Tommy95
Member
Well if you have a GMH certificate why are you questioning it on here?
I have a VX II L67 Calais, it came with the V8 diff and heavy duty drive shafts, nothing special there. Been heavy is nothing special, it just costs fuel mileage. I also have a V8 exhaust system, the front half of the original exhaust matches the V8 system (at the cat converters) so this swap was rather easy so again it's not like a lot of thought was put into it, I believe it was so from the VT onwards. The factory L67 exhaust (twin into single after the diff) is somewhat marginal so with the V8 exhaust fitted it would go better than stock as the engine will rev out better.
The problem with the L67 is that when it first came out in the VS it was capable of producing more power/torque than the flagship SS with 304 motor so it is my honest opinion that Holden detuned em and fairly much from then onwards it was so. If you check out the US L67's they make more power stock than ours did for the equivalent model years.
Reason why i was asking info with how rare evaluation vehicles are, etc is just because Holden shed minimal light into the matter haha
It is pretty bullshit how NZ models literally got an ultra povo spec PCM, weird.... very weird