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BUSY BOLTERS Are you one?  The Shop Area
continues to pull in the most views on the Stovebolt. In August alone there were over 22,000 views in those 13 forums.
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7 members (TUTS 59, klhansen, 46 Texaco, BLUEMEANIE, RBs36, Gib70, Ponchogl),
562
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Global Mod,
Mod | | | Forums66 Topics126,777 Posts1,039,282 Members48,100 | | Most Online2,175
Jul 21st, 2025 | | | | Joined: Jul 2007 Posts: 33 New Guy | | New Guy Joined: Jul 2007 Posts: 33 | My 1954 has an 85/86 s10 t5 transmission (1352-145), and a 3.42 4wd s10 blazer rearend with 265/75/15 rear tires. My speedo is around 7mph off or so according to my GPS. What is the best way to determine the correct diven gear for my transmission? Thanks | | | | | Joined: Jan 2011 Posts: 90 New Guy | | New Guy Joined: Jan 2011 Posts: 90 | Is it 7 mph fast or slow, if its slow memory serves me right I went from 15 inch too 16 inch wheels on a Bedford CF Van and it read 6 mph slower than it really was . Mind you we where clocking it with my Triumph Bonneville Speedo and they are accurate as a sundial lol
1954 3600 With 1950's Powers of St Louis Utility Bed.
My truck | | | | | Joined: Sep 2001 Posts: 29,262 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,262 | j54, Instead of comparing apples top oranges (your changes to someone else's changes), and hoping to find a different driven gear to go with your existing drive gear (if these are even available and/or if they might might work together), why no obtain an adapter and get an exact correction for you set-up? http://www.speedometershop.com/ratio.htmlI took 10 measurements on 10 1-mile stretches of interstate. The Speedometer Shop used those measurements to provide me with an adapter gives me less than a 1% error. | | |
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