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Old 03-07-2009, 09:49 PM
pena0724's Avatar
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Carbuertor help

Does any one know what carb i should get to run on my chevy 350 flat top pistons bored 30 over with dart pro one heads 64cc 202 int 160 exh 180 runners with a single plane older weiland intake i also have a duel plane intake not sure what kind i know both are aluminum. My mechanic say i should use a 4150 holley 650cfm but i hear other wise this car is a 87 olds cutlass supreme wit a 350 turbo don't know on the stall yet will find out soon i hear i want at least a 2,400. this car will be a daily driver i do want it to have some kick though. No drag racing. My cam is as follows

Basic Operating RPM Range: 1,600-5,800
Intake Duration at 050 inch Lift: 224
Exhaust Duration at 050 inch Lift: 230
Duration at 050 inch Lift: 224 int./230 exh.
Advertised Intake Duration: 268
Advertised Exhaust Duration: 280
Advertised Duration: 268 int./280 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.477 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.480 in.
Valve Lift with Factory Rocker Arm Ratio: 0.477 int./0.480 exh. lift
Lobe Separation (degrees): 110

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Last edited by pena0724; 03-07-2009 at 09:55 PM.
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Old 03-07-2009, 10:05 PM
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Holley is good, but for a mild street setup I like the ease of a good ole Edelbrock 5-600 cfm. Pretty hassle free and a nice carb. HG
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Old 03-07-2009, 10:12 PM
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Im building a 350 just purchased a 750 edelbrock ,I chose it because of the simalarity to a quadrajet and I like quads.
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Old 03-08-2009, 06:12 AM
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Quote:
Originally Posted by pena0724
Does any one know what carb i should get to run on my chevy 350 flat top pistons bored 30 over with dart pro one heads 64cc 202 int 160 exh 180 runners with a single plane older weiland intake i also have a duel plane intake not sure what kind i know both are aluminum. My mechanic say i should use a 4150 holley 650cfm but i hear other wise this car is a 87 olds cutlass supreme wit a 350 turbo don't know on the stall yet will find out soon i hear i want at least a 2,400. this car will be a daily driver i do want it to have some kick though. No drag racing. My cam is as follows

Basic Operating RPM Range: 1,600-5,800
Intake Duration at 050 inch Lift: 224
Exhaust Duration at 050 inch Lift: 230
Duration at 050 inch Lift: 224 int./230 exh.
Advertised Intake Duration: 268
Advertised Exhaust Duration: 280
Advertised Duration: 268 int./280 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.477 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.480 in.
Valve Lift with Factory Rocker Arm Ratio: 0.477 int./0.480 exh. lift
Lobe Separation (degrees): 110

I just made a simmilar recomendation, a 4779 Holley 750 would work well on your combo.

Last year I built a custom annular 850 for a combo close to yours but he was also drag racing and he picked up .04 sec.
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Old 03-08-2009, 06:28 AM
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I beleive I would run a #3310 vacuum secondary holley great street manners, easy to tune and power when you want it.A vac secondary is a better choice on the street 90% of the time due to the fact it gives the engine what it wants instead of forcing it take what it gives.They pretty much size themselves automaticaly the secondaries will only open as far as the engine can use pretty much ruling out over carbing it.
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Old 03-08-2009, 08:47 PM
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4779 carb is what i would buy... check airflowresearches' website, thats what they use on almost all street engines up to 500 hp
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Old 03-08-2009, 08:49 PM
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Holley 650 would be great. I would go for the spreabore version just because the smaller primaries will help throttle response.

A well-tuned Qjet would also kick a lot of butt and maybe make a touch more power given its 750-800 cfm air doors.
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Old 03-08-2009, 08:57 PM
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Holley 1850 or 3310 for the reasons already mentioned.

Vince
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