With that combo, I highly recommend not,NOT, to run the wide ratio904. The rpm drops are quite deep. Further more with 3.73s your speed at 6500rpm will be 53 with the 2.45 tranny and 47.6 with the 2.74 unit. Both units will force a shift.
In tell you what tho, 3.55s and 28s will get you 60 at 6575 with 5% slip, and no shift, with the 245 low tranny.
Anyway, with the 2.74 outshifting at 47.6mph(6500rpm), the Rs will drop to 3650.Check your dyno chart and see how much power you now have compared to peak.
It's even worse on the 2-3 shift.
If you need more TM, use a bigger rear gear, or a higher stall.
I think those little rollers are gonna embarrass you.
Waitaminute
Something does not compute
post #1 says;
574 cam 1.6 rockers, .298 duration @.50 .236
-dynod at 484HP, 490ft/lbs, half filled block
-roller cam, hyd lifters
How does a roller cam go from 298*advertised to 236* @.050?
