Not clear from your post or your gallery write up, but I'm assuming that your truck has been updated with a 292 GMC engine?
The stock '47 would have been a 235, basicly the same engine as the 216 of that year.
And yes, if you can get the pan off of the COE you can replace the rear main seal. It works as long as the rear main bearing is adjusted correctly. If there is to much clearance in the rear main your still going to have a leak at the seal after a few thousand miles when the seal gets hammered in.
DG
Last edited by Denny Graham; 01/04/2011 2:28 PM.
