1977 — Buick changed to an “even-fire” offset-pin crankshaft to smooth out the V6 engine.

1978 — Turbocharged version of the 3.8L V6 offered in the Buick Regal and LeSabre.

1979 — The engine gained some horsepower with improved cylinder heads (larger valves and ports).

1980 — Larger 4.1L version of 3.8L engine offered with bigger 3.965” pistons.

1981 — Stronger connecting rods and a revised harmonic balancer and flywheel were added.

1982 — 180 hp version of the turbocharged 3.8L V6 offered in Regal T-Types and Grand National. Also, a smaller displacement 3.0L version of the 3.8L V6 with a shorter stroke crankshaft was built for GM FWD cars.

1984 — Direct fire distributorless ignition and electronic multiport fuel injection were added. Also a new camshaft with a larger base circle and 0.015” shorter pushrods were added. This was also the first year for a front-wheel drive (FWD) version of the 3.8L V6.