Broken 4L80E Transmission

[Frank Grasha]

Well after a closer inspection and conversations w trans people seems the major overheat damage was caused by the 19 mi tow with driveshaft still connected. The overrun cluches , overdrive planetary, overrun sprag and frt clutch piston/drum, Frt pump bushings spun out ,were damaged from towing the burnt clutch plates were from original fluid loss 500 mi ago. I was hopeing to make it back home to do tear down as i have a better selection of tools and equipment  But as usual Fate had other ideas , After another $900.00 worth of parts & Tools / fluid parts cleaners etc I am Home And trans is once again working flawlessly Avg MPG from  Allegheny Valley to Valley forge was 10.2 MPG @ 60 MPH  Love 4 speeds w lockup   FI not so much i can only pull 11 in of vacuume , Quadrajet would pull 16 in  And had a lot more ommph! Though rings only have 1000 mi on them they may improve as they wear in   Frank

[Frank Grasha]

Re: Driveshaft explanbation was it was a short tow ??  And it was raining extremly hard at time of pickup ??  The Quadrajet primary barrells are smaller than the FI . If you can drive without ever opening the secondarys It is probably the best carb ever built Though very hard to set up properly . I still have to do some checking because wile warming up the exaust smells very rich now . But with so many other problems there has been no time for tweeking  I was able to do the repairs properly just had to duplicate a lot of stuff ! Frank