The 1947 - Present Chevrolet & GMC Truck Message Board Network - Front brake flexi hoses fitment change thru model year?

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- - Front brake flexi hoses fitment change thru model year? (https://67-72chevytrucks.com/vboard/showthread.php?t=685570)

J1MMY

10-17-2015 05:48 AM

Front brake flexi hoses fitment change thru model year?

I've been looking for replacement flexis and I've noticed that some outlets list '73-'78 and '79-'87 differently. Was there a change in thread pitch or from UNF/UNC to metric?

('79 C10)

ray_mcavoy

10-17-2015 08:42 PM

Re: Front brake flexi hoses fitment change thru model year?

Yes, I believe that was right around the time when GM changed from standard to metric threads on the banjo bolts that attach the flex lines to the calipers.

The earlier banjo bolts have 7/16"-20 threads while the later ones are M10-1.5.

J1MMY

10-24-2015 11:37 AM

Re: Front brake flexi hoses fitment change thru model year?

Then it would appear that I have one of each - 7/16-20 on the left...

http://i6.photobucket.com/albums/y23...psadfmy30u.jpg

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