[Steve C.]

Skip- Holley Street dominator intake (modified by Dave Bischopp) with same 1/2" spacer and HP950 carb was 401hp at 4000 and 589 hp at 5600 rpm compared to the 493 hp & 566 hp with the Torker II intake. Both had peak torque at about 4500/4600 rpm with 576 ft.lbs on the Torker II and 589 ft.'bs with the HSD intake. Performer Rpm intake had the same 589 ft.lbs. at a lower 4400 peak rpm.

[gearbanger]

Steve, what are you saying? Are you saying the torquer made 92 more hp at 4000 rpm?
And the torquer made less hp at 5600 rpm?

[Steve C.]

Sorry if I made any typo errors, here it is again...

Torker II
4000 rpm 398 hp
5700 rpm 566 hp

HSD
4000 rpm 401 hp
5600 rpm 589 hp

Performer RPM
4000 rpm 423 hp
5800 rpm 580 hp

Victor
4000 rpm 402 hp
6000 rpm 600 hp

All intakes tested with a 1/2" open carb spacer and the same HP950 carb.
And all intakes port matched to my heads except the Torker II

[Skip Fix]

Since my T2 was more opened up and stayed with the Holley, so probably could be better numbers than the one Steve tested.

Most dual planes I have flowed had different numbers for upper and lower plenums on almost every cylinder. The larger plenums and runners on an RPM over a stock intake might be a little better but I've seen 5% difference between upper and lower runners.