Ned, I have the same issue with my Rock Valley tank, but only when it's over 3/4 full and it only slightly drips. What I did for now is to put a fairly sizeable fuel filter in the vent line, pointing upright and as high as possible under the car to collect most of the fuel "puked" out of the vent. I also bent some hardline and ran the vent all the way back to the bumper just by the license plate so when it does puke it does directly down to the ground.
The real solution that I'll fab up this winter will be to install another vent on the filler neck and run both vents to a small surge/overflow tank hidden up behind the bumper that is above the level of the fuel tank; it will catch and collect the fuel that comes out of the vent and allow it to drain back to the tank via one of the two vent lines. There will be a vent on the top of the surge tank obviously. A small surge tank, even 1/2 quart capacity should do the trick.
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1969 Chevelle
Old setup: Procharged/intercooled/EFI 353 SBC, TKO, ATS/SPC/Global West suspension, C6 brakes & hydroboost.
In progress: LS2, 3.0 Whipple, T56 Magnum, torque arm & watts link, Wilwood Aero6/4 brakes, Mk60 ABS, Vaporworx, floater 9" rear, etc.
Last edited by Blown353; 04-28-2008 at 08:40 AM.
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