Opinions
Post Fiend
Joined: Jun 2001
Posts: 5,228
Likes: 5
From: Running Springs CA
There is a cheap oil seal that fails on those early GM automatics, at least the PG and Dynaflow. The PG in my '57 leaks, too, but works flawlessly. The reason the PG worked fine with only two speeds is that those older engines had gobs of torque low down, not like the higher revving engines of today. The Turboglide had no forward gears, just multiple turbine stages, like the Dynaflow. Keep the 348/PG unless it is going to be a daily driver.
IF you can find someone with experience on those cast iron Powerglides, pay for a seal job, not a complete rebuild. That used to be a common repair. It cost me $75 for a '65 Impala, but that was decades ago.
Jim
IF you can find someone with experience on those cast iron Powerglides, pay for a seal job, not a complete rebuild. That used to be a common repair. It cost me $75 for a '65 Impala, but that was decades ago.
Jim
Postmaster
Joined: Nov 2004
Posts: 2,511
Likes: 0
From: Marion, VA
Originally Posted by jimandmandy
There is a cheap oil seal that fails on those early GM automatics, at least the PG and Dynaflow. The PG in my '57 leaks, too, but works flawlessly. The reason the PG worked fine with only two speeds is that those older engines had gobs of torque low down, not like the higher revving engines of today. The Turboglide had no forward gears, just multiple turbine stages, like the Dynaflow. Keep the 348/PG unless it is going to be a daily driver.
IF you can find someone with experience on those cast iron Powerglides, pay for a seal job, not a complete rebuild. That used to be a common repair. It cost me $75 for a '65 Impala, but that was decades ago.
Jim
IF you can find someone with experience on those cast iron Powerglides, pay for a seal job, not a complete rebuild. That used to be a common repair. It cost me $75 for a '65 Impala, but that was decades ago.
Jim
Lead Driver
Joined: Apr 2002
Posts: 7,746
Likes: 7
From: Tampa Bay, FL USA
I, too, would try to keep the Powerglide in the car, if only to maintain its value. PGs are pretty reliable, and still work well in plenty of old Chevies. If you absolutely MUST swap it out, what about a THM400, from a late 60s- early 70's GM B/C body car? Those things are totally bullet-proof, but I don't know what it would take to bolt it up to the 348.
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