th350 to 700r4 85 gmc stepside 1500

[85gmcstepside]

Hey guys I'm buildin a 85 gmc stepside sierra just as a weekend cruiser I'm currently building a mild 350 ( about 375 hp 410 tq) has a th350 trans and 3.73 gears. Wanting to know how hard it is to switch out the trans to a 700r4 and what year I need to get? I know I'm getting it rebuilt with vette servos and a stall converter and high energy bands and clutches. Also if I need to change out the rear end gears since I will have over drive I want to run around 2000 2500 rpm at 75mph and my cam is suited for 1500 to 5000rpm. Any advice is greatly appreciated I've been workin on cars since I was 10 but I'm only 24 and dad always said shut up and listen to your elders they've prolly forgotten more than you know so I'm all ears guys. Again thanks ;D

[Pontiac1976]

I believe that was a topic on here should be on here. check the trans info . You need 700R4 trans mount 84-88 case, TV cable,your drive shaft will work . There should be some links on the info too.