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Thats it - im putting in a 390! /forums/images/icons/smile.gif

Heres what i have to do:

Convert my 68 390 from a 289/C4 back to a 390/C6

I know i need motor mounts, C6 auto trans and the S code engine itself.

Several questions:

I will be blindly buying all the parts so:

1) is the 390 "S" code block unique or would any 390 block do? How can an "S" code 390 block be identified?

2) the auto transmission - C6: again, is it unique to certain engines or are they universal, and how to ID one?

3) HOW MUCH would i expect to pay for these in need of rebuild?

also, could any expert on this be willing to help me out during my buying process? Someone who can tell me what questions to ask... etc and make sure im buying the correct parts! Seeing as how i've never seen a 390 in person, and wont until what i buy arrives on my doorstep!

Thanks,

Gary
 

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You will need GT heads (special bolt pattern) GT exhaust manifolds (specific to Mustangs) 4V intake . I have access to all these parts + a couple of 390 blocks 1 complete 1 bare but machined I hope you can find some where you live. Gary
 
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