tuned port injection
The 1989 Camaro didn't have a 350 TPI (not stock, anyway)
according to chevymania it means it is a 170hp tpi L-05 350 out of a truck.
The eight digit in the VIN # will tell you what engine you have. If you have the number 8 it is a 5.7 (350)
yes
Yes.
No. Its engine code is LT1. The intake has much shorter runners than the tpi induction system.
Depends on whether you're referring to a 305 TBI, 305 TPI, 350 TPI...
TBI or TPI? 305 or 350?
NO!
yes
Some magazine articles of the day list times as follows.. Car Craft : 1989 IROC Z 305 TPI..15.3 sec. @ 94.7 m.p.h. Car Craft : 1989 IROC Z 1LE 305 TPI..14.70 sec. @ 93.01 m.p.h. Hot Rod : 1987 IROC Z 350 TPI..14.66 sec. @ 96.24 m.p.h. Hot Rod : 1990 IROC Z 350 TPI..14.77 sec. @ 97.7 m.p.h. Motor Trend : 1990 IROC Z 350 TPI..14.4 sec. @ 97.8 m.p.h. Motor Trend : 1988 IROC Z convertible 305 TPI..15.79 @ 89.3 m.ph. Muscle Car Review : 1990 IROC Z 305 TPI..15.1 @ 91.5 m.p.h. Muscle Car Review : 1990 IROC Z 350 TPI..14.8 @ 93.4 m.p.h.
165 HP for LG4 carb 305. 190 HP for LB9 TPI 305 220 HP for L98 TPI 350