I was able to get a reducer fitting with a copper washer from a brake and clutch specialty shop in Seattle. Now I can just attach my existing quarter inch hardline with 7/16 fittings.. this is the one hardline that is actually in great condition because it goes under the transmission and was coated with grease and dirt to keep away rust. I’m making new lines for all the other hardlines and the copper/nickle 3/16 rolls of hardline are so easy to bend and form!
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Last edited by 51 Jimmy; 06/09/2026 4:38 PM.

1951 GMC with positive ground. Engine is a ā€˜54 Chevy passenger car (Serial Number 0024472F54Z) with a ā€˜56 head (casting code on top of head 3836848 GM 4), Casting Code (on passenger side on side of head B56 848 850)