Thread: Big port heads
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Craig 930 RS Craig 930 RS is offline
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Join Date: Sep 2003
Location: Kirkland, WA
Posts: 10,190
Comparing the exact same build on the same dyno of 2 other 930s - my car had approx 20 more HP with the early SC heads.

930 heads are just too small of port - the old tech turbochargers *required* high velocities and thus the small port/runner sizes.

ANY hi-po rebuild really should have these. and the relative cost is not that much - you'll be rebuilding the heads anyway
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 04-01-2008, 09:54 AM
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