Its a 400 SBC with 6-71 blower.
I just fitted a new crankshaft, while it was apart I had the rotating stuff balanced.
The company doing the balancing work did not inspire confidence.
Now its all back together, I'm convinced its way out of balance. Engine runs nicely, but terrible vibration, not so much at tickover, more as revs increase.
Big dilemma - do i pull it all apart again and send off to a trustworthy company to check balancing?
or could there be something I have missed.
Its crunch time, but I dont wanna make wrong decision.
Really would love someone to see it, hear it, and give your opinion.
I'm happy to pay for your fuel / time etc.
Thanks for reading