No, the 1991 Formula 350 came with TPI (Tuned Port Injection) rated at 240 hp from the factory. It came with automatic 700R4. No 5 speed manual transmission was offered with a 350cc because it would have beat the flagship "Corvette" LT1 came with 1992-1996 Corvette or 1993-1997 Camaro Z28, Trans Am, Formula models. With that in mind anyone can remove the original engine and drop an LT1 along with computer and wiring to the 1991 Firebird Formula.
Chevy 350 LT1
5.7L Chevy 5.7L LT1
will a mid 80s 305v8 fit in a 1993 firebird that had a lt1 in it
93-95, 275 hp - 96-97, 285 hp
lt1 is a 350
The 1994 LT1 makes 275HP, while the 1995 LT1 makes 285HP stock.
275HP LS1 ENGINS HAVE 320 HP THAT PERSON IS WRONG 320
A 1997 Pontiac Firebird WS6 has the LT1 350 V8 inside. With the WS6 package, it was rated at 305HP. Without the WS6 package, it was rated at 285HP.
first of all you can tell by your vin number and plus formulas where set with lt1 305's No 350's and just pop the hood should read sfi 5.7 liter on the engine and if it wasn't painted the formula should have formula painted on rear bumper plus base formula and ta have different taillights. That and instrument cluster should read 165 and not 125
it came with a newly designed 350 lt1 300 hp cam driven water pump with a opti-spark ignition
All 1993 Pontiac Trans Ams were made with the LT1 engine.
It will fit right in there if you know what you are doing. But you will have to add a computer, fuel pump and some wiring harness to make that engine run.