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Replace a rear main seal in a 350?

In: Chevy Blazer, Chevy Silverado [Edit categories]

Answer:

NEED TO KNOW THE YEAR. Some years had the 2-piece seal and some had the 1-piece seal.
All engines after 1986 give are take a month have the 1-piece seal and you must remove the engine are the transmission to replace the seal. OIL
Pan does not need to come off.

If it is older then a 86 then you will have to remove the oil pan and the oil pump and rear main cap on the crankshaft to replace the seal. Either way BIG JOB.

First answer by Neutz. Last edit by Neutz. Contributor trust: 135 [recommend contributor ]. Question popularity: 2 [recommend question].

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