which distributor?
Cargo Master
Joined: Dec 2004
Posts: 3,362
Likes: 22
From: Florence, SC
If the engine is stock, you will need a CAST IRON gear. Only Mustangs used a steel gear.
What size carburetor are you planning to get?
What size carburetor are you planning to get?
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Junior User
Joined: Jan 2005
Posts: 75
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i got an edelbrock performer 600cfm (1405 w/ electric choke kit added) with the performer intake
so i will get the distributor w/ the cast iron gear...
so i will get the distributor w/ the cast iron gear...
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Elder User
Joined: Mar 2004
Posts: 517
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From: Texas
Originally Posted by scooter1986
i got an edelbrock performer 600cfm (1405 w/ electric choke kit added) with the performer intake
so i will get the distributor w/ the cast iron gear...
so i will get the distributor w/ the cast iron gear...
Moderator
Joined: Jan 2001
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From: Virginia
I ran a 1980 duraspark II distributor in a 1986 roller cam 5.0 EFI block for 8 years and had no trouble. This was on the advice of a local engine rebuilder who said when using a Ford cam(roller or regular),it did not matter about the gear.
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Originally Posted by scooter1986
I have an 85 w/ 302 that i believe is stock. I am about to do the vv conversion to edelbrock 4bbl with duraspark II....do i need cast iron gear or steel?
If you decide to get a new distributor, consider our custom curved Duraspark Distributor built with our new Full Length Oil Impregnated Bronze Bushing. The full length bushing improves timing stability and spark scatter. If stock appearance is not an issue, take a look at our one piece D.U.I. Distributor. Whether you choose the Duraspark or the D.U.I., we curve each on a distributor machine based on your engine combination. Please see them at:
http://www.performancedistributors.c...dduraspark.htm
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Cargo Master
Joined: Dec 2004
Posts: 3,362
Likes: 22
From: Florence, SC
The Edelbrock Performer Intake sounds good, but I think you will be over-carbing the 302 with a 600cfm carburetor.
When it comes to choosing a carburetor, bigger is NOT always better. If you go with a carburetor that is too big for your application, you will lose bottom end power but possibly gain it when you start spinning some high rpm's. How high will you be spinning the engine? Remember, it is a TRUCK. Unless you are going to race it, I highly doubt you will ever see anything over 5,000 rpm. To determine OPTIMAL carburetion, there is a mathematical formula that will get you close:
Engine displacement x Max. RPM / 3456
Of course, carburetor manufacturers only make so many models, so plug your numbers in and you will find that a 400 - 500cfm carburetor would probably be a much better carburetor for the small 302.
Good luck with your '85 302.
When it comes to choosing a carburetor, bigger is NOT always better. If you go with a carburetor that is too big for your application, you will lose bottom end power but possibly gain it when you start spinning some high rpm's. How high will you be spinning the engine? Remember, it is a TRUCK. Unless you are going to race it, I highly doubt you will ever see anything over 5,000 rpm. To determine OPTIMAL carburetion, there is a mathematical formula that will get you close:
Engine displacement x Max. RPM / 3456
Of course, carburetor manufacturers only make so many models, so plug your numbers in and you will find that a 400 - 500cfm carburetor would probably be a much better carburetor for the small 302.
Good luck with your '85 302.
Cargo Master
Joined: Dec 2004
Posts: 3,362
Likes: 22
From: Florence, SC
There is no doubt it will work, and with the proper tuning, it will work great. Still, I will have to disagree and say that, as an example, out of the box, it will be much easier to get a 500 cfm carburetor to work with a stock (truck) 302 than it would be to get a 600 cfm carburetor to work with a 302. In other words, the 600 cfm carburetor will take more tuning than a 500 cfm carburetor to run efficiently with a small V-8 like a 302.
500 cfm = will give you more torque and better throttle response, but will probably run out of breath past 5500 rpm or so
600cfm = will give you less torque but more horsepower in the higher rpm
Again, it all depends on what you are going to use the truck for.
500 cfm = will give you more torque and better throttle response, but will probably run out of breath past 5500 rpm or so
600cfm = will give you less torque but more horsepower in the higher rpm
Again, it all depends on what you are going to use the truck for.
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
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From: Exmore, VA
Back in the day of the Ford muscle parts program, the 600 cfm Holley off the 390 GT engine was the reccommended carburetor for the 289-302 engines. I used to run a carburetor shop and a 600 cfm vacuum secondary Holley worked very well on these applications. 500 cfm is a hard Holley to find except in a 2 bbl. The service carb that Holley used to sell, PN 1-191 was a 465 cfm unit.