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05-19-2003, 12:04 AM
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Gentleman Jim Driver
Join Date: Nov 2002
Location: Poulsbo, WA
Posts: 1,554
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A couple things:
The 1.25" rotors were available at least from 81-87, My uncle's 81 has them and my 87 has them. The option codes that get them are JB5 and JD5 for gas and diesel (vacuum vs. hydroboost) respectively. There doesn't seem to be any options required to order the heavy duty brakes, but you must have heavy duty brakes to order the heavy duty front springs (F60). All trucks that had cruise control had to have power brakes (J50) or the heavy duty power brakes that we are talking about.
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Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '87 C10, '87 R30, 2 '89 R3500 Flatbeds |
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