Quote: This is an interesting thread. I am kind of in the same boat I have an X-block and a pair of 59 degree W9 heads. Thinking of going with a 4.125 stroke and hoping the block will go 4.100, but my car is a street-strip deal and I like to run 3.73s in the car.
Put a gear in it with OD.. best of both worlds
I have looked into doing a OD unit. Looks like one would cost around 3000 dollars and add weight to my already too heavy car.
I went with the 518 which is MUCH less but does add weight... the GV is lighter with a 727 than the 518 but it is $3000 plus the drive shaft... I'm sure you can find a few places to loose the weight
