ok, my cuz crashed his escalade and the insurance let him keep it cheap. He let me have the 6.2 complete. I want to install this on my 09 but need to swap out the heads to the GenIII style cause of the intake runners. I have ported 241's that were banched and flowed 295 at a 600 lift. Now, with a stock MLS GM head gasket what would be my compression? I will also be installing LS7 lifters and Zr1 camshaft..

P.S. I have a Roush TVS1900, thous the reason for needing to swap the heads. Would love to keep the l92's..lol..

 

I would advise a set of 243 or 799. Do not put 241 heads on there.

 

243's,

 

stock 243 flow less than these ported 241's...Im not going to spend 400 bucks for heads that will flow less..Come on guys just need to know if im going to be ok as far as compression

 

Using a CR Calculator that is easy to find with a search online, I get:

241 - 10.9 CR

243/799 - 11.2 CR

317 - 10.3-10.4 Cr depending on where the CC size comes from

These are assuming stock .051 gasket with .010 out of the hole.

 

those stock L92 heads flow.... 330 @ .600 lift from the factory!!! find a new style intake and leave the stock heads on it!!! .... now I know you have the SC......... but you should beable to find a lower intake for that blower to match the L92's

and if you have to go with the old style head then the Lq9 head will drop your compression a bit over the Ls6/LS2 head I believe

 

since yu have the parts go ahead and use them. youll be fine, if that blower makes decent power youll be fine