[Gearhead999]

SCHOONER,

It isn't necessary to run a 3/8 inch line for the engine combo you are going to be running. A 289 [4.6L] engine, 600 Holley, mild cam and build will have plenty of fuel from the 5/16 inch line. Also, just because the fuel tank will be bigger, doesn't mean that you automaticly need a larger supply line.

The larger fuel line is going to increase the "volume" of fuel that passes from the tank to the engine. Those 6 or so extra gallons aren't going to change that.

If you want to change the fuel line[s] to 3/8, by all means do it. You won't hurt a thing. But it is over kill for the engine you're going to run. Now....if it was a 428 cu.in. with an 850 cfm or dual 4-barrels....well that is something different.

Have a great day. Happy St. Patrick's day.