Big block/Small block difference
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From: Weston, Nebraska
Big block/Small block difference
I'm sorry this isn't really a Ford question but this question has always bothered me. How do they get the same cubic inch out of a SB 350 as a BB 350? Does the SB have a shorter stroke w/ a bigger bore and the BB vice versa? I'm not a Chevy buff, I've just always wondered if I had that idea right, and if so wouldn't people be searchin for the BB, it should have more lowend torque b/c of the longer stroke, that is if I'm correct.
Redneck-Cowboy
Redneck-Cowboy
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Well chevy 350's have a 4" bore and 3.48" stroke which equals 349.84857 cubic inches they rounded up to get 350.
ford 351 has a 4" bore and 3.5" stroke which equals 351.8592 cubic inches they rounded down probaly because there was already a 352FE motor.
So when you take the heads off they are realitively the same. Your right going with a big block as far as stroke and bore is the ideal way to go. ONly drawback is weight but it can offset that with power in short order so don't let it hold you back. People shoot for the 351 because they can save weight, stroke it, and still make comparable hp and tq to a BB. Plus side of the big block is it makes the same power a little more effortless, more dependable. Hope this helps, good luck with your choice
ford 351 has a 4" bore and 3.5" stroke which equals 351.8592 cubic inches they rounded down probaly because there was already a 352FE motor.
So when you take the heads off they are realitively the same. Your right going with a big block as far as stroke and bore is the ideal way to go. ONly drawback is weight but it can offset that with power in short order so don't let it hold you back. People shoot for the 351 because they can save weight, stroke it, and still make comparable hp and tq to a BB. Plus side of the big block is it makes the same power a little more effortless, more dependable. Hope this helps, good luck with your choice
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From: shepherd
yes it is just a rumor so if you are talking to somebody and they say they have a camaro with a bb350 you could ask them to prove it and they will make up some sort of excuse. fe series are big blocks
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From: Iowa
ford FE's are big blocks 332 to 428 i believe, 302, 351 are small blocks, correct me if im wrong people im not sure where the 400 falls probobaly big block
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Well now that I re read your post I realize I answered a question you didn't ask. I thought you wanted to know 350sbc to 351sbf comparison and why you should use a BB. Again sorry, I bet your read what I wrote and said to your self,"what is he talking about?"
Well if I had read your post correctly I would have agreed with the others no BBC 350. However there was a big block chevy 366 believe it or not. Later
Well if I had read your post correctly I would have agreed with the others no BBC 350. However there was a big block chevy 366 believe it or not. Later
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From: Weston, Nebraska
(To: jwtaylor) Yeah I fiqured you read it wrong, but a little more info. never hurt anybody, I got what you were sayin. I also didn't even know there was a 366 out there and yes the 400 was a SB. Anyway off the subject one of our old GMC grain trucks has a V-6 in it w/ a Rochester 1 barrel, sounds like it would be weak, but guess the cubic inch. 305 and I'm not talkin the V-8 it's a V-6 and 1 big chunk of iron it is, I think it could be classified as a big block. I've never drove the thing b/c it hasn't run since I was 5 yrs. old, but that sucker has to have a huge stroke and bore to make 305 cubic inchs. Propably almost like the 300-6 Ford only in a "V"
Redneck-Cowboy
Redneck-Cowboy
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From: Iowa
yes i know chevy makes a 366 bb because a friend of mine has one in a 1972 chevy grain truck, motor has a 4 barrell and he likes it very much so it must not of been a bad motor chevy made, but i will stick with my fords.