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Old 06-08-2009, 10:39 PM
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454 Chevy Engine

Hi!

I'm new so bear with me.

I purchased a 1992 Chev 454 engine and am in the process of rebuilding. The engine was mated to an automatic tranny. I would like to go with a 4 speed.

In the Ebay sales, flywheels seem to go up to 1990 and are all externally balanced.

Is my 92 external or internally balanced? If so, does this have to be done in a shop or is the flywheel and harmonic damper designed to only go on one way?

I have a 1950 Chevy Ambulance and would like to mate the 454 to the stock 5 speed tranny. I have no idea if the transmission would handled the torque. I hate to mate them and have the tranny or rear end blow on my first time out.

thanks for any help and I'll be browsing he different posts!

Blanceman

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Old 06-08-2009, 10:59 PM
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Can't help you on the balance question, but there isn't any part of the 50 driveline capable of dealing with Big Block power. Stock 50 was maybe 100(?) horsepower straight six. Better plan on changing it all or else drive it like a Grandma to keep from destroying it.
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Old 06-09-2009, 06:47 AM
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Quote:
Originally Posted by Blanceman
Is my 92 external or internally balanced? If so, does this have to be done in a shop or is the flywheel and harmonic damper designed to only go on one way?
The engine is externally balanced, the flywheel/flexplate and damper will only fit the correct way, and do not need to be balanced separately- but should be included if you re balance the reciprocating assembly.

An example is HERE.
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Old 06-09-2009, 06:51 AM
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you're going to need to swap the rest of the drivetrain, If possible I woul djust get it from whatever car the 454 came from.
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Old 06-09-2009, 07:33 PM
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Your 92 BBC is externally balanced. I believe it has a one piece rear seal. You MUST use a flywheel and h-balancer designed for the later one piece rear seal motor. The external balance weight is different than previous 454 BBC's. If not correct you will get a pesky balance induced vibration/shake.
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