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Old 03-18-2014, 04:54 AM
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Holley spreadbore carb on stock cast intake

Hi.
My Qjet gives me not good performance and mileage,I rebuilt it last year but nothing happened.
Would it be a good idea to bolt a new spreadbore single inlet Holley on stock intake? Is there any advantage in buying an Aluminum intake?
My engine is a 1976 stock Chevy 350!

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Old 03-18-2014, 09:38 AM
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Originally Posted by Buick b4 View Post
Hi.
My Qjet gives me not good performance and mileage,I rebuilt it last year but nothing happened.
Would it be a good idea to bolt a new spreadbore single inlet Holley on stock intake? Is there any advantage in buying an Aluminum intake?
My engine is a 1976 stock Chevy 350!
The spread bore Holley will fit the Q jet intake. Aftermarket aluminum intakes are usually sought to improve power which tends to be upper end rather than across the RPM range. They do cut a few pounds off the engine but unless this is an FE block Ford the weight savings isn't very large.

Bogie

Last edited by oldbogie; 03-18-2014 at 09:54 AM.
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Old 03-18-2014, 01:12 PM
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I checked Jegs website and they offer remanufactured Qjet!
I always heard that good built Qjet will outperform any other carbs so i guess it should be a good idea to buy a good Qjet instead of changing intake or buying a Holley!
The initial timing is set on 10 and every thing works well but throttle response is not as good as it was in past.
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Old 03-18-2014, 06:13 PM
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A properly set up Q Jet should give good performance on a 350 Chevvy. As for the fuel mileage, how much does a 76 chevvy weigh. Some of the older cars i know for a fact give very good gas mileage but in 76 the emission controls caused a loss of mileage. I know in 1966 i had a Pontiac Parisienne 2 door hardtop with a 396/ 325 HP & 4 spd. tranny and it gave 28 MPG on the highway. Emission controls are costly.
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Old 03-19-2014, 01:39 AM
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Originally Posted by 51 styline View Post
A properly set up Q Jet should give good performance on a 350 Chevvy. As for the fuel mileage, how much does a 76 chevvy weigh. Some of the older cars i know for a fact give very good gas mileage but in 76 the emission controls caused a loss of mileage. I know in 1966 i had a Pontiac Parisienne 2 door hardtop with a 396/ 325 HP & 4 spd. tranny and it gave 28 MPG on the highway. Emission controls are costly.

It is a 76 Nova,We don't need emissions here so how can i get rid of all emission controls ?! should i change any parts?
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