4cyl conversion question.

[RsStanG1987]

Im swapping a 93 coupe from a 4 popper over to a carbed v-8 I was wondering if there was a way to use the stock fuelpump or should i just use an electric pump?

 

[Celeb]

Some will say you can use an adjustable regulator with a return but in my book if the regulator ever fails, sending EFI pressure to the carb...well that will be no fun. Blow the needle off the seat, spray gas out of the fuel bowl vent tubes like old faithful. My old roommate did a similar project and he just used a holley red pump, no regulator required.

There's plenty better pumps, I'm just saying something of the like.

Either that, or slap a mechanical pump on the timing cover and call it a day.

 

[RsStanG1987]

so use a holly red pump? what do i put in the fuel tank?

 

[Celeb]

When you pull the fuel pump out, you have to either fabricate the tank's pickup or buy one like this

 

[RsStanG1987]

where is that one from?

 

[Celeb]

Summit

Granatelli Motor Sports GM-TI7998 - Granatelli Motor Sports Fuel Tank Pickup Assemblies - Overview - SummitRacing.com

or you could do this:

View attachment 240860

 

[Rick James]

Or sump your tank,run a line to the filter,then to pump then all the way up to your reg underhood.Thats what i had on my 90 notch that was carbd.Easy ,clean and effiecient.

 

[RsStanG1987]

Summit

Granatelli Motor Sports GM-TI7998 - Granatelli Motor Sports Fuel Tank Pickup Assemblies - Overview - SummitRacing.com

or you could do this:

View attachment 240835

any idea what to do with the return line on that one?

 

[Celeb]

You can use it if you're going to use a return style regulator. Mine is just plugged.

 

[RsStanG1987]

Can you tell me how you plugged it and how you setit up?

 

[Celeb]

I bought mine like that granatelli one and a rubber cap on the unused one like these and I used a worm clamp to make sure it didn't pop off.