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

54Caddy · 03-20-2018, 02:00 PM

My concerns are really for the fuel pump having to draw the fuel up the stock line in sending unit then down to pump. Also as stated with a carburetor you have fuel bowls which are little reservoirs for fuel. With EFI you do not have that, A GM TBI unit can’t compare it only requires 15 psi not the 60 the efi requires. I’ve read a few people wanting to route the same way you are and landed up putting bungs on bottom of tank.

03-20-2018, 02:00 PM	#51
54Caddy GM Addicted Join Date: Jan 2009 Location: Visalia, Ca Posts: 2,291	Re: Install thread- Holley EFI Sniper on '72 402 big block My concerns are really for the fuel pump having to draw the fuel up the stock line in sending unit then down to pump. Also as stated with a carburetor you have fuel bowls which are little reservoirs for fuel. With EFI you do not have that, A GM TBI unit can’t compare it only requires 15 psi not the 60 the efi requires. I’ve read a few people wanting to route the same way you are and landed up putting bungs on bottom of tank. __________________ ..Mac’s Garage.. 73 GMC, 54 Caddy, 2010 Silverado, 68 C10 RIP DAd My 73 GMC Truck Build Pic 2010 Silverado 4/6 on 24s IG:MacsGarage