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| | | Forums66 Topics128,077 Posts1,056,012 Members48,433 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Feb 2012 Posts: 11 New Guy | | New Guy Joined: Feb 2012 Posts: 11 | Hello, everybody. I am in the process of swapping out the 235 in my 1961 Apache, and I've found a small snag that I need advice on. The engine I am putting back into the truck appears to be fine, and doesn't leak a drop of oil... Until I put the bell housing, clutch assy, and transmission on it. I can't figure out why, because the transmission doesn't put any stress on the pilot bearing or the rear main seal- right? When I took the transmission back off, it quit leaking. It doesn't leak much, but a few drips a minute. I guess my main question is, do I need to replace the rear main seal, or go ahead and install the engine and see what happens? My thought is that it might not be making a seal because the engine sat for a few months. What do you guys think? Thanks in advance for your help! The new engine is a 57', not a 61'. | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | Are you 100% sure it is not transmission fluid leaking out the front of the trans?
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Sep 2011 Posts: 1,453 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 1,453 | Are you 100% sure it is not transmission fluid leaking out the front of the trans? If you can answer yes to the above question then I'd check for excess crankshaft thrust(end-play).
BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022
| | | | | Joined: Oct 2011 Posts: 206 Shop Shark | | Shop Shark Joined: Oct 2011 Posts: 206 | If I had it out I'd do it anyways? Cost about 20 for. A seal and oil pan gasket, would save a headache later
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