What heads are good for a 390ci turbo motor
#25
#26
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Also mentioned at higher boost levels. 900-1000 to the wheels seems to be when people start pushing water with the stock castings and no orings. I made an assumption in thinking that he would actually want to go there with a 390 and a 91mm. Guess that's kind of a stretch these days.
#30
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Dont need a flame suit ls6 is a proven intake lol.! To the op either way u go u are gonna pay. I ran those patriot stg3 heads on my reamount car and the highest hp I got was 813 hp 780 tq. I used them out the box with the springs and epp cam. I also ran 18 psi with meth and push no water. I had head studs and mls gaskest with copper spray. I did the same style of racing u are into. Its all in the tune imho. But to be on the safe side thicker deck heads or double oringing is a must in the 1.2 k range.
#34
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I've always been under the impression l92s are weak at the deck?
I'm saving my $$ for a set of afr heads..
Like mentioned before the fast 102 isn't going to net you any considerable gains over other intakes in a boosted app, plus some people have issues with the intake leaking..
I'm saving my $$ for a set of afr heads..
Like mentioned before the fast 102 isn't going to net you any considerable gains over other intakes in a boosted app, plus some people have issues with the intake leaking..
#36
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The idea that the FAST is worth nothing on a boosted application is COMPLETELY wrong. At 15 psi, it'll gain twice as much as it would gain NA. Can you throw an LS6 on and make the same power by turning up the boost a little? Sure but at the same boost level, the FAST could make 50-60 more rwhp. The bigger the cubes, the more you will benefit from the FAST.