Late 1965 Corvette Power Brakes: Change From 3/16" to 1/4" Brake Lines

[Ray K.]

Just curious and since there's no mention of the late power brake change in 6th edition of the Corvette Technical Information Manual & Judging Guide (chassis, page 184 & 185), and/or AIM (ref: UPC J50, pages 1 -3), would anyone "by chance" know the approximate date that the 1965 Corvette power brakes were changed from the 3/16" brake lines to the 1/4" brake lines?

Ray K
NCRS Member #43777

[Donald L.]

Re: Late 1965 Corvette Power Brakes: Change From 3/16" to 1/4" Brake Lines

I had a 65 Coupe many years ago that was around serial number 22,000 with power brakes it had the 3/16 lines still in it so if they ever did go to quarter inch lines it was in the last couple weeks of production

[Stewart L.]

Re: Late 1965 Corvette Power Brakes: Change From 3/16" to 1/4" Brake Lines

22880 July 15 car has 3/16.

[Ray K.]

[Ray K.]

Re: Late 1965 Corvette Power Brakes: Change From 3/16" to 1/4" Brake Lines

Stewart,
Can you let me know the date codes are on your power brake booster and master cylinder? And if possible, send / attach pictures?
Thanks.
Ray

[Stewart L.]

Re: Late 1965 Corvette Power Brakes: Change From 3/16" to 1/4" Brake Lines

Ray,
the original Master cylinder had been replaced when I purchased the car but the original 3/16 brake lines were there. I believe it to be the original booster, it has a julian date code of 113.