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Old 03-16-2007, 03:57 PM
 
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what carbs will work with a 1976 oldsmobile 455

hey i am very new to these older engines and i was wondering if there was other engines with the same carb as a 1976 oldsmobile 455 engine. also how much could i find a newer aftermarket one for?
any help would be useful.
thanks
miles

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Old 03-16-2007, 04:25 PM
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A 670 Holley Street Avenger would work quite nicely for street but if its a strip car a 750 Holley Double Pumper would work too.....

If you prefer Edelbrock a 600 Edelbrock Performer for the street or an 800 Edelbrock Thunder Series AVS for the strip.

Holley 670 Street Avenger: $379.95
Holley 750 Double Pumper: $429.95
Edelbrock 600 Performer: $249.95
Edelbrock 800 Thunder Series AVS: $379.95
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Old 03-16-2007, 04:28 PM
 
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thanks for the reply. i forgot to add that it is in a 19 foot jet boat. does that mean i need a marine carb? also what size should i go with if its on a boat?
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Old 03-16-2007, 04:33 PM
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Ohh if its in a boat I would recommend an 800cfm Holley Marine Carb Summit Racing Part number HLY-0-9022 it retails for $489.95
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Old 03-16-2007, 05:32 PM
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The original carb would have been a Quadra-Jet (spread bore). If you are using the original intake a holley (square bore) wont bolt up without and adapter.
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Old 03-16-2007, 08:10 PM
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You could use a quadrajet off of any 455 buick olds or pontiac, or 454 chevy, or 472/500 cadillac motor, should be close enough to work. If you still have the original carb and the motor is not really modified then keep the original carb and rebuild it. There should be a guy in your area who rebuilds them.
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Old 03-16-2007, 09:21 PM
 
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alright i am thinking i am just going to stay with stock carbs. do you think they will be ok even if they are on a boat?? also how much should i pay for a used carb that is in good condition.
thanks
miles
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Old 03-16-2007, 09:36 PM
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marine carbs are different then ones you would find on a car,i would bet you will have problems the first time your out.them boats don't have a soft landing and marine carbs have special floats jettings different.what i'm saying is to take a look at some of the marine applications as compared to a street carb.hares what i would use cuz the engine don't turn but 4000-4500rpms.http://www.holley.com/0-80552.asp

Last edited by nitro_baller4692; 03-16-2007 at 09:41 PM.
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