Just an FYI for you, I talked to Joe at Leftcost32 extensively the other day about this and he said for a DD, these TVS1900 love compression! Just look at Bills truck. Joe puts them (the Maggie's of course)on a lot of GTO's and TBSS's with LS2 and 3's that are around 11 to 1 and they love it! Tune them right, he likes small pulley's and tunes them to about 580rwhp and they make awesome DD's. My next FI motor will be a 10+ comp motor with about 10-12 psi for a DD and will be a blast!

 

That is good to hear since im trying to decide how much compression I want with my 1900 and 408 stroker.

 

When you decide let me know, kinda interested in this too.

 

This is a relief and exciting. Thinks for the info. Who would I talk to that has experience with a tune like this for a DD?

I was thinking about buying HPT and a O2 with my tax money, but I would need someone to give me a starter tune cause I don't know ****.

-DOA

 

I have a tvs1900 on my LS2 trailblazer. It definitely runs great and does like the higher compression. I swapped to a smaller pulley last fall and really haven't had any issues with knock or detonation. I'll be watching how it responds in the Texas summer heat.

 

I think Dusty (wilderacing) built a HC 370 that he ran 15-16 psi through it. He also tunes for people, might wanna give him a shout.

 

What kind of boost #'s do you end up with on a smaller pulley on top of that 6.0?

The way I figure the OP's static compression (assuming stock head gasket and short block) will be in the 10.6-10.7:1 range. I don't know the first thing about an FI engine so I couldn't tell you if that is good or not.

 

Could anyone explain why Supercharger's love high CR whereas turbos do not? How is 10psi from a SC different than 10psi from a turbo? Thanks.

 

There isnt that much of a difference. A similiar turbo will spool faster on a higher CR than a lower one.

 

Do the ebay TVS chargers fit on the new 6.2 liters?