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04-07-2004, 09:56 AM
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Registered User
Join Date: Feb 2004
Location: Atlantic Highlands, N.J.
Posts: 139
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Correct Speedo Gear ?
I know there are calculations for this, but to make it easier since my combination is not stock I thought someone may have the answer.
My 86 GMC came with a 700r4 and a 3.07 rear, and now it has a Turbo 400 and a planned 4:10 rear with a 28" tall tire. Since the trans speedo plastic gears are so cheap & easy to change I will take a good suggestion and give that a try. Thanks. Doug  
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86 GMC SWB, DK. BLUE, ZZ430,TH400, 4.11'S, HEADMAN CERAMIC HEADERS, WELD BILLETS, BFG 275 / 60 / 15, 325 / 50 / 15 DRAG RADIALS, FIBERGLASS COWL HOOD, B&M SHIFTER. MSD, MARCH PULLEYS / ALT. / PWR. STEER PUMP, BECOOL RAD., BILLET GRILL & GRANT WHEEL. |
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