Considering an I6 build

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Dec 8, 2011 | 04:16 PM

apachetech

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From: Star, Idaho

Considering an I6 build

I recently sold a stroked 400 because I thought it would be way too much motor for an early bronco and now I am considering building an I6. However, I have read a little about the 250 being a "small" six and the 300 being a "big" six and there does not seem to be much aftermarket products, i.e. aluminum heads for the 300 as compared to the 250. Would you build up a torquey 300 or go with the mods you can put on a 250? What pros and cons are there?

Dec 8, 2011 | 08:02 PM

f100jim

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If by "early" bronco mean the original bronco body, it might be tough to fit a 300 in that engine compartment. The 300 is a LONG engine. You should measure the space, then measure a 300.

I have no experience with the 250. There are a lot of great aftermarket parts for the 250. On the other hand, the aluminum head and intake are not cheap.

Dec 9, 2011 | 09:25 AM

AbandonedBronco

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From: Boise, Idaho

There were some pictures around a while back of an early Bronco with a 300 in it. The 300 had dual 4bbls if I remember right. Quite a beast.

If you want to ask someone about an early bronco with a smaller six in it, look up gfw1985.
He has a 66 with a really hopped up 200 I6 in his.

Dec 9, 2011 | 10:08 AM

Harte3

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From: Spokane, WA

FORDSIX PERFORMANCE • View forum - 240-300 "Big Block" Six Performance

That site has a ton of information on building a SB6.

Dec 9, 2011 | 10:21 AM

AbandonedBronco

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From: Boise, Idaho

Apachetech, I just realized you're only 40 miles from me.

Dec 9, 2011 | 10:37 AM

gfw1985

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From: Raphine, Virginia

The 200ci is a bolt in replacement. How much you want out of it, is directly proportional to amount of money you're willing to spend. The 250ci is a bit harder. It is a front sump oil pump and will require suspension lift and/or making your own oil pan to convert to rear sump so it clears the front differential. Also being a taller engine, body lift required for carb to clear hood unless you scoop it. The 300ci will fit and is the hardest, requiring front crossmember and core support modifications also. If economics play any factor in your decision, walk away and do a V8 conversion. It can get expensive real fast.

Dec 9, 2011 | 11:18 AM

apachetech

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From: Star, Idaho

That's cool abandoned bronco, you're right up the street! I am starting to get a feeling that it is hard to go with an I6. I wanted to do something a bit different and really like the I6. I thought it would be easy to find an I6 to start but it seems as if they are hard to find. I would go with a 200 I6 if I could find one at a resonable price. The problem I had with the 400 I built was that it seemed to be too much for an EB. I'll keep looking and if I can't find an I6, I'll go with plan B and that is a 351W based "clevor" engine. Thanks for the replies!!