The 6.0 head swap is getting a set of cylinder heads from a 6.0 liter pickup truck, they are aluminum like the LS1 head, but have the same intake and exhaust ports as the LS6 Z06 heads, but you can pick em up for like $300 bucks compared to the LS6 head will cost you around 1200. The drop your compression ratio to 9.3:1 but you can have the heads shaved down to bring the compression back up. My question is where can I go to get this done? I also want to know what the right compression ratio is or how much I should shave them. lastly, does anyone know where I can get these heads?

 

Machine shop, preferably a racing oneDepends on alot of things.... if this is a strictly street motor, you'd typically aim for low-mid 10s. Your qualified machine shop will work with you to get them into that range if possible.Junkyard

Those heads won't fit a third gen, unless it has a LS1 type motor in it.

 

I am getting an ls1. what are these heads called? or at least what car/motor are they on so I can how how to find them
thanks

 

They come in trucks.

 

Does LA mean you're in Los Angeles or Louisiana?

If you're in the Los Angeles area, I can recommend a good machine shop in the area that handles a lot of racing orders. He's an expert with GM engines.

 

it does stand for Los Angeles, I just fixed it. Actually I am new to LA, so any shops you could suggest would be great, I still don't completely know my way around. do you know of a few good junkyards too, one where I might be able to find these heads fo instance? do you recommend any mechanics( I am looking into an ls1, manual 6 speed tranny and rearend swap)? thanks

 

The 6.0 heads you are looking for come in the 2000 and up Chevy/GMC 2500's. Don't mess with the 99 and early 2000 heads. they are cast iron. Patriot performance remanufactures the 6.0 heads with updated parts as well.

 

davcamaro, you've got a PM with some answers. Hope they help.

 

GTAMATT,

I have a 99 silverado with a 5.3. They have the STOCK 082 ALUMINUM heads with a CI block.

 

Yep, the 4.8's and 5.3's came with aluminum heads in 99. The 6.0's came with cast iron.

 

I didnt know they had the 6.0's in 99'. I thought all that was availible was the:

262ci 4.3l
294ci 4.8l
325ci 5.3l

I thought the 362ci 6.0l came out on 00' model Denali's.

 

In late 99 they came out with the updated 2500 with the 6.0. They switched to aluminum heads mid to late 2000. The really good 6.0 heads are on the Escalades though.