For comparison only;
I ran the Mopar 292/.509/108 cam for one summer on the street. I tried BOTH the Standard 2.66low A833 and the 3.09OD box, both with 3.55s. I ran it in a 367 with Alloy heads, @11.3Scr and 1.6 arms. So the cam is about the same as yours.
I didn't like either.
Forget trying to run the A833od with that combo The gears are just too far apart for a high-winding engine. The ratios are 3.09-1.67-1.00-.73od; with splits of .54-.60-.73.. that means that whatever you rev it to, on the shift the Rs will fall to those percents.
Your cam will want to be shifted at 6000, maybe a lil more with those nice heads. Therefore; on the 1-2 shift the Rs will fall to;
6000 x .54= 3240, and on the 2-3 to 3600. So then, your 340 will need some grunt down there.
Whereas the splits on the standard box are all at about .72 so;
.72 x 6000=4320 which will be close to the Torque-Peak.
You will need to gear your car pretty tight to the track.
I suggest the Commando box which has ratios of
3.09-1.92-1.40-1.00
Second gear with 3.55s and 27" tires, will get you from 53mph at 4500 to 71mph @6000.
The 3.09 first gear will help you get off the line with 3.55s, otherwise you'll be slipping the clutch quite a bit......... which is why I pulled that cam out.
Best of luck to you.
