STANDARD SINGLE exhaust size?? Trivial question.

[Innuendo]

I'll double check when close to info but I think at least the dual system engine pipes were 2", and stepped down at the mufflers. The original cars I've looked at looked to be the same size pipes onto the manifolds as my Prem.

I'm referencing the tailpipes. Which is what Agro and his mate are betting over.

2" is 100% correct for HZ but I'll stick with the tailpipes on LH/HQ/HJ Holden V8 being somewhat smaller than 2" and likely 1 3/4" or 1 7/8" as I remember them looking really silly and thin.

[agr071]

So we were both wrong, bugger.
Looking at the 2" system that Byron posted, that's what I had on my ute and originally wanted on the van. But won't fit because of the shift linkages.
Having said that, I would still do a single, but in 2 1/4" to help it breathe a little better. Also will have 2 hot dog mufflers on it.

[HK1837]

I'm referencing the tailpipes. Which is what Agro and his mate are betting over.

2" is 100% correct for HZ but I'll stick with the tailpipes on LH/HQ/HJ Holden V8 being somewhat smaller than 2" and likely 1 3/4" or 1 7/8" as I remember them looking really silly and thin.

As per previous post, HQ dual system tailpipes were 2". Single system tailpipes 1.75". LH dual system tailpipes 1 5/8".