SA/FB engine differences
#2
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Only the 1980 12a engine has an EGR if I recall correctly, there are some minor differences (mostly with emmissions equipment). Also the later 12a's have a separate charcoal canister while the early ones have it built into the air cleaner lid.
#5
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Join Date: May 2003
Location: Springfield MO
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as far as I know the S1 engine had no gaurd on the plug holes, as the plugs are shorter (they dont fit a S2 engine I can say that for sure), the housings have three sort of dash mark equadistant around each hole, if the engine came in car form california it will most likely have the EGR ports (mine did) these engines have a solid cube ontop of the housings opposed to the I casting ontop. That is as much as I can come up with off hand, dont quote me on it but Im pretty certain its mostly correct.
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