I am doing a Tranny swap....on an 86 Monte SS.....I am dropping out a TH350 and replacing it with a 700 4R....The only reason is because I need the overdrive....I have 3.73 gears in the rear end....what I was wondering was how many bolts are there mounting the TH350 to the engine (305)? and how is the best way to get to the Bellhousing bolts? Thanks Mike
04-03-2002 04:16 PM
Mike,there are 6 bolts. The 700r4 will just slip right in. I just replaced my 350,and got lucky. I didn't have to change the drive shaft. 350's come in 3 lengths 27 11/16,30 11/16,and 37 7/8. The 700r4 comes 28 3/4, 33 27/32,and 37 7/8.
I am using 1985 Camero 305/700r4 in my 39 Chevy coupe and they both were the 37 7/8.As for as getting to the top two bolts,I lowered the tail shat with a jack to get a little more room. Remove them first,then support the engine before removing lower four bolts.
Hope this helps.
04-04-2002 11:49 AM
Hey Bob I greatly appreciate your help...thanks....Mike
04-23-2002 10:08 PM
I had an 86 GMC w/6.2 and replaced the 700R4 with a TH350 and had to fab an adapter plate for the rear mount. used 1/4" plate cut to size and drilled holes and bolted it rite in. never had a problem. flex plate required some bridgeport work though