340 rear main cap

Have it spray welded and fixed at a machine shop. Replacing the cap would mean tearing the engine completely down to line bore it.

Remember if spray welding it, The shop should have a small block mopar block there to have it bolted to and torqued when welding the is being done. It should be torqued to a block then heated prior to welding. They will have to resurface the oil pump surface. We already spray welded lifter bores back in race engines. Just did a 440 with the water pump housing surface broke off . Most machine shops Spray weld. That is the correct way to fix it right.