Anyone ever seen this Holley 3bbl???

[bigcatchdaniel555]

i have heard of it once or twice but never really seen one wonder how it would work on one of our sixes with proper machining.

http://cgi.ebay.com/ebaymotors/Holley-3 ... enameZWD1V

 

[Anonymous]

wow thats strange

 

[Anonymous]

Now that looks strange
Does anyone have the measures so that we can find out if it fits the regular adapters or if we have to design a new one.

And some info would be great....built (from when to when)....used on....



regards, ludwig

 

[wsa111]

Seen many of them. They are designed for 450" + engines.

That carb could feed 3 200 sixes.

 

[CoupeBoy]

IIRC, its got a spreadbore pattern and to use it you need to grind out the center divider between the secondary butterfly holes. The Holley book I have at home has some discussion on them.

-ron

 

[Anonymous]

Did some research about it
Rebuild kits are still available for the 3 barrel holley carb with the number 3-405
Look here at summitracing: http://store.summitracing.com/partdetai ... toview=sku

So if anyone buys one and then wants to rebuild it....that´s what you gotta go for.

But nothing is to big for an engine....i bet this would be great on one of our sixes

regards, ludwig

 

[bigcatchdaniel555]

i looked a little mor and on summitt it actualy lists an adapter for one so who knows they made a series of these carbs the smaller 3160 might actually work because it flows 650 but these may work too.

 

[in2hotrods]

Did anybody happen to read that it says 950cfm? That's awful big don't ya think?

 

[addo]

Exactly. Even a hopped up 200 running to 6000RPM only pulls 300-odd CFM.

What's Daniel going to do with the other 650 CFM - keep it in a shoebox?

More seriously, getting it right is important; overdoing the fuel is not going to add anything more than misery when it won't tune up right or run well.

 

[bigcatchdaniel555]

i dont want it looks like a little too much work not to mention parts availability maybe for a 289 or 302.

 

[addo]

It would run better on the engines like William mentioned - big blocks; over 450 cubes. Even a 302's CFM isn't that great and a 650 will feed it well.

 

[kukm66]

Maybe do like the individuals who use solar, wind, etc. power and sell it back to the electric company. Take the extra CFM and sell it back to the gas companies at an exhorbitant price and stick it to them real good!!!

 

[Anonymous]

a buick dealership used it on the 69-70 model stage1 gs

but only in the stage 3 configuration a friend of mine has one.

he has a standing bet
he'll take you out to the airstrip where he works and throw a $100 bill on the dash if you can grab it during take off you can have it.

no one has been paid in 24 years.

oh and that a 455 for the younger guys.

 

[rbohm]

8) i have seen a few being used with mixed results. it was an interesting way to get some extra cfm without going to larger throttle bores.

 

[Anonymous]

I have one of these, and I had it listed on ebay a month ago. It didn't go at auction so it's still available.

Marty

 

[STEVEN.]

Lots of "Dealer-Modified" Musclecars,such as the Baldwin-Motion Phase-III Camaro's(as well as others...)used these Carbs. ~OO6.

 

[Crosley]

dang...... i remember those when they were new. Not too popular as I recall

 

[Anonymous]

That three barrel was designed by Holley in 1969 to counter the Ford Boss 302's then using four singles on their engine used in Trans-Am. It was not put into production or sold over the counter until the 1970 line was announced at G.M. The Trans-Am rules go changed, and 350 engines there then permitted. The original three barrel carbs, may have been smaller in CFM, but are not listed anyway. That three barrel you see was designed for home use on a special Chevrolet 350 engine. I think G.M. was trying to get some concession ought of SCCA for Trans-Am by stating it had one less venturi. It had such a whopping CFM, it worked on bigger engines too.

Modifications at that time were only milling a slot in the 4 BBl. manifold in order to clear the with second throttle plate. Used to see them at Riverside Raceway, and they may ahve made more horsepower, but the bigger body on Camaros for 1970 ruined that effort.

Wm.