original tire diameter
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Freshman User
Joined: Apr 2009
Posts: 33
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original tire diameter
My goal to make an everyday driver would be assisted by getting some info on original wheel 16-4 offset and the 6.00 x 16 tires on the F1. With this info I can use the gear calculator to determine the rear gearing. Right now I am looking to use a 3.25 rear end with the original 3 speed tranny and my old flatty.
Any help would be greatly appreciated.
Any help would be greatly appreciated.
Laughing Gas
Joined: Jul 2003
Posts: 1,224
Likes: 19
From: scotia. NY 12302
kmule, i've been looking into the same question myself. from the motor manual, the original wheels are 6.00x16-4 wheel type; 16x4 1/2K offset .62 with 738 revs per mile (i believe the wheel width is 4 1/2").
with 738 revs per mile that amounts to circumference (roll out) of 7.15 feet (note the decimal, not feet/inches). that would indicate a diameter of 2.28 feet (approx 28").
also, the manual indicates a rearend ratio of 3.92 with an optional 4.27. good luck in your search. there were two threads on this topic recently: mine on 9" specs and one on top speed. they should only be a couple of pages back.
good luck, dick r.
with 738 revs per mile that amounts to circumference (roll out) of 7.15 feet (note the decimal, not feet/inches). that would indicate a diameter of 2.28 feet (approx 28").
also, the manual indicates a rearend ratio of 3.92 with an optional 4.27. good luck in your search. there were two threads on this topic recently: mine on 9" specs and one on top speed. they should only be a couple of pages back.
good luck, dick r.
Thread Starter
|
Freshman User
Joined: Apr 2009
Posts: 33
Likes: 0
kmule, i've been looking into the same question myself. from the motor manual, the original wheels are 6.00x16-4 wheel type; 16x4 1/2K offset .62 with 738 revs per mile (i believe the wheel width is 4 1/2").
with 738 revs per mile that amounts to circumference (roll out) of 7.15 feet (note the decimal, not feet/inches). that would indicate a diameter of 2.28 feet (approx 28").
also, the manual indicates a rearend ratio of 3.92 with an optional 4.27. good luck in your search. there were two threads on this topic recently: mine on 9" specs and one on top speed. they should only be a couple of pages back.
good luck, dick r.
with 738 revs per mile that amounts to circumference (roll out) of 7.15 feet (note the decimal, not feet/inches). that would indicate a diameter of 2.28 feet (approx 28").
also, the manual indicates a rearend ratio of 3.92 with an optional 4.27. good luck in your search. there were two threads on this topic recently: mine on 9" specs and one on top speed. they should only be a couple of pages back.
good luck, dick r.
That gives me a lot of good info. I have the manual and as yet have not looked at the rear end but was counting on it having the standard 3.92. I'm looking to get 55 - 60 at approx 2500 rpm so as not to work the engine too hard.
again thanks, kmule
Post Fiend
Joined: May 2008
Posts: 7,641
Likes: 21
From: Poway, Ca.
The original tire diameter will vary with weight, inflation and wear.
What you guys need to do for an accurate reading from the RPM calculator is measure the "Roll Out" distance (circumference) of the tire. It will be right on the money if you do.
Here is a link to a discussion we just had about speeds, rear end ratios, and the wheels/tires. Read my pst #6 to get the roll out distance.
https://www.ford-trucks.com/forums/8...-look-for.html
And as a refresher, here is the link to the Gear Ratio Calculator:
http://www.et-studios.com/motorsports/gears/gears.html
What you guys need to do for an accurate reading from the RPM calculator is measure the "Roll Out" distance (circumference) of the tire. It will be right on the money if you do.
Here is a link to a discussion we just had about speeds, rear end ratios, and the wheels/tires. Read my pst #6 to get the roll out distance.
https://www.ford-trucks.com/forums/8...-look-for.html
And as a refresher, here is the link to the Gear Ratio Calculator:
http://www.et-studios.com/motorsports/gears/gears.html
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