88turbomajor
Joined:
Jun 2020
Creedmoor, NC
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I'm looking at getting a Tbird Sport 5.0L and it comes with 14inch tires. I want put 16 inch snowflakes on her and was wondering if I have to do anything else (speed gear change?) I don't know. Thanks!
1984 Mercury Cougar 5.0L LS Silver/Gray
(New 5.0L long block with E7 heads, HO cam with Flowmaster Super 10's)
Previous: 1988 Turbo Coupe
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BradM
Joined:
Dec 2020
Barrington, Illinois
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It depends on what tire size you select. This tool will give you speed changes. https://tiresize.com/calculator/
1965 Mercury Comet Caliente; 1968 Mercury Monterey; 1969 F100 Ranger; 1982 Mustang; 1987 Thunderbird Turbo Coupe; 2017 Police Interceptor
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88Slowbird
Joined:
May 2019
Tampa, FL
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225 / 55 / 16 will equal out to about the same as the factory 215 / 70 / 14 and will make the speedo almost spot on
1985 TC 5 Speed: Pro 5.0 Shifter, Big R Stage 1 T3, 3 Inch Downpipe, Stinger FMIC
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It's not hard at all to change the speed gear and they don't cost much. I think you'll find that you'll likely end up staying close to the stock size anyway but I wouldn't let changing the speedo gear keep me from running a tire I wanted.
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88turbomajor
Joined:
Jun 2020
Creedmoor, NC
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(01-25-2022, 12:53 PM)spittinfire Wrote: It's not hard at all to change the speed gear and they don't cost much. I think you'll find that you'll likely end up staying close to the stock size anyway but I wouldn't let changing the speedo gear keep me from running a tire I wanted.
Thanks! I'm still looking but everyones input has been very helpful!
1984 Mercury Cougar 5.0L LS Silver/Gray
(New 5.0L long block with E7 heads, HO cam with Flowmaster Super 10's)
Previous: 1988 Turbo Coupe
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88turbomajor
Joined:
Jun 2020
Creedmoor, NC
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(01-24-2022, 05:28 PM)88Slowbird Wrote: 225 / 55 / 16 will equal out to about the same as the factory 215 / 70 / 14 and will make the speedo almost spot on
Thank you Slowbird. Easy peasy there.... That'll work!
1984 Mercury Cougar 5.0L LS Silver/Gray
(New 5.0L long block with E7 heads, HO cam with Flowmaster Super 10's)
Previous: 1988 Turbo Coupe
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88turbomajor
Joined:
Jun 2020
Creedmoor, NC
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(01-24-2022, 04:42 PM)BradM Wrote: It depends on what tire size you select. This tool will give you speed changes. https://tiresize.com/calculator/
Thank you. I didn't know that resource was available.
1984 Mercury Cougar 5.0L LS Silver/Gray
(New 5.0L long block with E7 heads, HO cam with Flowmaster Super 10's)
Previous: 1988 Turbo Coupe
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