Step-1: Lubricate Camshaft and Accessories
First and foremost, make sure that the camshaft and cam bearings are clean and free of any burrs. If you’re using an aftermarket camshaft as we are here, lubricate the camshaft journals, distributor drive gear, and lobes liberally with the break-in lube provided by the manufacturer. If you intend to reuse the original cam, it should be coated with a break-in lubricant such as Comp Cams part number CCA-103 to protect it during startup. Turn the block upside down on the engine stand (this will allow you to reach down into the block) and feed the camshaft through the journals, taking care not to damage the cam bearings.
This Tech Tip is From the Full Book, HOW TO REBUILD BIG-BLOCK FORD ENGINES. For a comprehensive guide on this entire subject you can visit this link:
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Step-2: Install Camshaft Retainer Plate
With the camshaft installed in the block, coat the camshaft retainer with white grease, install the camshaft retainer plate, and then torque the bolts to 9 to 12 ft-lbs.
Rear Main Oil Seal Step by Step
Step-1: Lubricate and Align Rear Mail Oil Seal
Once you’ve removed the rear main seal from its packaging, take the time to read the instructions, which will direct you to ensure that the large portion of the lip in the seal is facing forward (toward the crankshaft journal). Check to be sure that the groove in the block where the seal resides is clean and free of burrs. Put a light coat of white grease on the seal before installation.
Step-2: Install Rear Main Oil Seal
Install one portion of the seal into the groove in the block by sliding the seal into the groove from one end. Do not leave both ends of the seal flush with the surface of the main bearing cap register. Leave one end protruding slightly from the groove as shown. Install the other portion of the seal in the main bearing cap with the opposite end protruding so that a match is made when the cap is installed. The seal is offset in this manner to avoid a potential oil leak.
Step-3: Extra Sealant
Put a thin film of RTV sealant on the face of the main bearing register as extra insurance against leaks just prior to installing the crankshaft. Note that the crankshaft in a Lima series Ford engine is a heavy piece and it may not be a bad idea to enlist the help of a friend when placing it into the block.
Step-4: Lubricate Bolts
Prior to installing the bolts holding the main caps in the block, apply a thin coating of oil to the threads and the underside of the head of each bolt to ensure an accurate torque reading.
Main Bearing Inserts
Main Bearing Caps
Written by Charles R. Morris and Republished with Permission of CarTech Inc