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Old 05-27-2008, 07:27 AM
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10 degree locks are better, however the springs look stronger on the 10 degree lock head. Could be springs for a roller cam and that could flatten your flat tappet cam. 7 degree locks are enough for your combo. Check the seat and at 0.500" lift spring force.

yes, 210 will be a little less responsive at low rpm compared to the smaller port heads, but with a 3.90 gear, 2800 stall, and 400 cid, it should not be a problem

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