Supercharged111
Truly Awesome
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- Aug 20, 2015
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I don't think compound boost works the same with a centrifugal, I've only ever seen it in reference to a roots or twin screw blower.
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I just read thru all that and was getting ready to type out that it really is a big waste of time for your setup. Glad you seen the light.
The Compound stuff is really oriented around Diesels that run very high boost pressures. For a gasoline engine your better off just running a single turbo and cam to match. Its not going to have that snap down low unless you get the converter perfect. But the mid and upper RPMs will be silly.
I ran the S475/83 1.0A/R T4 on a Cammed LQ4 for 200K+ miles and it was perfect. Now its on a Cammed 5.3 in another truck and working on tuning it now.
You going to the S475/96 T6 with 1.32A/R you should make you happy.
Ive never messed with BBC stuff like this just stock stuff, but it should lite off pretty good and scream on top end if you have everything setup right.
I would highly suggest running each exhaust bank to a divided side on the flange. Your going to need to be moving alot of exhaust so no point in any other way but merge at the T6 Flange.
Id also suggest running the largest wastegate possible. Start low and work it up slowly.
That’s another thing I was gonna bring up was wastegate placement, im buying the monkeyfab divided t6 flange and was wondering the best way to fit one somewhere, the flange will connect directly to manifold.
Also RDF1 I’m following your build and man that thing is turning out super nice if you have any tips I’d love to hear em. I’ve owned a turbo car but never added one to a na engine.