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Author Topic:   2 barrel carbs
James Ott
Dirt Maniac

Total posts: 131
posted August 04, 2005 01:11 PM  
Rules up here say stock 2bbl carb and intake
350 chevy. Any ideas

Eljojo
Dirt Forum Champ
Total posts: 968
posted August 04, 2005 02:32 PM  
yeah,,,,,, www.kinecticperformance.com

[This message has been edited by Eljojo (edited August 04, 2005).]

[This message has been edited by Eljojo (edited August 04, 2005).]

Eljojo
Dirt Forum Champ
Total posts: 968
posted August 04, 2005 02:37 PM  
That ain't right! Post a PM for KP Lugnut-That's Dayton Umholz. He owns the carb shop with the wiedr name!!!!

DangerZoneRacing
Dirt Maniac

Total posts: 176
posted August 04, 2005 04:19 PM  
Ya put one to many "C"'s in kinetic Eljojo....lol.

James Ott
Dirt Maniac

Total posts: 131
posted August 04, 2005 08:08 PM  
You still have'nt told me anything about intakes. We have a 1.250 venturi rule as well. Right now I have a '67 327 intake sitting on my 350 chevy and I need some help on the carb. Is the 3919801 a good intake to use? Can you help me with a carb number to hunt for?
Thanks again

------------------
"Winnig heals all wounds"

bubba0six
Dirt Maniac

Total posts: 146
posted August 04, 2005 10:24 PM  
that rule is wide open. or atleast at our track it would be! stock carb, now that means stock, But it dosent sa stock for what. at our track that means stock, no matter what it came off of as long as it is stock!!

Speedracer92
Dirt Full Roller

Total posts: 70
posted August 05, 2005 07:25 AM  
I think the 1.25" venturi rule is what is going to really hold you back though and dictate what kind of carb you will be able to run. If I am remembering correctly, the big rochester carbs with 1 11/16" butterflies come with 1 1/4", 1 5/16" and 1 3/8" venturis. I have always ran the bigger venturi carb but there are plenty of 1 1/4" carbs out there. As far as intakes, I run the canadian 3916313 which is supposed to be about the best stock 2 barrel intake you can find. There are usually some on Ebay but can be hard to find. I think your 801 is probably about the next best thing though so it would be ok too. Other than that, I agree you should talk to Dayton at Kinetic Performance!

[This message has been edited by Speedracer92 (edited August 05, 2005).]

[This message has been edited by Speedracer92 (edited August 05, 2005).]

James Ott
Dirt Maniac

Total posts: 131
posted August 19, 2005 04:21 PM  
I got a 313 coming, bought it on Ebay. and i got a 7041113 rochester 2 bbl.

sidebiteu259
Dirt Full Roller

Total posts: 56
posted August 19, 2005 05:21 PM  
Chevrolet Chevy small-block cast iron HIGH-RISER factory 2 barrel 2 bbl. intake manifold. GM #14088874. At tracks that specify you must run a factory 2 bbl. steel intake, this is THE ONE you want to run if you run a Chevy motor. The dyno showed me a 17 horsepower GAIN by just switching the factory low-riser for this one. NO OTHER CHANGES were made. Fact is, the smaller the carb (or higher the rpm), the further a given carburetor wants to be from the floor of its intake manifold. The greater spacing allows the wet-flow some additional distance to negotiate turns into runners without encouraging separation of air and fuel

Hoosierdaddyracin
Dirt Roller

Total posts: 17
posted September 01, 2005 06:28 PM  
Jet performance sells a 2 barell rochester that flows like a 4412 that looks completly stock

KPLugnut
Dirt Forum Champ
Total posts: 1019
posted September 02, 2005 06:53 AM  
The "catalog" carbs like what Jet is selling are NOT 1 1/4" venturi carbs. They start out as that size, but they punch them out to 1 3/8" and do a poor job of re-contouring the venturi for proper booster signal and top end fuel flow. Then they stick a stock rebuild kit in 'em and sell them as racing carbs.....hardly....

If the rule mandates any iron intake (313 the most common good choice) and the carb has to be a 1 1/4" venturi body, there is still MUCH that can be done to the carb to make it perform like a much larger carb.

Whenever you're ready, we're here....

email: kineticperformance@thedirtforum.com

KP

James Ott
Dirt Maniac

Total posts: 131
posted September 02, 2005 06:10 PM  
Thanks KP as I said before as soon as the season is over we will be starting on the "Big" stock car. Expect a carb your way!
sold any to Canada? I got a cousin in law that runs at Merritville he might want one as well

KPLugnut
Dirt Forum Champ
Total posts: 1019
posted September 02, 2005 08:18 PM  
Although we hate the "duty fees" as much as you do, we've sold several to customers up north. Places like Ontario, "Sascatch", and even Alaska.
Haven't shipped any down under to Australia yet, tho. I wonder how many stamps that'd take? :-)
Thanks, and lookin' forward to a busy fall season, and an even busier winter/spring.

KP

James Ott
Dirt Maniac

Total posts: 131
posted September 03, 2005 07:10 AM  
KP, When dealing with Canada it is best too use the good old USPS. The handling fees that UPS charges is disgusting. People should send thier stuff to you marked "for repair" as well as you should when you return it. keeps the cost down. Hope this helps. Oh yeah the first carb i rebuilt seems to run OK but when i rev the snot out of the motor some vapour comes out of the bowl vent holes, is that normal?

KPLugnut
Dirt Forum Champ
Total posts: 1019
posted September 03, 2005 07:42 AM  
Not really "normal", it's pullover from high manifold vacuum and just the turbulence caused by the poor bowl vent design. When possible, sometimes we'll install a tube straight up from the vent inlet area to help stop that from happening. Many classes, however, won't allow that kind of modification, calling it an "illegal alteration"....

Thanks for the tip on shipping methods, too. :-)

KP

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