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09-04-2009, 10:29 AM
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#1 |
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Registered User
 
Join Date: Jul 2007
Location: Ottawa Ontario Canada
Posts: 1,156
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1" vs 1.25" rotors
How does one know which one you have? is the only way to tell is to measure?
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09-04-2009, 10:48 AM
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#2 |
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Watch out for your cornhole !
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: 1" vs 1.25" rotors
Measure the thickness of the rotor. It's the only way to be sure.
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I'm on the Instagram- @Gearhead_Kevin Last edited by Tx Firefighter; 09-04-2009 at 10:49 AM. |
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09-04-2009, 10:59 AM
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#3 |
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Registered User
Join Date: Mar 2007
Location: Farmington, MN
Posts: 928
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Re: 1" vs 1.25" rotors
The rotor should say the minimum thickness on it. A 1.25" rotor will have a min. thickness over 1". I think it says 1.20" or something.
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I can still count my vehicles on two... wait three hands. |
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09-04-2009, 11:06 AM
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#4 |
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Gen III Power
Join Date: Sep 2007
Location: Hesperia CA
Posts: 318
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Re: 1" vs 1.25" rotors
Once you have seen the difference in the two you can tell just by looking at them.
But your best bet is to measure them or like mentioned above check for minimum specs. Bob
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---Bob--- '81 Long Box. 2005 5.3l Vortec and 2005 4L80e coming soon... |
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09-04-2009, 02:34 PM
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#5 |
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yeller
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,826
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Re: 1" vs 1.25" rotors
If your truck is a pre 81, you likely have 1.25" rotors. The 1 inchers were more of an 80's thing.
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Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale |
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09-17-2009, 07:23 PM
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#6 |
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www.73-87chevytrucks.com
 
Join Date: Dec 1999
Location: Birmingham, AL
Posts: 6,935
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Re: 1" vs 1.25" rotors
1" rotors were introduced in 1981 as the Low Drag rotors. Everything prior as Jeff pointed out are 1.25".
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Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com |
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