[Skip Fix]

A T2 with a 1/4 front x3/8" rear spacer flows enough for a 455 to push a 3750Lb car to 124mph on 320 cfm SD CNC heads!
With a TB setup and a dual plane either an open spacer or cut down the center divider some or a single plane so both banks get the fuel when it is sprayed.

[JLMounce]

Originally Posted by Skip Fix

A T2 with a 1/4 front x3/8" rear spacer flows enough for a 455 to push a 3750Lb car to 124mph on 320 cfm SD CNC heads!
With a TB setup and a dual plane either an open spacer or cut down the center divider some or a single plane so both banks get the fuel when it is sprayed.

Even with TB injection, adding the spacer to reduce the turn radius of the fuel air charge into the ports, is definitely helpful.

Unsure what kind of effect it would have on a port injected deal. Considering the air would not also be carrying the fuel mass, likely less of an issue.

[Formulajones]

I've run snipers on both dual and single plane intakes with 600+ HP combos and to be honest they function fine on either. I had no tuning issues at all.

I let the engine combo decide what intake is best, not necessarily the fuel mixer since it's still a wet flow setup.

With a 500ci Pontiac, if you aren't trying to look stock, I wouldn't even think of putting a dual plane on it. It'll make so much friggin torque down low anyway you don't need to try to enhance that part with a dual plane. I'd do a single plane and never look back.

[JLMounce]

Originally Posted by Formulajones

I've run snipers on both dual and single plane intakes with 600+ HP combos and to be honest they function fine on either. I had no tuning issues at all.

I let the engine combo decide what intake is best, not necessarily the fuel mixer since it's still a wet flow setup.

With a 500ci Pontiac, if you aren't trying to look stock, I wouldn't even think of putting a dual plane on it. It'll make so much friggin torque down low anyway you don't need to try to enhance that part with a dual plane. I'd do a single plane and never look back.

This is true.

My +0.040 455 makes gobs of torque even with the T2 on it.

Port matched T2 with a 310cfm D port made 580/600. A northwind on a 320cfm 500cid Poncho is not going to leave you wanting on torque.

[78w72]

Thanks for the replies, will pass that along to the owner of the car, sounds like the port matched northwind is the best choice for this combo.