You will need to install a different speedometer drive gear, (19 tooth) at the other end of the cable, where it goes into the tailhousing of the transmission.
DD
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| Author: | Shrug64 [ Sun Jun 12, 2011 1:36 pm ] |
| Post subject: | Original tire size |
What was the original tire size for 13" rims? Thanks. |
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| Author: | emsvitil [ Sun Jun 12, 2011 1:59 pm ] |
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6.50 13 About 24.7" diameter and 6.50" total width. Fit on 13 x 4.5" rim The radial tire of correct diameter is a 185 80 13 (but it's wider). The 185 tires are very hard to find now. Best bet is to goto 14" rims. Use a 185 75 on the 14 x 4.5 and 195 70 or 205 70 on the 14 x 5.5. |
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| Author: | FrankRaso [ Tue Jun 14, 2011 7:32 am ] |
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If you don't want to change rims, Coker Tire still carries 13" tires in both 6.50-13 and P185/80R13 sizes. |
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| Author: | Shrug64 [ Tue Jun 14, 2011 9:48 am ] |
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Well I found a 175/70/13 at Pep Boys. 4 tires mounted and balanced only 255.10! |
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| Author: | Joshie225 [ Tue Jun 14, 2011 10:12 am ] |
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Quote: Well I found a 175/70/13 at Pep Boys. 4 tires mounted and balanced only 255.10!
Did you consider that those are 2" shorter than original?
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| Author: | FrankRaso [ Tue Jun 14, 2011 11:24 am ] |
| Post subject: | |
You would need to switch from a 17-tooth speedometer gear to a 19-tooth gear to keep your odometer & speedometer accurate with a P175/70R13 tire. Tire Upgrades |
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| Author: | Shrug64 [ Tue Jun 14, 2011 11:48 am ] |
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I have no idea how to do that. How much difference could it really make? |
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| Author: | FrankRaso [ Tue Jun 14, 2011 12:41 pm ] |
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Using the P175/70R13 tire should make your odometer record about 11% more miles than actually traveled. At an indicated 60 mph you would actually be traveling at about 54 mph (if your speedometer was still within calibration). |
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| Author: | Shrug64 [ Tue Jun 14, 2011 2:47 pm ] |
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Well that is the closest tire I can find. I guess reading a little slow is better than reading a little fast. At least I will never get a speeding ticket. I would not even begin to know how to adjust my speedo. |
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| Author: | Doc [ Tue Jun 14, 2011 3:49 pm ] |
| Post subject: | |
You will need to install a different speedometer drive gear, (19 tooth) at the other end of the cable, where it goes into the tailhousing of the transmission. DD
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| Author: | Shrug64 [ Tue Jun 14, 2011 4:44 pm ] |
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Where would one get such a thing? |
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| Author: | FrankRaso [ Tue Jun 14, 2011 7:19 pm ] |
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I got my 16-tooth pinion gear from Brewer's Performance. |
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| Author: | Joshie225 [ Tue Jun 14, 2011 7:32 pm ] |
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You still have the original trans in the car? If so it's a different gear than the '66+ models. The selection for the earlier speedometer drive gears is more limited and they cost more. |
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| Author: | Shrug64 [ Tue Jun 14, 2011 9:03 pm ] |
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It is the 727 that came with the car originally. |
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| Author: | Shrug64 [ Tue Jun 14, 2011 9:07 pm ] |
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So is this what I need? http://www.brewersperformance.com/prodd ... ?prod=SP19 |
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