RobsVette04

Does the LS7 need a tune after the heads are worked on/fixed?

Thanks in advance.

vertC6

No only if they were milled a significant amount

Unreal

What he said. Only if milling is enough to warrant a change in timing tables for the added compression.

EdsC6Z06

I wouldn't worry if you just swapped the heads or had them rebuilt. I'm in the process of "fixing" mine, but also doing a cam and headers so a tune is in order. Looking forward to no more valve worries and maybe a few more horses.

jwebsta32

Mine are milled .010 and I am getting a tune, only because I want to.

RobsVette04

Thanks for the information.

JoesC5

I installed aftermarket PRC265 heads(no milling, stock compression ratio) and I had to have the tune adjusted because of the difference in airflow

If stock heads are rebuilt but not ported or milled, then a tune should not be necessary.

Unreal

Even then porting doesn't make a big enough difference in most cases. The maf sensor can read any additional airflow and add fuel.

SMFCPACFP

What a stupid question.

vbu2c5

The only stupid questions are the ones that don't get asked, believe that.

RobsVette04

Thanks, but the guy is trying to troll.

He did ask a stupid (IMO) question about how to turn off the seat-belt indicator in his C7Z.

Anyone who is too "cool" for a seat-belt is a dumbass in my opinion.

Thanks for the support though.

stefuel

There's no such thing as a stupid question. But, let me tell you about some replies I've heard to reasonable questions

Kouasupra

LMAO!!!

I totally agreed. There is no such thing as a stupid question.

vbu2c5

No worries, I work in the chemical process industry and "there are no stupid questions" was one of the first things I was taught out there. Could be the difference between life and death. It definitely applies to your engine too!

Racingswh

I tune for everything. For me I just want to know that everything is working properly and tuned as it should be. It's purely curiosity and peace of mind for me. I know that's not the answer to the question of whether or not you "have to" but if I just had the heads done I would have it tuned without ever considering calling it good without tuning.