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*C-10 simplex* · 12-17-2012, 08:35 PM

No, i don't have any actual experience, but the subject intrigues me; You can take a decent car in fairly good shape and make it simpler and thus easier, cheaper and more efficient to maintain fix. This, in turn, makes the car very economical over the long haul.

My main concerns are:

1) What to do with the in-tank pump; This is one of my main reasons for switching back to carbs because i think diagnosing this and, if necessary, having to change the pump would be a major pain in the rump. Can we leave the tank in the pump and just not use it? Would this be a constriction in the line?

2) What are you going to use in place of the in-tank pump? Most of these vortec v-8's don't have the hole drilled for the mechanical fuel pump pushrod. Some of these blocks do, but if they do then will the cam have the lobe to drive the pushrod? If we are going to continue to use the in-tank pump then to me this defeats the whole purpose of switch back to carbs---might as well continue using efi.

3) a simple electric pump located outside the tank. i would recommend carter.

12-17-2012, 08:35 PM	#2
C-10 simplex Account Suspended Join Date: Dec 2008 Location: indisclosed Posts: 1,515	Re: 98 5.7 vortec efi conversion to a carb No, i don't have any actual experience, but the subject intrigues me; You can take a decent car in fairly good shape and make it simpler and thus easier, cheaper and more efficient to maintain fix. This, in turn, makes the car very economical over the long haul. My main concerns are: 1) What to do with the in-tank pump; This is one of my main reasons for switching back to carbs because i think diagnosing this and, if necessary, having to change the pump would be a major pain in the rump. Can we leave the tank in the pump and just not use it? Would this be a constriction in the line? 2) What are you going to use in place of the in-tank pump? Most of these vortec v-8's don't have the hole drilled for the mechanical fuel pump pushrod. Some of these blocks do, but if they do then will the cam have the lobe to drive the pushrod? If we are going to continue to use the in-tank pump then to me this defeats the whole purpose of switch back to carbs---might as well continue using efi. 3) a simple electric pump located outside the tank. i would recommend carter.