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Original Message
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| RE: Re: 390/391 |
| By Mike McQuesten - 10/22/2001 5:07:18 PM; IP 206.193.0.120 |
Here's a little info on the 391 FT. They generally are a heavier duty block. They generally were cast with cylinder walls like a 428, at least the one that I have was. They generally have the heavy duty main webbing with provision for cross bolted main caps, i.e., the bosses are cast.
I say generally about all of these things because I don't state anything as factual, "that's the way it was....".
The block I have is a C6ME casting. The "428" is barely visable through the middle expansion plug hole. The bosses are there for cross bolt mains but the block has to be professionally machined and align honed for this procdedure. Which I am having done. I also had the block sonic tested to make sure it would handle .030 overbore 4.13 = 4.16. It was able to take that very nicely.
Whatever you do to a 361/391 block, you must use a special bushing to run the FE distributor. I don't have the part # handy but I've put it out here before. As of last year, Ford still had the C4TE ..... not sure on that but I can get it for you if you need it.
I think a 391 is a good block to go with for HP duty. I sure hope so....I'm sinking some $ into mine. |
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