Help wanted with the Carter/Weber progressive 2bbl carbs from langdon Stovebolt on an offenhauser dual carb (2 x 1bbl) manifold. Do they work out of the box? jetting changes? I know this HAS been done before as stated here - but nobody said what was really needed to get them working. They have electric chokes - I despise electric chokes so hopefully can convert to t manual - but as-is - do they need to be re-jetted for use on a 225 with mild cam, ported head and headers? I have the 2bbl/1bbl adapter pair - but think just machining the manifold for the 2bbl carbs and installing new studs will be easier - some carb heat will be provided and there is more under-hood clearance. As it sits now - I have both this dual carb setup AND a 390cfm Holley re-jetted and ready to go on an Offenhauser 4bbl manifold. The 4bbl setup works - have used it twice before - but would really like the look of 2 carbs.

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Tom
'86 Alfa Romeo Spider, red "Dinsdale"
'10 Corvette, red "" (no name yet)
'95 Ferrari 348, red "Zoom"
'04 Maserati, black "Evil"
'05 Aston Martin DB9, green "Bond, Treasury bond."
'82 Dodge W150 Power Ram, yellow "E. Valdez"

Buy a wideband oxygen sensor and have at it! Bring lots of patience and extra money for jets. I'm moving away from carburetors myself.

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Joshua

I was thinking of the O2 sensor on the dash . . . .

Want carbs - if this were a power/drivability build - FI all the way. Hmmm. Maybe dummy carbs and FI?

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Tom
'86 Alfa Romeo Spider, red "Dinsdale"
'10 Corvette, red "" (no name yet)
'95 Ferrari 348, red "Zoom"
'04 Maserati, black "Evil"
'05 Aston Martin DB9, green "Bond, Treasury bond."
'82 Dodge W150 Power Ram, yellow "E. Valdez"

I have been running dual carb setup for 5 yrs . Mild Erson cam, headers, dual 2 inch exhaust . It has worked perfect with stock carb jets or 2 sizes leaner . With headers do not need any added heat and i dont use any choke runs perfect after about 1-1/2 minute warm up at high idle. I have 65 dart wagon 223 gear gets 23 MPG at 2,900 rpm. With highway gear maybe 25-28 mpg possible . I run 16.20 consistent with it and weights 3,305 lbs with me in it . I do not believe 4 barrel works nearly as good . Ive race with Killer Bees Racing for 5 yrs with this set-up runs awesome. Mild 2000 rpm stall converter . Going to buy a 2600-2800 stall this winter. I am running 2 1barrel Holley 1920 carbs. I would love to have webers, maybe someday. I hope this helps .

Thanks! Sounds like you have a good setup. I will figure out some way to get a cold air intake rather than underhood.

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Tom
'86 Alfa Romeo Spider, red "Dinsdale"
'10 Corvette, red "" (no name yet)
'95 Ferrari 348, red "Zoom"
'04 Maserati, black "Evil"
'05 Aston Martin DB9, green "Bond, Treasury bond."
'82 Dodge W150 Power Ram, yellow "E. Valdez"