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Labor Day Putting down your wrenches or time for MORE wrenching? 
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| | | Forums66 Topics128,018 Posts1,055,261 Members48,417 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Mar 2009 Posts: 18 New Guy | | New Guy Joined: Mar 2009 Posts: 18 | Okay, I did something stupid. I have the head off my '54 235 getting it worked on. While it is off I have been fixing leaks with the motor in the truck. It was leaking from the front timing cover and the rear main seal. I removed the timing cover, the oil pan, and loosened the main bearings to lower the crank to get a new seal in. Tonight I was looking at the timing gears and noticed that I had lowered the crank low enough to disengage the gears. I noticed the one small dot on the crank gear, but the only mark I notice on the cam gear is a rather large round dot in a valley of the cam gear. Is this the correct mark? As is said, I have the head off and can find TDC on the #1 cylinder easy enough. I also have the lifter cover off. Can anyone give me a good idea of how to line everything up if these marks are not the right ones. Also, I have a sneaky pete and am getting ready to put in the rope rear main seal. The previous owner had the neoprene type in and I am assuming this is why it was leaking. I have read some threads that say to lube the top seal with vasaline before attempting. Other say don't lube it. I don't have the crank down very far in the rear. Should I lube it before I try or not? Any other advice on getting the top seal in would be appreciated. Thanks
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