What would I need to rebuild an auto trans? And how much would it cost, rough estimate? Could it handle this build?
Couple of options with the AOD
1. upgrade your AOD./rebuild your AOD- many guys run 350-400 hp on upgraded AOD's
2 Buy a replacement performance AOD
upgrading will be about 1/2 the price. a good trans and converter are anywhere from 2-4K ( ATI, PA performance, Freddy Brown) At a minimum things you will want to address are
1. trans cooler- get the biggest plate style cooler you can fit . It is a must
2. Valve body or shift kit- it will firm up shifts and increase performance, I am partial to a performance VB as it is plug and play and run a Silverfox VB
3. torque converter- you will want to upgrade to a performance unit with higher stall matched to your setup. Avoid B&M. I like Edge, TCI
Things you may want to consider if rebuilding or buying a new trans
1. Servo- replace the stock "B" servo with the better "A" servo
2. input shaft- stock is 2 piece lock out- weaker than 1 piece upgrade unit
3. upgrade the overdrive drum/band to 2" from 1/5"- needs the AODE/4r70w drum
4. 2/3 and 3/4 accumulators
5. upgraded clutch packs
A lot of guys put the better 4r70w internals into the AOD case.
Many parts cane be bought at bulkparts.com. Best place to start and do research is clickclickracing.com. Dan knows more about AOD's than anyone