[WANTED] 340 rear main seal cap

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HD539

HD539

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Looking for a rear main seal cap for my 1971 340 duster. One of the bolt holes for the oil pump is cracked on mine.

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I can’t help with sourcing the cap but if you do the block will need to be lined bored and honed with the new cap. Not cheap. You be miles ahead if you can find someone to repair your original cap without warping, if possible. Good luck.

Edit. If you do replace it, a 318 cap will work. Pretty sure they are the same as 340 for the rear main.
 
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