Have any of you here used any of these VS standard 4 hole or open carb spacers?

VELLE STATS (http://www.prestage.com/community/member+pages/1201.aspx)

MY VELLE (http://www.chevelles.com/showroom/onebadd66/DSCF0010.JPG)

I do.
During dyno testing, we tried a few combos of open and 4 hole spacers.
Best result was with the HVH 1" on a Super Victor.
BUT, the HP/TQ difference between the best and worse was really minimal.
I've drill/tapped the rear side and use it for a vacuum source for the tranny modulator valve.
If you look close, the Super Sucker is shown here...

http://www.chevelles.com/showroom/BillsCamino/540b.JPG

Thanx Bill.Was that a open or 4 hole that yieled max results? BTW Sweet motor :cool:

Originally posted by onebadd66:
Thanx Bill. Was that a open or 4 hole that yieled max results? BTW Sweet motor :cool: Thanks!
Both, I guess. The HVH is profiled from a 4 hole to an open spacer.
Also serves me as a safety plate for the Dominator (at the time). Carb has since been replaced with a King Demon RS.

Bill do you have to run a special hood to get that all to fit under there? And do you just run the two open element breathers on the valve covers?
(sorry to jump into the thread like this)

Thanks

Matt

Steve,
Ed did testing with that spacer and found it to et exactly the same as the 1/2" 4 hole on top of the 1/2" open spacer.
Brian

Matt,
No "special hood"...just a Harwood 4" cowl.
Yes, two open VC breathers.
Car (and engine-installed) can be seen in my signature...

Thanx guys

Steev

I think a 4" cowl is special.. but thats me...
What type of manifold is that Bill, I can't quite tell by the pictures? Clean install too, but for some reason the inside of my car fogs up pretty easy so I need to keep the heater hoses connected.. Sorry for the thread hijack, but what kind of headers are those?

Matt

Intake is an Edelbrock Super Victor #2927...headers are 2 1/8" Hooker Super Comps.
The car still equipped with heater and blower motor...never got around to running the two hoses. Not a great need for heat most of the year here in the south. ;)

We use one on our 534" with a Dart single plane and 1050 Dominator.

Originally posted by Motor Martyr:
Steve,
Ed did testing with that spacer and found it to et exactly the same as the 1/2" 4 hole on top of the 1/2" open spacer.
Brian Just to add to Brians post, Ed runs a Performer RPM Air Gap dual plane. Results on a single plane may differ.

On my car with a Victor jr intake, the HVH 1" tapered spacer proved zero gains over a 1" open phenolic spacer. This was on a chassis dyno installing the spacer at least three different times each time tweaking the jetting which was of no help.

I'm sure some combinations will respond to the tapered type spacer, but my own combination at that time did not.

Bill- How much HP/TQ are we talking with the 1" HVH spacer compared to nothing?(and how much power was the engine making)

I saw one test with the HVH in the magazines and they picked up 10HP on a 400HP SBC...but thats a magazine test. If it really gives your 10HP I'd think it were cheap power. How much do the HVH spacers go for?

Originally posted by AllGoNoShow:
Bill- How much HP/TQ are we talking with the 1" HVH spacer compared to nothing?(and how much power was the engine making)...
How much do the HVH spacers go for? I'd have to pull out my dyno sheets but based on memory...a difference of 3-4 HP and maybe 5-8 TQ.
Wasn't anything to set you back into your seat.
Based on a motor that dynoed at 696 HP @ 6100, 690 TQ @ 4800, not really worth the $90 cost, I guess.
But, like I mentioned, also using it for a trash plate/vacuum source. And it does heat isolate the carb.
As Todd noted, results would of course vary per application.

I will add that when my car was on the Dyno Charlie at Booze Brothers Racing was quite surprised my car didn't respond well to the HVH spacer. He claims that most cars pick up a measurable amount with some as much as 20hp. That's why we tried it three different times on the dyno as he was sure we missed something on the tuneup which didn't allow the spacer to show any power gains.

It's my understanding this spacer doesn't perform magic, rather it's designed to help dsitribute fuel to the different intake ports more equally. I would tend to think that it if it would improve power on any combination, it would be one with a common plenum single plane manifold.

As stated, it didn't do anything for me which in the end saved me $120. Being able to test shop dyno parts is a nice feature which will give you ideas of real world gains/losses without having to purchase parts that are of no gain to your setup. On that same day, we tested a different carb, plugs, etc.

You know, thinking a little here gets me to considering that guys talk about rolling the underside of the carb. top of the manifold to help the air/fuel flow turn the "corners" better which to me would help with a spacer rolled in too!! Any thoughts on this.

I say this b/c of the highly modified single plane Vizard and the other guy ended up with by raising it's top and rolling it and also increasing the lengths of the runner walls into the plenum.

Any coorelation here??

And I'm not talking about massive power increases but rather better torque production throughout..

pdq67

One thing I might mention...
My HVH spacer, along with the Super Victor intake, is the 4500 flange version, which may or may not make a comparison difference.

Hey guys,

As a general rule of thumb when adding an open type space what should you do with carb jetting? Richer or leaner? :confused:

As far as I was concerned, the HVS Super Sucker simply sucked $80 from my wallet. I thought it "felt" better, but never made any difference in performance. A friend found simular (I spelled this like I wanted to) differences. An open hole worked just fine.
But trust me, at nearly $80.....they made quite a bit of money from them. And BTW......I did work with jets......
Ron

I ran a 1" HVH 4-hole, tapered spacer on my old 383 SBC combo (mid 11's at 3600 lbs). I saw no improvement in ET over a 1" open spacer.

I tested the spacer on both a ported Weaind Team G and with a Super Victor (box stock). No difference on either intake. Jetting loops were performed on both.