Vibration

Just got the balancer and the flex plate. All cylinders are firing, no miss.

 

There's a stamp on the block, and it's wired like a 351. It is an 85 block.

 

I think the offset balance weights are on the center part an not on the outer ring. I could be wrong but if I'm right the outer ring just does the dampening and if it spun the only consequence will be the timing marks will not be right. I could definitely be wrong though.

 

Just for ha ha's use a 302 firing order and see what happens!

 

I don't think it will run like that. not really sure what's going on with that motor but ifnit were mine I would try a different 50oz balancer and flywheel before tearing the engine apart to see what's wrong with it. It isn't a stroker bottom end is it? Could be mis-matched pistons/ rods / crank, etc.

 

Did, it would not run. Spitting through the carb and back firing.

 

Didn't get alot of info from the guy in N. Carolina when I bought it. He just stated that the motor and tranny had less than 5000 miles on them.

 

Reach out to him if you still have his contact info.

 

You've got it wrong. The counterweight is the outer ring.

 

The block doesn't care what firing order it uses. The camshaft determines the firing order. Among the 302 roller cams, the HO, F4TE and the Cobra GT40 cam use the 351 firing order. The base roller cam uses the older F/O