Hot Rod Forum banner


  1. New-be.....Powerglide transmission

    Transmission - Rearend
    Hello I'm a new-be to this site :welcome: and I joined cause I need some information on a transmission my late husband has left me. It is a powerglide aluminum transmission and it measures 28 +/- length and 18+/- width with a number 3987988 followed by a circle with a "CM" at top and a 4 at...
  2. Transmission question

    Transmission - Rearend
    I recently bought a engine and transmission for my project car. I was wondering if my 1965 powerglide bolt pattern would line up with the new thm 350s and 400s. Thanks in regards for anyone that can help me out.
  3. Transmission cooler for powerglide

    Transmission - Rearend
    I just bought a B&M 70255 trans cooler for my powerglide trans and installed a new rad minus trans cooler. The B&M says it works best in series with OEM rad cooler. Am I at risk for not using the rad cooler as this thing seems pretty small. Anyone got any experience with this? Btw if I am...
  4. Neutral concern

    Transmission - Rearend
    I noticed today that my car is difficult to push when put in neutral, it is a 2 speed aluminum powerglide. Fluid level looks fine, I put in Mobil ATF D/M fluid at the start of the season. Does anyone think it could be wrong fluid? Or something with the rear end post unit?
  5. Powerglide Questions

    Transmission - Rearend
    Alright, so I sold my Camaro and bought a 1969 Impala. It has the matching numbers 327 and Powerglide still in it. What I want to know is what the best shift kit is, and what speedometer gear to use, as I put bigger tires on it. I don't have the rear end code as of right now, but the VIN is...
  6. No reverse or neutral

    Transmission - Rearend
    I am in need of some help. I have a cast iron power glide build date march of 1955. I know very little about this transmission. I have installed it in a dragster of mine, but I only have a forward gear no matter what position I try to shift it into. I have no reverse or neutral.
  7. Powerglide transmissions

    Transmission - Rearend
    I recently picked up two powerglides for $150 total, first was that a good deal? both are in working order and one appears to have been recently rebuilt. The guy said one is from a 65 nova and the other is from a 72 nova, as i was looking them over i noticed the 72 (one that looked rebuilt) has...
  8. Flippin a gear

    Transmission - Rearend
    I heard if you flip the ring gear on a powerglide gear box - you can then use it for a reverse rotation set up! Anyone have experience with such things? Building a mid engine car using a corvair drive train engine facing forward. - Stop laughing :)