Re: need 4.3 info for engine swap
Hello. The 4.3 came out in RWD cars(mid 80s) and light trucks with a 4V carb, then in 87 it recieved TBI fuel injection(160HP/230ftlbs). 92 was the first year of CPMI as an option, thus upping HP to 180. Then the Vortech engines in 96 upped HP to 195 and continue to this day. The last TBI enigne was installed in 1995. OBD II began in late 95 I believe.
For transmissions, the TH700R4 was the auto until 92 when the electronic 4L60E was offered. Manuals were the NV3500 5 speed just like the 4.3 powered 1/2
tons. Transfer cases were the NP231 with 2.72:1 low range which is a pretty beffy unit, and the push-button Selec-Trac (cant remember the name on it)
Tahoe and High Sierra trucks have the bucket seats w/console, and IMHO the 94 ups have the best seats, I prefer the split bench. Good Luck.
Nice to see another 4.3 powered vehicle!
1989 GMC S-15 4x4 4.3L/700R-4, 3.08s, 31" Sport Kings For Sale
1985 S-10 4x4 Soon to have 3504BM/TH350/D44/14FF, 35" Boggers