340 -727 -3000 stall- Vibration under load - Trying to find source

SLOPAR72 said

That is actually possible. The fact is you don't know the history of the build and therefore you are on a witch hunt. I hope this would not be the case but you never know.... Unless someone gets lucky this type of problem could turn into going through the complete drivetrain....

JW

Click to expand...

i agree, it could be possible, however the seller of the car did reference an known builder who went through the engine and I am making the assumption that they wouldn’t have put the wrong balancer on it.

I agree, it could be a witch hunt and I really don’t want to go through the whole drivetrain but in the end may have too.

all of this already makes me want to scrap the headers in favour of manifolds as it will make removing starters and trans inspection covers to remove the trans and try converters etc….. also in case I have to remove a motor to disassemble and have balanced etc…..

but based on it the being a pulsating vibration (in and out at the same repeatable rhythm) it is pushing me towards transmission. If it were motor wouldn’t the vibration be constant, and all the time through the whole rev range??

oh yah @oldkimmer the exhaust isn’t touching anything either.