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Joined: Aug 2006
Posts: 29
Member
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Member
Joined: Aug 2006
Posts: 29 |
Does anyone know the size of the factory 4bbl Rochester Carburetor (cfm) that came on the 350 H.O. and the 400 cubic inch for 1969. Reason I'm asking is because I'm building up my factory 69 350 2bbl to 350 H.O. specs with the 48 heads, .67 cam, 4bbl intake...etc but have no idea how big the 4bbl carbs are that were used for that year so I can properly match with a Holly or carter carb.....dont want to have to much carb but dont want to have to small of a carb on there as well.
Thanks,
George
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Joined: Apr 2000
Posts: 7,408
Power Member
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Power Member
Joined: Apr 2000
Posts: 7,408 |
Q Jets are demand orientated after proper calibration. I believe either 730 or 750 CFM. Maybe tt Cliff Ruggles. [email protected]
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto
1968 Alpine Blue 400 4 speed
1968 Verdoro Green 400 HO 4 speed
2013 1LE 2SS/RS Inferno Orange Camaro.
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Joined: Mar 2004
Posts: 11,905
Valued Mentor
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Valued Mentor
Joined: Mar 2004
Posts: 11,905 |
Manifold you are purchasing is a spreadbore, you may wish to consider purchasing a Quadrajet and having it calibrated to 350 HO specs by Cliff Ruggles. Banshee provided his contact info.
With the vacuum secondaries on the Quadrajet, the carb "size" is controlled by engine demand, up to 750 cfm with the body used on 68s and 69s.
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