![]() ![]() But even with a 76 cc chamber you will still be running close to 10 :1 with an iron head (93 octane only). ![]() With the exception of the steam holes these are identical heads with right facing stairs cast in the front of the head. If you are running flat tops, you will need a 76 cc head such as the '993 (has steam holes from factory for the 400), or the '71 Z/28 head number 3973487. ![]() It is at the upper limit on lift for a set of Vortec heads, which I would recommend over the '882 Power Pack 76 cc heads (hopefully you are not running flat top pistons, if so the 56 cc Vortecs would put you in detonation with pump gas). It makes power with low (pump gas) compression and doesn't need a high gear (especially with a SBC 400) for street manners. This cam works with stock exhaust (as in using mufflers like most people instead of running uncapped), and has a lot of midrange torque because of it's narrow LSA. This is a hydraulic flat tappet cam (part number 12-208-2) with a split pattern (more exhaust lift and duration) whose numbers are 211° intake / 221° exhaust duration 0.050" lift, and 0.442"/0.465" lift with a narrow LSA of 110°. I would like to recommend a CompCams grind number 265DEH. ![]()
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