He didn't ask about the springs. I would never run stock springs on anything with boost. 130~145lbs on seat, 300+ open minimum with boost and .550'' ish lift. With the big valve in those L92 heads he is going to need good springs, thats a lot more area for the boost to push on.

 

Thanks guys for the input.

 

is that 6.2 vvt?

 

It is Denali 2007 6.2

 

You might want to look at the Lingenfelter GT2-3 cam..

 

I know my suburban is........not too sure on the 6.2's but you bring up a great point that needs to be researched as well. We had a few tuning headaches with it because I didn't have a clue nor did my buddies at the shop, did the normal thing backing off timing adn the thing kept on pinging....didn't realize it had a whole other table and page going on different from vettes of course these new trucks are supposed to have some really cool features in the computers that blow everything previous away, but thats technology for ya.

 

With the heads you have none of the cams listed above would be good.

 

There are several of us on the board running the L92's with aftermarket cams. You really need to look at the flow numbers for the heads and design the cam around the flow and induction package you are running.

 

Yes it is.

I just got this email from lignenfelter

The 6.2 L engine uses a camshaft phaser assembly that will not work with our GT2-3 camshaft. You would need to change front cover, lifters if it has the cylinder deactivation, timing set and the software to change camshafts so the results would most likely not be worth the expense.

Thank you,