fuel pump question for 88 model 5.3 ls swap
 

I'm about to do a 5.3 swap on a 88 Chevy Truck but I would like to keep the fuel pump in the tank if possible, has anyone ever done this if so what fuel pump is it that you used, part # or any suggestions would help, I don't think the tbi fuel pump will put out the pressure required for ls

Re: fuel pump question for 88 model 5.3 ls swap
 

I've done it. You just need to swap the in-tank TBI pump with a pump from an LS truck. It should drop right into the old hanger assembly.

A stock TBI pump won't work. They only run about 12 psi, and you need 58 with an LS

Re: fuel pump question for 88 model 5.3 ls swap
 

Wasted income is spot on. Your 88 is a return system that can be utilized again if needed.

Re: fuel pump question for 88 model 5.3 ls swap
 

AC Delco ep381 should be a direct swap. I used the same fuel pump for my 5.3/4l60e swap completed on my 1987 c10. It was a tbi driver also.

Re: fuel pump question for 88 model 5.3 ls swap
 

Ok guys the swap is going very smooth got the fuel pump in and ready to install it, cheap to not a bad price, what are you guys doing about fuel fittings I would like to keep the existing steel braided lines that are the but they both have male ends, what fittings work?

Re: fuel pump question for 88 model 5.3 ls swap
 

here is what i did on the fuel lines at the motor... kept the stock tbi braided lines under the truck... and used the ls fuel lines at the engine. yes its compression fittings, and no i have never had a failure with them. i use them on alot of pressure lines with no problem.

Re: fuel pump question for 88 model 5.3 ls swap
 

Where did you get that set up from?

Re: fuel pump question for 88 model 5.3 ls swap
 

Compression fittings work great for fuel system stuff. Used them many times, never a problem.

Re: fuel pump question for 88 model 5.3 ls swap
 

Is this pump strong enough for a 5.3?


PERFORMANCE ELECTRIC P988K Fuel Pump Module Repair Kit Info

Category: Fuel Pump


$37.79

Re: fuel pump question for 88 model 5.3 ls swap
 

Soild i would jsut get an acdelco ep381 there like 40 buxs on ebay and work great no guessing

Re: fuel pump question for 88 model 5.3 ls swap
 

any link to the $40 pump ?

Re: fuel pump question for 88 model 5.3 ls swap
 

Thanks Dave
I'm on it !!

Re: fuel pump question for 88 model 5.3 ls swap
 

http://www.ebay.com/itm/ws/eBayISAPI...861&rmvSB=true

I bought 2 of these... havent started swap yet but dont see why there would be any problems.

Re: fuel pump question for 88 model 5.3 ls swap
 

The most recent review for that pump says that "they didn't send me a 381, its an inferior Chinese generic replacement pump" ....so might be worth being a little careful.

Re: fuel pump question for 88 model 5.3 ls swap
 

Brew makes a good point ... doing a search on Amazon for the AC Delco part number brought up a fuel pump that looks nothing like the on in the ebay ad.

https://www.amazon.com/ACDelco-EP381...=1&*entries*=0

Re: fuel pump question for 88 model 5.3 ls swap
 

can you please share a link to a proper GM/delco picture of the fuel pump? I have not been able to find a gm/delco supplied photo to use for comparison against my actual ebay purchase mentioned above.

thanks

Re: fuel pump question for 88 model 5.3 ls swap
 

Re: fuel pump question for 88 model 5.3 ls swap
 

Well at least the box says ACDelco and it looks the same!!!
Good service from USPS