Has any one used one of these? If so do they realy work I'm thinking of 2 on a dart tunnel ram.

i have one on my 540 it has 4holes and they do work we dyno my motor

did you dyno it with it on and with it off?

A hvh super sucker carb spacer was worth 12 horsepower on my 540.

1050 dominator carb.
Edelbrock victor manifold.

Chris

I got almost 20 on my 509's. Yes they do work!

Dave

We've had nothing but success with them, GREAT product. http://www.cpperformance.com/detail.aspx?ID=3354

Wonder how much HP over a 1" open spacer as i have on mine now. Assuming you guys are talking about gaining over a carb with no spacer.

How you doing man, did you ever sell those 32 labbed props i tried last summer.

dennis we try 4 kindthe 4hole one cp sell work the best i was amaze how cold the side of the spacer was it was as cold as a ice cube it really works it wroth the money for the hp you get . now that was on a single plane dart intake!!!if you have a dual plane intake you migth not want to go with the 4 hole one we only tested single plane

Wasn't really in the market to sell them. Just helping you out! They are my fastest props...

As for the HVH, I compared it to the 1/2" phonolic spacers that were on my HP 500's stock. That is where we saw a 20+ hp gain.

As bajabob says, you won't believe how cold these things get when you run hard. It is not unusual to see them sweat.


Dave