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Here is an image of the flywheel.
Is this correct or is this possibly a 454 flywheel.
I am relatively new to Corvettes, I purchased this car in the fall and the engine vibrates above 3K
I thought perhaps the previous owner had used the wrong flywheel.
I think it is most likely the clutch but as it is apart lets check it all.....
Before you just slap a 427 flywheel on it ...
Suggest In lieu of irrefutable verification from builder-machine shop...
Suggest pull heads / view crank and measure stroke to verify if crank is 427 (3.76") or 454 (4") stroke.
? Maybe they put a 454 crank in a numbers matching 427 block?
im going to Try to track down the builder.
I got the car this fall and the ending is definitely out of balance... not real noticeable under 2600 but gets bad in the upper range.
That certainly could be caused by a flywheel mismatch.
as I am not an expert on Chevy BBs. If the 454 crank was used would that make the 454 Flywheel correct?
Woukd it still be out of balance?
If if you were going to take the time to rebuild a 427..... why would you %#& it up like this.....
My thought too... Panic for a minute...... I went a re-checked the block stamp and it is the right 427.....
Are you sure? 3968512 blocks used in 69 427's were also used later, like in 70 454's. Same block right down to the casting number but not the internals.....
Last edited by CanadaGrant; 12-04-2018 at 07:34 PM.
Just to confuse things even more, have you checked the back side of your front balancer to see if there is a counterweight inside the rim? It is visible from under the engine. 427's didn't have them but 454's did. Sometimes people install the wrong balancer.
12-03-2018, 06:46 PM
Does my 427 have the right flywheel? - see image
