food for thought. that NV4500 did give mpgs in my truck with a 235/75/15 tire 3.21 gear about the same as 29x9.50x15 3-55 gear. I would have to drop to 4th with 3.23 on a good up hill grade but 3.55 would walk up it in 5th while accelerating and gaining speed, idle through some thick sand beds and never spin a tire. I really did like that part of the NV4500 but never run my 3.91sg behind it. I can see it fitting the bill with the correct tire size.... when I removed it for the 727auto I could not get in the sand what so ever with the 3.55 locker it would just spin down fast unlike the granny gear 5 speed. I could spin it up with the granny gear and it would dig ruts and move right along let off throttle and the tires would pop right up on top of the sand and idle on.

what I did not like was trying to shift it fast. shift like butter but a might slow for racing it around on the street. about the best thing was the off the line hole shot with it and once in 3rd standing on the throttle it would haul the mail. on the interstate it would fly open road and would do 80-90 all the way all day.

this morning on the way to work I was thinking about a B-body a833 4 speed 3.23 or 3.91 and the pro/cons of it over the NV4500. after all a lot of Mopar legends were HP- B-body cars @ #4000 or more or a C-body with 4 speed??

6pac 440
a833
3.91sg 4.10sg 4.11sg 5.13sg
14" poly glass tires

#4000 + B-body

I always thought that as weird with the 14" wheels 26" tall tire and that low of gearing. but remember how they would smoke the tires through 3 gears like nothing and fly on the topend in a 1/4 mile. so my thinking is keep all those stock set ups in mind setting it up this time for a daily drive. only sorta fast.

so I come up with something close and was going for that same cam choice.
222@.050
a833 4 speed
3.23- 255/60/15 26" tall on 10" rim

it will see more traffic than off-road so this is more street truck friendly for crazing and can always pop in those 3.91s to rev things up some.

I do know for sure how well the 650DP worked on the 360headed 318/727/3.23 with the 5.2 whiplash roller cam. I was taxing it pretty hard. and now I am here building another one.

but the 650 spredbore Holley is a vac carb and I have added the QFT adjustable vac pod to it and is ready to go. best thing is all the stock 85 truck PTK linkage will fit with that spredbore Holley & Street dom intake if I stay 727auto