Thread: S/O or ?
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Old 10-29-2011, 07:11 PM
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FFR428 FFR428 is offline
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Join Date: Oct 2002
Location: Fairfield, CT
Cobra Make, Engine: HM-2027 / 427 SO
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Quote:
Originally Posted by FWB View Post
without knowing the bore size it could be a 390 someone added crossbolts to....
Not with the relief valve. The only 390 block that had that was the early 61 HP 390 and of course the 4.13 bore 406 that followed in 62.
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