brake and gas lines sizes

[terry_208]

IIRC several members have gone to Ni-co lines.  My questions are these does a larger size brake line result in less pressure at the rotor/drum?  What size brake lines have others used?

What size line is sufficient for a gas line?  This is for a medium RPM normal performance Small V-8.

Thanks for the replies.

[RICH MUISE]

I went NiCopp on both. I've never heard a discussion anywhere in the last 20 years about changing to a larger brake size, so I'm guessing it's just not needed or an improvement or it would be being done. My guess is you would be correct, lower or inadequate line pressure with a larger brake line.
I went 3/16 on the brake line and 3/8 on the fuel lines. 3/8 was standard on the Mark VIII donor car, supply and return.

[59meteor]

I also used Ni Copp for my fuel and brake lines. I used the factory size 3/16" for the brake lines, and increased the fuel lines to 3/8"  (from the factory 5/16"), since I have a fairly thirsty 428 Cobra Jet FE engine. For most small blocks, 5/16" should be adequate.

[terry_208]

Thank-you for the replies.