I have a 6.0 engine and I'm wanting to bump the C/R up to 10.5-11.0 without changing the crank and rods due to my budget. I know I can mill the heads to help some , but I dont want to run in to piston to valve problems because I'm planning on using a TSP MS3 cam. I know I change the pistons, who would make the best ones for my application? Any help will be greatly appreciated.

 

If you have an LQ9, you might try a set of LS6 heads... The LQ9 and the LS6 have similar ports, but the LQ9 is a 72cc chamber, while the LS6 has a 64cc chamber.

If you have the LQ4, I don't have much advice other than to swap the pistons. I would not suggest milling more than .030 off the heads.

 

4.8L heads have a 58cc chamber thats what im running
comp ratio is 11.5

 

I have an LQ4 and I just bought a set of # 317 casting heads because one of mine was damaged. I might just have to save up and get a stroker kit. Would the 4.8 heads the 6.0 block?