I have the XE268H in my 360 with 3.55 gears and the A833OD 4spd. The 360 has a measured 10.6:1 compression. I have run a best of 13.7 @ 102 with a very traction limited 2.2 sec. 60' time. Just sorting out the traction issues off the line should get the car down into the low 13's. This time was also accomplished with a smallish 600 cfm carb.
