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390 punched .060 over? 390 punched .060 over?
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  #1 (permalink)  
Old 04-22-2004, 12:51 PM
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Default 390 punched .060 over?
I will be going up to Carlisle this weekend to look for a 390, and drool on any cobra I see, of course. Any way, if I find one, I will most likely be punching .060 over and stroking it. This may sound like a dumb question, but, when I punch it .060 over will I have to get larger pistons or just piston rings, or nothing at all? I will end up putting forged pistons, forged rods, and a 428 crank in it most likely. Any help on this will be of a great help to me. One more question, what kind of power can I expect with an Edelbrock top end?
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Old 04-22-2004, 01:07 PM
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Take your time there hot rod! First I don't think 60 over on a 390 is generally recommended. But to answer your question, you will need all new every thing.
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Old 04-22-2004, 02:39 PM
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Ya might wanna do a little more researching before you order some parts....Your piston question scares me...

450hp is do-able with a good set of heads and intake....
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Old 04-22-2004, 03:42 PM
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A 390 at .060 over is not a real good idea. They tend to run warm when punched out that much. I would not recommend going over .040....

390 blocks are not real hard to get. Where are you located? I know several sources for rebuildable 390s...

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Old 04-22-2004, 04:32 PM
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Im located near Gettysburg PA, which is close to the MD-PA border.
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Old 04-23-2004, 03:25 PM
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Default 390+
I have a few 390's, a couple are bored +40 and + 60. Also have a couple of cobras and one of them is nearly complete. They both have 390s. I am in Lancaster, not too far from you . If your interested give me a call at 717 495 4210.
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Old 04-26-2004, 07:22 PM
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Default 390 +60
LwCwb

My Fe was a 390 out of a 1966 T-Bird. My engine is .060 over with no real problems noticed and thousand of miles driven. Engine heating was only a problem on hot summer days in bumper to bumper traffic. Replacing my 9 inch pusher fans with 10 inch units has relieved the situation. My understanding is that many 390's can easily take a .060 overbore but some cannot due to bore-centering manufacturing differences.

I'm in the Harrisburg area so give me a call to discuss or stop in to see the car.

Geary Sarno
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Old 04-28-2004, 03:13 AM
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I have decided to begin my search for a 391 FE truck block to do my build up on. Do any of you know where I will be able to find one? I will call to wrecking yards to see what I find tonight. Are these engines hard to find?
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Old 05-02-2004, 08:51 AM
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Did You locate a block yet? I think I have one . Give me a call 717 495 4510
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Old 05-02-2004, 08:58 AM
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sorry, I caught that I had posted the wrong # , It is 495 4210
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