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Old 10-21-2005, 03:45 PM
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Chevy - BB vs SB

I'm wanting to build an engine to race.

I'm leaning toward the BB 427 4 bolt main/blown/roller cam/lifters, etc...

Can anyone tell me why I would want a 427 over a 454 or does it really matter?

Other than finding a 427 that isn't already decked out.....

Thanks

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Old 10-21-2005, 03:51 PM
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If your going for all out racing, Id go with the 454. Same size, more cubes, easier to get parts for and all. HG
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Old 10-21-2005, 05:21 PM
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Ever consider one of these?

427 SBC
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Old 10-21-2005, 07:22 PM
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I would go with the 454 ther is alot more parts avaible. good luck with it.
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Old 10-21-2005, 09:22 PM
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The 454 and the 427 BBC's are the same exact thing except the crankshaft and the pistons......SO THERE IS NO PARTS ADVANTAGE..... with either one....

Aftermarket sources have plenty of both.....

What kind of racing is planned ?
Bracket or class ?

If you are going to bracket race or just do the " Run what you brung " deal.....the larger the engine....the better as a general rule.

If you are racing in a inches to weight class......I would go with the 427.

I have owned both. I had a LS-6 Chevelle....a 69 Nova SS BBC that I put a LS-6 in and so forth...

For a street race car......I prefer a 427 also.....easier to HOOK UP and turns more RPM on the big end......

Disclaimer : Street racing is frowned on by the Moderators of this site.
It was dangerous 20-30 years ago when I did it and it is even MORE dangerous now...

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Old 10-21-2005, 09:29 PM
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I still think its a lot easier to find a 454 crank. Hg
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Old 10-22-2005, 10:50 AM
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Parts are not a problem... Unless your budget/wife ;-) restricts you.

Balanced 4340 Rotating Assembly's $1899.00-$2049.00
BBC1 BB CHEVY Eagle 461, 468, 489, 496, 518, or 525ci
BBC2 BB CHEVY Eagle 509 or 540
BBC3 BB Chevy Eagle 572, 580, 588 or 598ci

http://www.gofaststuff.com/kits.html

Internally Balanced Cranks $679.00
BBC 4340 EAGLE Forged Steel Cranks 3.76, 4.0, 4.25 or 4.5

http://www.gofaststuff.com/cranks.html

My budget/wife restricted me to a gofaststuff cast crank kit for my SBC 388 LOL!
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Old 10-22-2005, 12:32 PM
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If you can afford it, World Produtcs has a 600hp 454 Small Block. You'd have the cubes and lots of power all in a convenient small block package. If I had $12,000 I'd get myself one.
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Old 10-24-2005, 08:32 AM
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$12,000 for 600hp? Sounds a little expensive to me. I have a stock 402BB chevy that is to receive AFR heads and a solid roller cam that should make 643hp @6500 and I'll have about $5000 tied up in it all said and done. How is that not a better deal?
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Old 10-24-2005, 10:02 AM
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didn't we already have 2 or 3 of these threads? i know 1 of them was a pole. i think it was by k-formula

J
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