Ford 302 pinging

[Scott Danforth]

that is a generic 2300 500 CFM 2-barrel with a j-tube. note the two vacuum ports with caps on it. it will be fine for the application.

you can save some money on ebay. https://www.ebay.com/itm/125630617789

I prefer this one over the avenger you have listed https://www.holley.com/products/fuel_systems/carburetors/marine_carburetors/parts/0-80402-2

 

[Scott06]

@Jakem- before you put a new carb on did you resolve the fuel contamination issue ? You dont want to pollute a new carb with debris

Would also recommend a 4 bbl if you are going to upgrade, I saw much better mid range throttle response when I went from Mercarb to Edlebrock

 

[Lou C]

agreed even my little 4.3 benefited from the Rochester 4bbl...Holley has both 2bbl and 4bbl carbs already calibrated for the Ford 302, I'd make a decision about 2 vs 4 bbl and use one of those.
Of course if you want to move up to the 4bbl you have to find a good intake for the 302. If you have closed cooling you can use an aluminum one.

this one is the 4bbl, 450 CFM

Holley 0-80364 450 CFM Marine Carburetor

All Holley Marine Carburetors are designed to meet Coast Guard specifications. A marine carburetors fuel metering system is calibrated to compensate for unique engine loads found on boats. The J-style vent tubes direct fuel/fumes back into the carburetor for safe operation while on rough...

www.holley.com

this one is the 2bbl, 300 CFM

Holley 0-80320-1 300 CFM Marine Carburetor-Aluminum

All Holley Marine Carburetors are designed to meet Coast Guard specifications. A marine carburetors fuel metering system is calibrated to compensate for unique engine loads found on boats. The J-style vent tubes direct fuel/fumes back into the carburetor for safe operation while on rough...

www.holley.com

I'm not sure why Holley specs carbs that seem to be low in CFM for this engine, even my 4.3 V6 has a 600 CFM Q-Jet, and the unit that Holley specified for this engine is also a 600 CFM

Scott, any thoughts?

 

[Scott Danforth]

agreed even my little 4.3 benefited from the Rochester 4bbl...Holley has both 2bbl and 4bbl carbs already calibrated for the Ford 302, I'd make a decision about 2 vs 4 bbl and use one of those.
Of course if you want to move up to the 4bbl you have to find a good intake for the 302. If you have closed cooling you can use an aluminum one.

this one is the 4bbl, 450 CFM

Holley 0-80364 450 CFM Marine Carburetor

All Holley Marine Carburetors are designed to meet Coast Guard specifications. A marine carburetors fuel metering system is calibrated to compensate for unique engine loads found on boats. The J-style vent tubes direct fuel/fumes back into the carburetor for safe operation while on rough...

www.holley.com

this one is the 2bbl, 300 CFM

Holley 0-80320-1 300 CFM Marine Carburetor-Aluminum

All Holley Marine Carburetors are designed to meet Coast Guard specifications. A marine carburetors fuel metering system is calibrated to compensate for unique engine loads found on boats. The J-style vent tubes direct fuel/fumes back into the carburetor for safe operation while on rough...

www.holley.com

I'm not sure why Holley specs carbs that seem to be low in CFM for this engine, even my 4.3 V6 has a 600 CFM Q-Jet, and the unit that Holley specified for this engine is also a 600 CFM

Scott, any thoughts?

I would run a 600 CFM 4150 myself.

Volvo put 715 CFM holleys on 350's While some argue its overkill, cant complain about the mid-range throttle response.

 

[Lou C]

4150 has the advantage of 4 corner idle adjustment, external float adjustment and fuel level sight plugs but with the fuel inlets on both bowls it is a good bit longer than the 4160 with the side fuel inlet. Don't think it would fit on a 4.3 but on a Ford 302 it shouldn't be a problem.

 

[Jakem]

The fuel contamination is fixed and installed the anti siphon. Changed filters. Gas is good and clean. I do have closed cooling. To go from 2 barrel to 4 is about 2000 from what I can tell.

 

[Scott Danforth]

The fuel contamination is fixed and installed the anti siphon. Changed filters. Gas is good and clean. I do have closed cooling. To go from 2 barrel to 4 is about 2000 from what I can tell.

should be $50-100 for a used intake manifold and the cost of a carb and a gasket set. heck if you want all new components and paid someone to do the work you wouldnt be over $1000

$2000 is about 4 to 5x of actual cost.

 

[Scott Danforth]

4150 has the advantage of 4 corner idle adjustment, external float adjustment and fuel level sight plugs but with the fuel inlets on both bowls it is a good bit longer than the 4160 with the side fuel inlet. Don't think it would fit on a 4.3 but on a Ford 302 it shouldn't be a problem.

I know that a 650 CFM double pumper fits on a Buick V6

 

[Jakem]

The carbs I see are 800 - 1000 American...I'm canadian lol

 

[Scott Danforth]

The carbs I see are 800 - 1000 American...I'm canadian lol

see PM

 

[Jakem]

that is a generic 2300 500 CFM 2-barrel with a j-tube. note the two vacuum ports with caps on it. it will be fine for the application.

you can save some money on ebay. https://www.ebay.com/itm/125630617789

I prefer this one over the avenger you have listed https://www.holley.com/products/fuel_systems/carburetors/marine_carburetors/parts/0-80402-2

Would the 500 cfm on eBay be to many cfm or no. Also does it matter that it says omc

 

[Lou C]

I know that a 650 CFM double pumper fits on a Buick V6

Even with that big OMC style thermostat housing? I think they used the 4160 with the side mount fuel inlet on the 4.3s because of that. I don’t think a front fuel inlet Holley will fit on the 4.3s. Not sure with those old Buicks haven’t seen one in years.

 

[Scott06]

The fuel contamination is fixed and installed the anti siphon. Changed filters. Gas is good and clean. I do have closed cooling. To go from 2 barrel to 4 is about 2000 from what I can tell.

Ho did it run after that was pinging gone?

Would the 500 cfm on eBay be to many cfm or no. Also does it matter that it says omc

500 cfm will be fine for a 302 nit sure what ebay link you are referring to. Unsure if omc uses a different throttle linkage.

 

[Jakem]

I haven't went for a burn yet its snowing lol. I am going to run it a few times and perhaps I'm going to far with new parts. I just like to be prepared

 

[Scott06]

I haven't went for a burn yet its snowing lol. I am going to run it a few times and perhaps I'm going to far with new parts. I just like to be prepared

Certainly understandable, you want to get it to the point where you mostly turn it on and use it vs working on it. Personally would hold off and get a 4 bbl as the rochester if jetted correctly should work fine. Unless there is something wrong with it you wont see any gain Just getting a new 2 bbl.
rochesters are not the most sophisticated carb but im a fan due to simplicity . quite a long run from mid 50’s through its descendant the Mercarb that made it until 2010 or so…i might be jaded though, the pic is three of them on my GTO.

 

[Jakem]

I'll trade my boat for your car lol

 

[Lou C]

Certainly understandable, you want to get it to the point where you mostly turn it on and use it vs working on it. Personally would hold off and get a 4 bbl as the rochester if jetted correctly should work fine. Unless there is something wrong with it you wont see any gain Just getting a new 2 bbl.
rochesters are not the most sophisticated carb but im a fan due to simplicity . quite a long run from mid 50’s through its descendant the Mercarb that made it until 2010 or so…i might be jaded though, the pic is three of them on my GTO.

“Three deuces & a 4 speed & a 389…listen to her tachin’ up listen to her wind…”
Know the tune?

 

[Jakem]

Yeah yeah little gto

 

[Scott06]

I'll trade my boat for your car lol

This will make you feel better about your boat- took me 30 years from when I bought it as a non running/ non driver project to get it road worthy..

 

[Scott Danforth]

This will make you feel better about your boat- took me 30 years from when I bought it as a non running/ non driver project to get it road worthy..

that is a lot of blood, sweat and beers