Well, it all depends.
I'd say 1995 if you're strictly taking about the motors, because OBD1 is easier to mod.
But in terms of the cars themselves it has to be 1997 thanks to the SLP LT4 SS cars. Not that there's many of those cars out there but with a decent tune (GM put the LT1 tune on them, and it robbed HP) they can be LS1 killers.
I remember INTMD8 from Speed Inc bought one, dyno tuned it and it picked up like 20 hp. I think it was 308rwhp after he was done or something?
I'd say 1995 if you're strictly taking about the motors, because OBD1 is easier to mod.
But in terms of the cars themselves it has to be 1997 thanks to the SLP LT4 SS cars. Not that there's many of those cars out there but with a decent tune (GM put the LT1 tune on them, and it robbed HP) they can be LS1 killers.
I remember INTMD8 from Speed Inc bought one, dyno tuned it and it picked up like 20 hp. I think it was 308rwhp after he was done or something?