Ultimate A-500

Thanks for the info. Maybe I should clarify exactly where I am in all of this. My running/driving 74 Duster has an 360 with stock bottom end, presumably stock 1.88 valved heads, an unknown cam (not stock for sure), Edelbrock Performer 318/360 intake (used it cause it will allow the AC compressor to bolt in no problem) and a 670 Street avenger carb. I currently have an A-998 Trans that I need to fix some things on when I have time (Bad leak from shifter shaft, shift overlap on 1/2 shift, but I have another thread on that) and a 3.23 geared 8 1/4" SG rear end. I currently run 245/60-15 rear tires but intend to go to 275/60-15s.

I just picked up the A-500 on Friday, so the plan is to live with the A-998 until the snow flies, then get the A-500 in there over winter. I asked what needed to be done to make it live happily behind a 400 hp 360 because that is where I intend to get to with this car, not where I am now. For rear end gearing, I will be installing the 8 3/4 I have soon too, so the rear gear is not yet defined. I have a 3.23 open 489 case for it but won’t use that as is, it will get different gears and a SG (somewhere between 3.91 to 4.56 with the consideration that this will be a cruiser, not a drag car)

I appreciate the comments, both regarding the transmission and the total package as that will come in handy soon too. I am not sure if I will do the transmission rebuild myself (Never done one) but the suggestion to Have fun and do it right "ONCE" really makes sense to me. I’ll definitely check out TCS for the torque convertor since it will save me cross border shipping hassles.

Any other info is greatly appreciated too. @transman any suggestion as to where to buy the rebuild parts if I do tackle this myself?

Cley