[dfoisy78]

I am currently building a 66 chevelle which will have a big block in it once completed. I have a saginaw 4 speed, however, I have always planned on using a Muncie M20 or M21 for this project. Budget restraints have got me thinking about using the Saginaw for the time being until I can scrape up the cash to buy a freshly rebuilt Muncie. I know the M20 and M21's are a much better tranny, but how well will an old Saginaw hold up with a big block? Is it even worth considering or should I just wait to get the muncie?

 

[1966_L78]

Saginaw is a pretty poor choice if you want to feel the extra power of the BB... If you don't bang gears or try hard launches, it should last quite a while...

AND, if its a fresh motor, it could cause you to break it in a little easier...

As a bonus, the Muncie should bolt right in place once you get it (assuming its the same intake/output spline, Muncie had two variations). Needs a different shifter, but thats about it...

 

[Tom's 68]

jump on that saginaw too hard and it will be spitting teeth like chicklettes

 

[69bu]

Broke 3 saginaw transmissions in a 70 nova with a 400sb.......not a real good tranny if you like to hammer on it!

 

[ssal396]

I pounded on my Saginaw for a few years before I put the M-20 in.. Held up fine, but then again, the tires I had on at the time got little to NO traction..

 

[68ssvelle]

m-22 i just sold one locked up for 250 bucks ..to trans shop.

 

[Mike Feudo]

They were a good Vega trans. I used one for years in a 3000# car with a 6 but don't even waste your time putting it into a 4000# car with a BB.