The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Install thread- Holley EFI Sniper on '72 402 big block

**clay68c10** · 03-19-2018, 06:54 PM

In my previous 68, I ran a 454 with a hopped up GM TBI using the stock pickup tube and in-cab tank and it never sucked air. I ran the tank pretty low a few times just to see. It helps that it is such a tall and narrow tank.
My Caddy tank has similar dimensions but is flat under the trunk floor. I had to add a sump or it would suck air at anything less than 1/2 after I put efi on it.

03-19-2018, 06:54 PM	#49
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,882	Re: Install thread- Holley EFI Sniper on '72 402 big block In my previous 68, I ran a 454 with a hopped up GM TBI using the stock pickup tube and in-cab tank and it never sucked air. I ran the tank pretty low a few times just to see. It helps that it is such a tall and narrow tank. My Caddy tank has similar dimensions but is flat under the trunk floor. I had to add a sump or it would suck air at anything less than 1/2 after I put efi on it. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ