Crane Cam question
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Crane Cam question
I am looking for a stock 1971 302 profile, but cannot find. If they do not have the exact profile, of which I have conflicting data for what that truly is, then I was looking at H-260-2. I am going for stock on this build. If anyone has either the true Ford 1971 cam profile, please share (I looked and found conflicting data on posts). And if anyone knows the Crane cam which fits it, or possibly another mfg for the stock profile. On that note, I am only looking for US made cam companies. I have always been partial to Crane, with Isky also being in there. Thank you in advance.
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Joined: Mar 2011
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From: Taxachusetts
Here's a couple:
Stock replacement cams: FMC #C3AZ-6250-V.....Howards Cams, #217311-09
Melling #SYB-25
Stock 289/302 cam specs:
Duration - 184/189 @ 0.5"....Ford's idea of duration was just as the lifter started up the ramp, so take that into consideration..
Lobe lift - 0.230/0.238
Gross lift (@ valve) - 0.368/0.380
Centerline - 114/104
Intake Opens/Close -16*-20* BTDC / 70* ABDCExhaust Opens/Close - 44* BBDC / 20*-24* ATDC
LSA - 109
Rocker ratio - 1.6
Stock replacement cams: FMC #C3AZ-6250-V.....Howards Cams, #217311-09
Melling #SYB-25
Stock 289/302 cam specs:
Duration - 184/189 @ 0.5"....Ford's idea of duration was just as the lifter started up the ramp, so take that into consideration..
Lobe lift - 0.230/0.238
Gross lift (@ valve) - 0.368/0.380
Centerline - 114/104
Intake Opens/Close -16*-20* BTDC / 70* ABDCExhaust Opens/Close - 44* BBDC / 20*-24* ATDC
LSA - 109
Rocker ratio - 1.6
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