428 Flywheel Issue, internally or externally balanced??

[jetblue69]

First q... Can you contact the guy you bought it from?

If not, it looks like there's a counterweight bolted to the back of the damper or is that the backside of the damper? Can you get an inspection mirror and verify?

Or... contact Johnson's Machine like it says on the invoice and ask them. Most balancers keep electronic records.

We can go from there...

[bill37341]

Either the motor was zero balanced, or it was balanced with a 428 flywheel. You weren't provided one? Even with a zero balanced motor, the flywheel needs to be part of it. Surely the seller knows. Good luck, Bill.

[saltshaker]

There were 2 differrnt 428's ... passsnger nlock and yhe SCJ which was ballanced with a external weight on the crank behind the balancer. The only way to know is to find out which crank the motor has. Pass crank's are 1U or 1UB and are internally balanced. Pull the pan to find iut what u have...
Jon

[DanEC]

Originally Posted by saltshaker

Pass crank's are 1U or 1UB and are internally balanced. Pull the pan to find iut what u have...
Jon

Again no expert - but I think saltshaker misspoke in this response. Pass 428 cranks would be factory externally balanced I believe (not internally).

[saltshaker]

I would go to the Ford fe forum or contact Survival motors, Brent ...craft Racing these shops build FE motors all the time
Jon

[Blaine Sellie]

Originally Posted by jetblue69

First q... Can you contact the guy you bought it from?

If not, it looks like there's a counterweight bolted to the back of the damper or is that the backside of the damper? Can you get an inspection mirror and verify?

Or... contact Johnson's Machine like it says on the invoice and ask them. Most balancers keep electronic records.

We can go from there...

The seller is long gone, perhaps I can try Johnson machine and see what they have for records. I had fingers crossed that something noted on the block, or in the paperwork would give clues to this mystery........thanks.