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| Engineering/ Technical Ask technical questions about cars. Do you know how a car engine works? |
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#1
10-07-2004, 12:08 AM
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bbc 454 over revving problems
Im Re-building a 69 stingray that has no motor or trans. I have had several people tell me that a 454 is not a good motor to build because
of a over reving problem. does anyone know how to get around this problem or have any suggestions. I would love to do a 427 but I can not afford that... Last edited by badams67; 10-07-2004 at 10:31 AM. 
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#2
10-07-2004, 08:43 AM
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Re: bbc 454
If you can find a 454 block, use a 366, 396 or 427 crankshaft (all the same forging). 427 pistons are readily available. 454 heads aren't quite as desirable as 427 (oval port), but can be modified to make plenty of power with 9.5:1 compression (practical limit for 93 octane).
The 454 and 427 use essentially the same block (4.25" bore). If you can't locate the necessary parts, e-mail me. I have a few... [email protected] (Jim)
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#4
10-08-2004, 09:19 AM
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Re: bbc 454
I suppose that all depends on what you define as a "problem". A 454 with the cast iron crank is usually good to about 6,200 RPM. With the proper combination, this can make for a very powerful street/strip engine. The forged ("steel") crank is good to about 7,000 without changes, if the rest of the combination is up to it.
The 427? Well, I've seen stock 435 horse (late '60s, 3 2-bbl. carbs) rev to 7,500. Add headers and a good distributor, and 8,000 isn't out of the question. Since your car is a '69, the 427 would be more "correct". A properly prepared 454 would make the car considerably faster. What exactly do you plan to do with the car?
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