12/29/2022 0 Comments Sbc numbers on front of block![]() ![]() It is a very sloppy fit the engine will be positioned too low and can easily move around causing clutch chatter and driveline vibration.This article will cover the majority of Dodge, Chrysler, and Plymouth V8 engines from 1958 through 1993. The problem with this is the early mount will fit the later interlock frame bracket. 307 and 327 engines continued to use the old design. For sb '69 Camaros Chevy only used the new mount/brackets with 302 and 350 engines, deemed most likely to need them. The "interlock" mount was narrower and thicker than the previous design necessitating re-designed frame brackets. The recall involved the band-aid fix of a cable/bracket assembly attached to the exhaust manifold and looped around the upper control arm shaft.įor '69 Chevy re-designed the mount with an integral hook to prevent physical separation of the parts if the rubber/metal bond failed. The car would continue accelerating even after releasing pressure on the fuel pedal.This caused several serious accidents. When the mount failed, under acceleration the engine would lift off the bracket, often causing the accelerator linkage to bind. ![]() One of the first and largest auto recalls back in the '60s was caused by failure of the LH motor mount in 8 cylinder '65-'68 Chevrolet passenger cars. It is a 2 bolt main block - as were all 327 engines built by Chevy. ![]() The 327 in my '69 RS is a 386 block, assembled at the Flint engine plant on 11/22/68. Had to be some additional manual labor hours there. However, someone had to keep up with and make sure that the 2 bolt main blocks went where they were supposed to go and likewise for the 4 bolt main blocks. Although one could argue additional machining time to bore and drill the extra holes, this doesn't make sense to me either in that I suspect that all of those drill and tapping machining steps were all automated and done at the same time. One would have thought the block would have been machined the same for all builds (302, 327, or 350 usage) and simply change the internals as required to build the correct displacement. What always boggled my mind about this is that building both 2 bolt and 4 bolt engines out of the same block had to have created additional part and inventory control issues for Chevrolet / GM with regard to usage. Same casting - 2 bolt main variant as opposed to the 4 bolt main used for the higher hp engines. ![]()
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