buddy of mine got one
i think its a gimmick

dynos mean absolutly 0 to me
its what it runs at the track
all that matters

I run a Wilson 1" 4 hole taper spacer on my 408. For sure I gained 1" between the carb and manifold

I see a lot of folks running the 1" spacers...anyone using the 2" spacers? I have been considering a 2" to go on my Air-gap.

I didn't really get a good test this weekend. I'll try it again next weekend. I messed with the float level when I changed the spacer and the car bogged after launch really bad. So I returned everything back since 1st round was coming. Plus the wind was rediculous so I doubt 5-10 HP would have been noticeable with 50 MPH wind gusts.

69dart can you please exp. played with the flaots ...i did some work to my duster and it started with a bogg and would like to hear more on the flaot deal....also when you add a spacer how much jet would be needed i know most are diff. but what 1/2 sizes...sorry about asking ??? on your post but i want to go to a diff. spacer aswell got 1" open now and want to try 4 hole

I thought the floats were set too high on the front bowl so I lowered it down. But I was a dummy because the car wasn't on level ground and I messed it all up. After the bog run I parked on level ground and raised it back up (set to where fuel just trickles out of the sight plug).

The car ran 6.68 1st T/T - 6.89 bog - Went 6.71 on 6.69 for 1st Round - Then 6.73 on 6.71 for 2nd round. Wasn't real consistent but we had rediculous wind to contend with. It sprinkled just before 2nd round so she was moving around a bit. The weather was just terrible so I really wasn't too upset to pack up and head home.

had one on my hemi and it picked up over no spacer ,but then i took it off and installed a open 1" spacer and picked up my 60' 1.39 to a 1.37 i did this at the track back to back runs!! my car never 60' that good ever before so i know for a fact it was the spacer ,hey pro sport i'll lend ya my super sucker hvc ,if u want to try it !!! i think every ones car is different even if some one says" it" does'nt work i try it on mine cause it usually does !!