LS1 ● Confirmed

Pontiac · Regular Production Option

400 Ram Air IV (370 hp)

Years 1970 Models 1

Documented applications

Firebird / Trans Am →

• 1970 ● Confirmed

  SPO special-order, not regular RPO; 88 Trans Ams

This page aggregates every documented appearance of LS1 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.