carb
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Joined: Mar 2003
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carb
I have a 86 class c motorhome with a 460. I am going to pull the top end down to replace the exhaust manifold gaskets and do a valve job. I don't know what this has for a carb (does anyone know offhand)but im not happy with it. I will be going to a number of auto flea markets and can probably pickup a decent carb if anyone can give me an idea of what will work good on this unit. I am not going to pull the motor down for aanother couple of months so I have time to look around at the flea markets. thanx wnk.
Senior User
Joined: Aug 2000
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carb
Ford used a <a href="http://motorhaven.autoanything.com/">Holley</a> 600 cfm emission carb on this motor. It is known as a model 4180.
I recently replaced mine on my `85 F350 with 460. I went with an Edelbrock 1406. This is a non-emissions 600 cfm carb. Edelbrock offers remanufactured versions of their new carbs and I purchased mine from Summit Racing for about $180. I went with a non-emissions carb because I have removed all emissions devices and advanced my cam timing to the pre-emission position.
I looked at the Holly line too but decided on the Edelbrock for several reasons. First off I did not want to go with a direct replacement <a href="http://motorhaven.autoanything.com/">Holley</a> because it was very pricey (over $400 if I remember correctly) and it was an emissions carb. The 1850 model line from <a href="http://motorhaven.autoanything.com/">Holley</a> is comparable to the Edelebrock 1406. But, the <a href="http://motorhaven.autoanything.com/">Holley</a> carbs are more difficult to keep in tune and changing out jets and the like is more work. Every motor will respond a bit differently to a carb so making changes to the fuel mixture is a high probability. The Edelbrock is much easier to do this. The Edelbrock carb is somewhat of a spread bore design in that the primaries are a bit smaller than the secondaries. It is designed to work on a square bore manifold, but with the smaller primaries it will be more responsive off idle and should provide better gas mileage. Lastly, I did not go larger in cfm because my motor is a low rpm engine and I figured the Ford engineers are pretty good at specing the right size carb.
I have been very happy with the Edelbrock and strongly recommend it.
Good luck,
Mark
I recently replaced mine on my `85 F350 with 460. I went with an Edelbrock 1406. This is a non-emissions 600 cfm carb. Edelbrock offers remanufactured versions of their new carbs and I purchased mine from Summit Racing for about $180. I went with a non-emissions carb because I have removed all emissions devices and advanced my cam timing to the pre-emission position.
I looked at the Holly line too but decided on the Edelbrock for several reasons. First off I did not want to go with a direct replacement <a href="http://motorhaven.autoanything.com/">Holley</a> because it was very pricey (over $400 if I remember correctly) and it was an emissions carb. The 1850 model line from <a href="http://motorhaven.autoanything.com/">Holley</a> is comparable to the Edelebrock 1406. But, the <a href="http://motorhaven.autoanything.com/">Holley</a> carbs are more difficult to keep in tune and changing out jets and the like is more work. Every motor will respond a bit differently to a carb so making changes to the fuel mixture is a high probability. The Edelbrock is much easier to do this. The Edelbrock carb is somewhat of a spread bore design in that the primaries are a bit smaller than the secondaries. It is designed to work on a square bore manifold, but with the smaller primaries it will be more responsive off idle and should provide better gas mileage. Lastly, I did not go larger in cfm because my motor is a low rpm engine and I figured the Ford engineers are pretty good at specing the right size carb.
I have been very happy with the Edelbrock and strongly recommend it.
Good luck,
Mark
