A833 390 stroker what do I need to hold 400+ hp
my output shaft has 26 splines,
Yur in trouble; that small-shaft came in the A/F bodies with slanties.
If you see one lever up and one lever down then you have a boat-anchor,as regards your stroker.
The overdrive is nice, but with a big cam, your cruise speed may put your engine into a low-efficiency rpm, and if that happens you won't save any gas money; but the reduced rpm will still be worth something, in terms of comfort.
With an upgraded clutch, Ima thinking a scattershield is in order. The CFII for instance is so grippy that my 367 used to chirp the tires going into third gear at 85 mph. That CF PP has destroyed 3 factory 340 discs so far and the fourth is vibrating again. It busts the spring-carrier and spits out the springs.
You will need 1350 yokes anyway and I doubt you can get them for that wiener-shaft; so that small-shaft has got to go. The larger shaft is a straight swap-in.
Your stroker with half-decent tires, will snap 7260 U-joints. If you have to run them; I highly recommend U-bolts on the rear yoke and a driveshaft loop up front. When you buy new joints, take them apart and wash out the assembly grease, then reassemble with black moly-grease. Make sure you check and adjust your rear pinion angle to keep the U-joints scrubbing the grease around.
If you stick with the overdrive, you gotta remember that
it is NOT a 4-speed. It is a
3plus1. Take it very very easy going into od. If you forget, then you will shatter that tiny gear, and when that happens, nobody knows where the parts will go. If they end up going between other gears, well it will make a mess in a heartbeat. I blew up three of those with my 367, only one with the CFII disc.
With a stroker,and a clutch, on the street,the thing is; you really don't need a big cam, nor a big rear gear. But the bigger the cam, the bigger the rear gear will want to be, else you end up putting the 2-3 shift rpm outtasight.
Like with 3.23s; 6000 is about 78mph with a regular A833 (1.92ratio) but is 90mph with the od-box(1.67ratio). There is no way to get that down to 60mph , except with 4.88s.... and then you have a useless first gear starter of 15.08. And a cruiser equivalent to 3.55s. I'm just saying. You can move the shift road speeds around with the gears but with the od-box it's hard to match to a big cam; that 1.67 second gear is a real tough nut to crack.
FYI;
My 367 with a 223*@.050 cam, pulled anything I threw at it right down to 2.73s. I went to 3.55s because 60 was 5100, right where the power peak was. So the zero to 60 is a lotta fun.
If you don't know it here are the ratios;
.....2.66-1.92-1.40-1.00 regular A833 1966up
3.09......1.92-1.40-1.00 64/65 Commando
3.09......... 1.67-... 1.00-.73od That 1.67 is smack-dab inbetween 1.92/140
