351M rocker arms
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.. Yes, that cam already shows good lifts... that same cam in a SBChevy with stock 1.5 rocker arms would spec. out at much lower lifts...
.. As BearTracks hinted at, rocker fulcrum shims may be needed or changed to get proper hydraulic lifter preload...
.. If you're not satisfied with the performance of your 351M with that cam, it's prolly because the compression ratio is too low and that's difficult to fix with available off-the-shelf 351M pistons, hence why everyone converts 351M's to 400's...
.. As BearTracks hinted at, rocker fulcrum shims may be needed or changed to get proper hydraulic lifter preload...
.. If you're not satisfied with the performance of your 351M with that cam, it's prolly because the compression ratio is too low and that's difficult to fix with available off-the-shelf 351M pistons, hence why everyone converts 351M's to 400's...
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Torque1st
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
22
10-24-2007 02:03 AM
fozzy
1973 - 1979 F-100 & Larger F-Series Trucks
6
09-08-2001 10:47 PM