I vote for keeping the 6 as well. The 235 has plenty of power, the speed problem is more gearing than anything. Put in an overdrive or change the diff gearing, you'll pick up some top end.
I'm running the 235 in mine, it has no problems keeping up with highway traffic in overdrive. I have 3.90 rearend gears and .70:1 overdrive ratio. Most of the time, I don't even need to stomp it into kickdown to pass.
BTW, you would need a different bellhousing to swap to a V8.

Last edited by LONGBOX55; 01/04/2012 4:45 AM.

Bill Burmeister