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Old 11-10-2004, 06:08 AM
Clois Harlan's Avatar
Clois Harlan Clois Harlan is offline
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Join Date: Dec 2000
Location: Broken Arrow. OK ( South Tulsa), USA, OK
Cobra Make, Engine: 66 COBRA FE 427 /4SP. (HCS Coupe w/ 408 Stroker and TKO 600 -sold)
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Hey Paul,

I have ran a 428 bored .060 over and I had all sorts of problems, primarily heat. I have a friend that is very happy with his 390 PI engine and it has plenty of power in his Cobra.

Unless you intend to race your engine I would either find a true 428 CJ or find a good 390 that can be bored out to .030 over and use most of the parts you have. I am not a fan of overboring an engine.

Someone help me here, isn't a 390 block that uses a 428 crank a 410 cu in engine that was used by Mercury's racing teams in NASCAR during the early 70's? I would think a good 390 might be much easier and cheaper to find in Europe than a 428.

Good Luck with what ever you decide to do! Keep us posted.
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Last edited by Clois Harlan; 11-10-2004 at 06:14 AM..
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