Engine Rebuild question

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Jan 21, 2007 | 08:21 PM

dirtydw66

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Engine Rebuild question

I am sure this question has probably been asked a ton of times in this forum so sorry to repeat it once again. I am rebuilding a 1976 ford f-150 that had the 360 in it. My plan was going with a 390 crank, the question is : can the bore on the 390 be machined to the 427 bore size or is there some key structural differences between the two? If it cannot, how much power really can be obtained out of the 390. What type of heads, intake and cam would be most influencial in performance. Appreciate the help in advance. Thanks
Dennis

Jan 21, 2007 | 08:39 PM

monsterbaby

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Joined: Dec 2003

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From: iowa

Welcome to FTE Dennis, lets get this thread into a forum were you can get some good answers from some of our really knowledgeable FE guys.
Good luck and enjoy the site.

Jan 21, 2007 | 10:31 PM

Hypoid

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Joined: Apr 2004

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From: Golden, CO

Quote:

Originally Posted by dirtydw66

the question is : can the bore on the 390 be machined to the 427 bore size ?
Dennis

Welcome aboard Dennis!

I'll take the easy question: No the 390 block can't be bored to the 427 size. Your '76 probably has a reverse image 105 cast in the front driver side just under the head. The general consensus is that these can take an .080 overbore, but a sonic map is the best way to see how much meat is really there: Measure twice and cut once.

As for the rest of the questions, that pretty much depends on how deep your pockets are. Look at some of the other threads here to get an idea of what you want from the finished build. I'll throw a few links in to get you started.

RapidRuss' latest think-through:https://www.ford-trucks.com/forums/5...-cj-build.html

1975Ford's build: https://www.ford-trucks.com/forums/5...questions.html

jseim44's start: https://www.ford-trucks.com/forums/5...390-build.html

That's just the stuff on the first page, have fun!