Best carb for a 400.

[g1os]

What is the best carburetor for a 1972 Bonneville 400 motor? I would like to put something in there that I don’t have to adjust often. I also need a four barrel carburetor.

Thank you
Gio

 

[melsg5]

what is on it now?

 

[g1os]

what is on it now?

I bought motor without one

 

[melsg5]

I bought motor without one

What intake manifold is on the engine?

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[g1os]

4 barrel.

 

[avell007]

Rochester Quadrajet imo , better fuel milage than a universal Holley 4bbl

 

[melsg5]

4 barrel.

I assumed a 4bbl.
I need to know if it it a factory 4bbl intake which would be a spread bore design or whether it has been replaced with an aftermarket square bore intake?
If it is a spreadbore design the Quadrajet is the best carburetor for it.

 

[g1os]

I assumed a 4bbl.
I need to know if it it a factory 4bbl intake which would be a spread bore design or whether it has been replaced with an aftermarket square bore intake?
If it is a spreadbore design the Quadrajet is the best carburetor for it.

Oh it’s definitely factory it’s heavy as hell lol just like everything else on it lol.. It’s the one on the left.

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[g1os]

Rochester Quadrajet imo , better fuel milage than a universal Holley 4bbl

Thanks

 

[g1os]

Any other suggestions?



I assumed a 4bbl.

I need to know if it it a factory 4bbl intake which would be a spread bore design or whether it has been replaced with an aftermarket square bore intake?
If it is a spreadbore design the Quadrajet is the best carburetor for it.

 

[melsg5]

Holley 4165 series or 4175 series, both spreadbore type carburetors

 

[g1os]

Holley 4165 series or 4175 series, both spreadbore type carburetors

Thx

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