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« on: June 15, 2023, 02:14:11 PM »
I’ll concur with all the above when saying “heads”. Mine been a Day 2 L-30 since I first got it. Although I blueprinted the bottom end & added forged slugs, most of the gains came from the deck & above. I cut into a pair of 462’s. The chambers were cc’d, ports cleaned, matched and bowl work done. I went with titanium race flow valves, bigger springs, screw in studs, guide plates. I used a Z intake, minus the plenum, again ported and matched to the heads. On top of that is a 1” spacer & a 780 Holley. This all works sitting on a zero deck block, as cast it was way out of spec. Camshaft, critical….I’ve run a bunch. Currently running a hyd roller along with roller tip rockers ( fit under stock covers) .
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