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11-24-2018, 01:28 PM
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#1 |
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Registered User
Join Date: Sep 2014
Location: Warwick , Warwickshire, England
Posts: 79
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Rotors, 1" or 1.25" ?
Looking to get a drop kit for my 1977 GMC 15 in the black Friday sales but it is asking me if the rotors are 1" or 1.25"". Is there a way I can tell without having the truck here (its on its way to the UK but I haven't got it yet)
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11-24-2018, 01:39 PM
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#2 |
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Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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Re: Rotors, 1" or 1.25" ?
thing is you can upgrade but its inner bearing & race if i recall correctly / rotor / caliper / possible hose if you get the 1.25 and only have the 1.0 thick rotor .
i just checked www.rockauto.com and in 77 if it was baby inline 6 / 292 inline 6 or 350 thay all show only a 1.25 rotor for new thickness spec . not saying there 100% correct or your truck is 100% original . hope this helps you make a choice .
__________________
77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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11-24-2018, 04:55 PM
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#3 |
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Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,140
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Re: Rotors, 1" or 1.25" ?
Not enough detail to know for sure.
Need to know either the brake system (JB3 or JB5) or the GVW rating. K
__________________
Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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