just wondering what the GT35R .82Ar average spool up rpm and full boost rpm on a LD9??
I would guess that it wouldn't hit full spool until 4200-4500 (on maybe 25-30 PSI).
Fetter or JMarks would know (both running tube header). Full spool (0 vacuum 0 boost) probably around 3800 or so. I'm running a 3076r .62ar exhaust and tube header,full spool @ 2800. 15psi @ 3850...
"The FACTS are always subject to CHANGE once the TRUTH is applied"
"In the entire history of man the only stupid questions are the ones that don't get asked"
my 06 cobalt 2.2 with gt3582 journal bearing turbo spools at ~4500 rpm.
We are running a .62 housing and we get 17 psi around 4000-4500.