351 FLYWHEEL QUESTIONS
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351 FLYWHEEL QUESTIONS
What kind of balance should an 84 351 windsor flywheel have? i've searched on this alot but no definate answer. I have a flywheel that came with it but it looks identical to the flywheel i took of my 82 300. will they interchange?
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The 351W is externally balanced. There should be a counterweight cast into the flywheel just inside of the ring gear on the side facing the engine.
The 300 is internally balanced and has no counterweight. The flywheels are not interchangeable.
The 300 is internally balanced and has no counterweight. The flywheels are not interchangeable.
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The flywheel that came off the motor doesn't even have a weight on it. It does have some balancing holes drilled in it and the casting number for both flywheels is from the 60's. Could these holes be taking place of the weight?
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No, the 351 will have a block (weight) welded on it, the 300 has no block.
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Elder User
Joined: Nov 2004
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If it is a factory flywheel, it is not welded on, it is cast in as part of the flywheel. I was looking for a decent picture online, but could not find one that was linkable to the forum. Go to ebay and search for item # 170391910528 and look at the picture.
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