[allstar mike]

Is an A833 overdrive a good tranny 4 a "86" dodge 3/4 ton 4x4 with a 360 ,4 speed manual ? I'm looking 4 a good overdrive to go in the truck Any suggestions ?

[sha_ba_do_bang]

a 500 or 518 if you go electronic, mostly all of dodge's rear wheel drive 4 speeds are just torque flights with a overdrive added on the back

Good luck

Brendan

[Crosley]

Originally Posted by sha_ba_do_bang

a 500 or 518 if you go electronic, mostly all of dodge's rear wheel drive 4 speeds are just torque flights with a overdrive added on the back

Good luck

Brendan

well...... an A833 tranny is a manual trans.

I believe he is looking for a replacement manual tranny with over-drive in it??

The A833 was used in trucks and vans.......not sure if it would bolt in easliy or not.

[spinn]

no its not the best, but you can do some pretty good combos. i use a close ratio 833 w/ 3.23gears, and a bigblock.. here is a exerp from doug?

The OD 833 unit is good for a general purpose street car where you want good off the line (3.09 first) and great highway cruising. (.73 overdrive) I feel these OD units work best with a 3.91 rear end ratio but I bet the new 3.73 ratio offered by Randy's R&P would be a good ratio when used with the OD 4-speed.
(with the 3.73 rear end ratio: 11.53 start-off ratio, 2.72 final drive - OD)

The 3.09 - 1 to 1 final 833 is a good "street / strip" tranny for a Slant Six. Highway cruise starts to suffer with this gear box. Rear end ratio of 3.23 is about as low as I can stand on the highway. I usually run a 2.94 behind this box and put up with the somewhat "lazy" 9.08 start-off ratio that results.
(with the 3.23 rear end ratio: 9.98 start-off ratio, 3.23 final drive - 1 to 1)

The close ratio (2.66 first) tranny is not a good choice for a street slant. These are great for racers, 1/4 mile or road course. You need to run a 3.91 rear to get a 10.40 start-off ratio. (that new 3.73 ratio now offered gives a 9.94 start-off) but these low rear end ratios suck on the open road. (suck gas and "ring" your ears) The "super-close ratio" 2.47 "TA box" is even worse when it come to getting the car to move from a standing start.
Here are the start-off ratio calculations: (2.47 x 3.91 = 9.65 start-off ratio) and (2.47 x 3.55 = 8.77 . . .)
Note: as a general "rule of thumb" a 10 to 1 start-off ratio is pretty good for a "street - strip"





specs


SPLINE
1st
2nd
3rd
4th 1st 2nd 3rd 4th
Small 2.66(35) 1.91(34) 1.39(29) 1.00(24) 17 23 27 31
Small 2.47(35) 1.77(34) 1.34(29) 1.00(25) 17 23 26 30
Small (/6) 3.09(35) 1.92(32) 1.40(27) 1.00(22) 17 25 29 33
Small (1975+ /6 OD) 3.09(35) 1.67(30) .73 (18) Flipped 1.00(22)
Flipped 17 27 37 33
Large 2.65(33) 1.93(30) 1.39(26) 1.00(21) 16 20 24 27
Large 2.44(33) 1.77(30) 1.34(26) 1.00(22) 16 20 23 26
Large (Hemi Red Stripe) 2.65(33) 1.64(28) 1.19(24) 1.00(21) 16 22 26 27






link
http://www.slantsix.org/articles/4-s...fourspeed1.htm