Prob true, but hunting for 800hp and quicker spool, big cubes and the 9180 would be my choice, after seeing my 8374 proform on the RB30 with BP98WMI wouldn't be needed with E85, and I suspect the 8374 on E85 would be sufficient for that power and happily outs pool the 2860s.
if I can keep the front diff, that may well be viable. LS builds are quite cheap in comparison to most other builds here in the US and you can get quite a bit out of a supercharged 5.7 liter!I'd go V8 for sure. The chevy LS engines are so well supported in the USA, you'd end up with a better result AND an easier build. I bet it would be cheaper too.
As others have said, if you can get what you want from larger capacity and a single turbo that's got to be the simplest approach.And so my thoughts have gone again towards the Group B solution - compound charging. And it does make me wonder why it hasn't been done (or done more often). I want to run a bigger single, one in the 800bhp range, but remembering how much 2860-5s can lag, I'd like to see if something can be done about that.
So the straightforward idea is to stick a Rotrex supercharger where the power steering pump is, and feed that directly into the intake of a T04z, T88, or whatever the latest and greatest single turbo is these days (never did keep track of the single turbo model numbers). An Eaton blower would develop boost quicker, but a Rotrex would be easier to plumb.
Hi,celica st205 I did with a GT40 and a mercedes / eaton M62 (with electric clutch)