11-30-2009, 03:25 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
You can't rely on casting numbers -- the only way to tell a 390 from a 428 is to take off a piece of the engine and peek inside. Actually, you can't tell a side oiler from a 390 in our cars because you can't see under the car to find the cross-bolts without jacking it up (much less to see the side galley) and it's too hard to use a mirror. A 390 with the extra webbing that can be bored out nicely and is stroked to 445 is just as good as my 428CJ that is bored out to 447 cubes. I have a shorter stroke for faster revs (and a slower piston speed), but that's mostly bogus.  |
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