[Lighting64]

i have a 64 mailbu with a 4:11 12 bolt the engine is a 327 hooked to a turbo 350. my buddy with a 66 chevelle 350 said a tranny with overdrive
from a 89-92 astro should bolt right in. is he right? anyone try this? i can get a tranny cheap, will be better than changing rear gears as i like the 4:11 intown driving and overdrive would be great.

 

[Steve1972]

Ron-
I think the astro van should have a 700r4 tranny, which will bolt up, but is about 3" longer than a turbo 350, so your driveshaft will need to be shortened. Does the van have a 4.3L V-6? If it does, it can be rebuilt strong enough, but in stock form, I think you might destroy it pretty fast. Do some searches on the 700r4, I'm rebuilding one right now for my chevelle, and there is lots of good information here. I think most important is to set up the TV cable to the carb, if its not adjusted right, you will burn it up.
Good Luck,
Steve

 

[Lighting64]

thanks, it is from a 4.3 v-6. never gave it a thought about burning the tranny out. i will take time and study this.:thumbsup:






they're coming to take me away, ha,ha hee,hee.

 

[buddyholly]

Yea, if it is the 4.3 it should bolt up OK. GM made some small bell housing 700's that won't bolt up to a small block. You should have it gone through or you will burn it out pretty quickly in stock form. 3-4 clutches are weak point and the stock insides need a lot of tweaks. Beast sunshell is a must, transgo shift kit and corvette servo's at a minmum along with fresh clutches. Rumor is that the 3-4 pack has fewer clutches in the v-6's but the one I took apart had a full cluch pack.
Ton of info in this form on these tranny's and plenty of people to give you tips if you need help.
Good luck