G'day all,

Yes I agree Gadge but the converter above looks like a Model L Impco converter the maximum rating of this
converter is 200 Hp ,I see people using this type of setup on a motor that would have 300 Hp running on petrol
so no amount of tuning is going to give you that lost 100 Hp ,I've been down that road and paid for dyno tuning
and it's a waste of money when you don't have the correct sized gas system to start with ,that's why I've seen
so many people remove the gas system from their vehicle.

The maximum CFM of the 300A Mixer is 432 and I would usually use a LPG carby that was 30 percent bigger
than what you would use running on petrol.

I would also doubt that air filter could flow enough CFM ,from memory I think the
standard filter flows 295 CFM.

Most formulas will tell you 600 to about 610 CFM for a 6000 RPM 350 engine on petrol.

A lot of the early Impco setups were good for fuel economy but lost a lot of horse power.

Cheers
Max.