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Registered
Join Date: Dec 2011
Location: Westchester, NY
Posts: 1,826
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Well the 77 911 had the 2.7 and the 78 was the first year of the SC which had the 3.0. The early SC's did not have a lambda feedback system which I think came out in 80 so my guess is that they are all different because the 77 is for the 2.7L engine the 78-79 is for the non lambda SC's and the 80-83 is for the Lambda SC's then 84 and up would be the EFI 3.2 Carrera's which is a whole other system.
Regards
Dave
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'78 911SC Targa (Back In Action!)
'00 996 Carrera (New kid on the block)
'87 944 (college DD - SOLD)
'88 924s (high school DD - Gone to a better home)
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