cams.

The last configuration made 530 on the dyno but the piston to valve clearance was really close. Most guys running these numbers will throw in dished pistons to compensate.

I think ultimately it depends how far your going to go with the motor and how custom you want to get. If you want something to throw in and drive an aluminum LS is a easy win. But if your going to stroke it, run high compression, boost it, I would go with the iron block because it can take a better beating.

Also FYI the iron to aluminum LS is approximately 80lbs more which is not alot when you look at the safety of running iron to aluminum.

-Armand

[Rick D]

Wow great info thanks to all that replied

Not looking to boost it well not to start just looking to keep the cost down. Really want to come up with my plan see how much it will hurt the budget and then go from there.

As for the motor I just want freshen it up and of corse get the most out of it. It's a street car so I'm not all that concerned about the 80lb difference, I'm sure the iron block setup is about the same as a SBC, or close.

As for which one I think I'll look for an lq9 as it would make alittle more power with the right cam, heads, and intake?

Here's another question, I want to run the carb intake, maybe even start with a carb? I was thinking to run a set of L92 heads as they seem to be a real good lower cost option and make nice power?

I guess what I'm asking is what would a good setup be for the lq9? Carb, cam, heads, and intake?? I may run EFI later but for now to keep the cost in line I thought a carb setup would better on the budget?? Maybe I'm wrong in my thinking???

[NvrDun71]

If you are already thinking Lq9 with an LS3 head swap, skip a step and pick up a LY6 6.0. As they already come with the square port heads and have valve reliefs from the factory for increased PTV clearance with bigger cams. Best bang for the buck out there IMO. Hit up Pat G over on ls1tech for a custom cam spec for your intended application, One of the best in the business and will get you headed in the right direction.

[ma73z]

Rick, as a guy building a 2nd gen with a carbed 6.0. I'd say you're not going to save much money going the carb route, by the time you get all the parts your going to spend about the same amount as EFI, you also won't run into hood clearance problems . Just my opinion.