Senior Tech Team
Join Date: Sep 2008
Location: Smiths Station, Alabama
Re: 700R4 for a 1970 Chevelle
always heard to buy one from a 91-up but am sure if you have a quality builder the '86 should be no problem. mine came from a '91 camaro. may want to make sure and get a mechanical speedo drive tail housing (mine came from a truck sans the camaro bosses) for it if it is going in an old car. also get the male plug end from the camaro that plugs in to the trans if you can. that little bugger can be hard to find. I put one in my 67ss this past year and love it. so far it is living just fine behind my 600hp/627 ft-lb 496. I had a real good local builder that used some good parts. from memory - beast h/d sunshell, corvette servo, kevlar bands and stacked clutches. he also recommended a lokar tv kickdown. I use a pheonix trans carb geometry adapter on the 850 dp. you are correct - shorten driveshaft about 3" (measure first) and relocate the crossmember. for lockup I use a dual switch brake light and run only one wire hot to the lockup solenoid thru the switch. I went to the monster transmission website for some great info before I began..I run 3.42 rear gear with 26" tall bfg tires = 70 mph = 2200 rpm...hope this helps...