Gearing Issues Maybe ?

[Pontiac455]

Make sure a brake isn't stuck.

 

[Pontiac455]

Reason why it asent dong it with the super six is it wouldn't get to that speed. :lol:

 

[DRIVEN]

I'll ask this a third time,

There seems to be more to your story. Engine swap and fire? What's the history? Did this start immediately after other work was done or just happen out of the blue?

 

[crazy'boutOlds]

It's not a clutch fan. The problem began after the v-6 swap. Not sure if the problem was there before the fire or not(only drove it one day before the fire).

 

[DRIVEN]

It was worth asking about. You'd be surprised how many people have thought they had transmission problems that turned out to be a loud fan. If you heat up, like when pulling a long hill, and your fan clutch engages it can sound like a downshift or just really high RPMs. That's why I asked if it had been verified with a tach. The popped out freeze plug was another clue that steered me in that direction.