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Old 08-10-2017, 04:54 PM
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dcdoug dcdoug is offline
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Join Date: Apr 2009
Location: Bethesda, MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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More bad news on the engine front. The machine shop found a hairline crack in the original 427 crank and while it may be repairable, I don't want to go that route. So I can add a new crank to go with my new pistons. I do plan to reuse the Lemans rods.

I am leaning towards going with a Scat forged 428 crank and picking up some displacement. Since 427's are internally balanced and 428's aren't, how does that work with a 428 crank and allow the engine to remain internally balanced?

And that probably means I should do a cam upgrade. Any thoughts? My current cam is a Holman Moody vintage B style grind (specs below):

Exhaust Duration = 242
Intake Duration = 242
Intake Center Line = 105
Exhaust Center Line = 107
Lobe Separation Angle = 106
Cam installed w/ key 2 deg advanced (I think)
Gross lift = .526
Overlap at .050 = 30 deg
Rocker ratio: 1.76
Cam card is here if you want to see it: http://www.clubcobra.com/forums/pict...pictureid=2787

I will probably try to stay with Holman Moody since I have their lifters and push rods too and I know manufacturers don't like mixing brands.

My heads are stock iron medium risers and I'm not changing those.
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