Urgent- Are Code J55 HD Brakes 1.25" - The 1947 - Present Chevrolet & GMC Truck Message Board Network

8t5Silverado · 03-12-2004, 03:00 PM

I need to know 'cause I am about to order some spindles and I don't have access to my truck.

Thanks for your help.

beaterC10 · 03-12-2004, 03:14 PM

I know option JB5 brakes use the 1.25" rotors

8t5Silverado · 03-12-2004, 03:16 PM

This is J55 for sure, and it's on an '85, if that makes a difference.

I wish I had just measured the rotors...I kept putting it off.

beaterC10 · 03-12-2004, 03:39 PM

Do you know what size the rear brakes are? If they are 2 3/4" wide on the rear and no one has changed anything, the rotors will be 1.25"

8t5Silverado · 03-12-2004, 03:44 PM

I don't know for sure. I never measured.

Since the buildsheet said HD brakes, I always assumed they were 1.25" rotors.

8t5Silverado · 03-12-2004, 10:26 PM

Well, I raced home and pulled a wheel off of my truck.

Problem solved, they are 1.25" rotors.

Thanks.

03-12-2004, 03:00 PM	#1
8t5Silverado Mudslides 'r my specialty Join Date: Dec 2003 Location: STL Posts: 1,106	Urgent- Are Code J55 HD Brakes 1.25" I need to know 'cause I am about to order some spindles and I don't have access to my truck. Thanks for your help. __________________ Always on the lookout for old cars and parts...(20s, 30s, 40s, 50s, 60s, etc.) http://www.cardomain.com/memberpage/500339

03-12-2004, 03:16 PM	#3
8t5Silverado Mudslides 'r my specialty Join Date: Dec 2003 Location: STL Posts: 1,106	This is J55 for sure, and it's on an '85, if that makes a difference. I wish I had just measured the rotors...I kept putting it off. __________________ Always on the lookout for old cars and parts...(20s, 30s, 40s, 50s, 60s, etc.) http://www.cardomain.com/memberpage/500339

03-12-2004, 03:44 PM	#5
8t5Silverado Mudslides 'r my specialty Join Date: Dec 2003 Location: STL Posts: 1,106	I don't know for sure. I never measured. Since the buildsheet said HD brakes, I always assumed they were 1.25" rotors. __________________ Always on the lookout for old cars and parts...(20s, 30s, 40s, 50s, 60s, etc.) http://www.cardomain.com/memberpage/500339

03-12-2004, 10:26 PM	#6
8t5Silverado Mudslides 'r my specialty Join Date: Dec 2003 Location: STL Posts: 1,106	Well, I raced home and pulled a wheel off of my truck. Problem solved, they are 1.25" rotors. Thanks. __________________ Always on the lookout for old cars and parts...(20s, 30s, 40s, 50s, 60s, etc.) http://www.cardomain.com/memberpage/500339

03-12-2004, 03:14 PM	#2
beaterC10 Senior Member Join Date: Jul 2003 Location: Indianapolis, IN Posts: 1,277	I know option JB5 brakes use the 1.25" rotors

03-12-2004, 03:39 PM	#4
beaterC10 Senior Member Join Date: Jul 2003 Location: Indianapolis, IN Posts: 1,277	Do you know what size the rear brakes are? If they are 2 3/4" wide on the rear and no one has changed anything, the rotors will be 1.25"



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