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[Kelly Rosato]

Hey guys, trying to figure a few things out here. I'm building a shop car as kind of a rolling display of technology. Its a 1977 Volvo with a 1998 3.8 from a Firebird.

I'm going to use a stock Volvo intercooler and a TA49 turbo. Any input on what a SAFE amount of intercooled boost would be?? I was thinking about 8 - 9lbs initially.

[Arctc Wolf]

no more than 9-10 psi intercooled. if u look at the race-prepped blocks that intense racing produces u can run more boost. they come w/ forged rotating assemblies and a few other things, and ZZPerformance has stage 4 cylinder heads that will help out too.

[Kelly Rosato]

<blockquote>quote:</font><hr>Originally posted by Arctc Wolf:
no more than 9-10 psi intercooled..<hr></blockquote>

Good. I was aiming at starting at 10psi, so maybe I'll start at 8 and go up a little from there.

<blockquote>quote:</font><hr> if u look at the race-prepped blocks that intense racing produces u can run more boost. they come w/ forged rotating assemblies and a few other things, and ZZPerformance has stage 4 cylinder heads that will help out too.<hr></blockquote>

I might pick up a 3.8 just to make a monster out of. Studded heads and main caps, forged rods & pistons etc.. I asked over in advanced tech if anyone thought on Series II casting was a better donor for porting, but no one answered. How far back are 3.8 Series II heads interchangable?

[ January 06, 2003: Message edited by: Kelly Rosato ]</p>

[Pike]

Kelly,

The Series II heads from 3.8 from 96 on the L36 engine are interchangeable. You can also use the heads from an L67 engine which is just a beefier supercharged version or our L36 (found in the GTP Grand Prix). Basically any modern day OBD-II 3.8 from GM production lines is going to work.

The heads from the old school 3.8 turbo buick WILL NOT work. It's different motor.

[Kelly Rosato]

<blockquote>quote:</font><hr>Originally posted by Pike:
The Series II heads from 3.8 from 96 on the L36 engine are interchangeable. You can also use the heads from an L67 engine which is just a beefier supercharged version of our L36 (found in the GTP Grand Prix). Basically any modern day OBD-II 3.8 from GM production lines is going to work.

The heads from the old school 3.8 turbo buick WILL NOT work. It's different motor.<hr></blockquote>

Well, I kinda knew that the old engine/heads were a wash. My main question was if there were any castings that were 'more' desirable than others. I found several L67 cores from cars with engine fires and I may just buy one of those to rebuild. That way I get the long block with heads to port, and the lower compression forged pistons and forged rods. Heck maybe even a core Eaton thats worth a few buck to someone.

[ January 07, 2003: Message edited by: Kelly Rosato ]</p>