390 Project - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
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post #1 of 2 (permalink) Old 12-08-08, 09:01 AM Thread Starter
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390 Project

I am new to the forum. I have been into fords for some time now, but I am new to the big blocks. Looking for some advice.

Just purchased a Fairlane Thunderbolt clone project that came with a disassembled 390. The seller claims that the block is a hi-po block which has the high nickle content. The block has a big X in the lifter valley which he says makes it a service block. How can I determine exactly what this block is?

The 390 is in pieces and has had all the machine work done to it. I am planning on taking the block to my local machine shop and have it checked out to make sure everything was done properly. The block was bored 60 over so I am going to have them sonic check on it. Also going to have them check the line bore. I will be using ARP bolts for the main caps. Is there anything else that I should have checked, or any mods that I should have done to the block while it is at the maching shop?

The crank the came with the purchase is a standard crank. He told me that he had it checked and it still is within specs. I am going to take this into the machine shop and have it checked again and polished. Anything else I should have done to the crank?

The rods he claims were reconditioned, but they do not appear to have been shot peened. They are currently attached to a new set of flat tops that came with the purchase. I will have the machine shop recondition the rods and have ARP bolts added. Anything else I should have done with the rods?

Also included is a Edlebrock Performer intake manifold. A freshly machined set of heads came with the project. I am wanting to build this motor so I have a fast street car and also have a mean sounding idle. Any suggestions on a cam kit that will give me a nice heavy lope at idle and will also have good midrange performance up to the 6000 rpm. I am planning on running a manual 4 speed on this setup.

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post #2 of 2 (permalink) Old 12-15-08, 07:23 PM
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Re: 390 Project

You can't beat the 390 GT cam. It has a nice mild loopey idle. Allot of people over-cam the FE's. A couple of 2.5" Flowmasters turned down right in front of the rear. She'll talk.

Last edited by tbird100636; 12-22-08 at 06:10 PM. Reason: Minor spelling correction
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