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...






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"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.