I am eventually going to swap a 5.0 into my 86 V6 T-Bird. My car has an in tank fuel pump. Is it possible to just swap a V8 pump for the V6 pump or is there more involved? This is going to be a stock 5.0 used for daily driving. Thanks.
Here's what I did:
I bought a gently used 255lb/hour Walbro from a guy on the Corral that was parting a Stang. (This one was one of the good older Walbros that rarely gave a problem)
Anyway, I dropped my tank, pulled the pump assembly all apart, and removed the stock pump..just the pump itself, not the whole shebang and swapped in my Walbro. Buttoned it all up, and that was 2.5 trouble years ago....now if I could just sort out my other issue....
Anyway, the bigger question you need to address is are you ever going to have any performance mods later on? If so, I'd not consider anything less than a high quality 190lb'er, at least. (Stock is 90lb, and that's for an HO car, stock '88 Tbird for example had a 60lb pump, IIRC). This isn't something you'll just get off the shelf at the local parts jobbers either, not if you want it to last more than a year or 2500 miles. Some will argue, but I've had no good luck with any electric fuel pump from a warehouse parts store. (Oreilly, Autohole, Napa, etc)
Just my opinion. Look around on Corral and your local craigslist for Stang guys selling their fuel pumps...look for the guys doing upgrades. Know some Stangbanger swapping on a turbo or nitrous system? He/she just might also be getting rid of a f/p and stepping up in that area. I got lucky, paid 23 bucks shipped for mine ;)
Put a good pump in that will handle your future needs. No problems. I use a 255 lph pump now. I used a 190 with the 5.0 SO engine.
I replaced my stock TC pump with Walbro 255lph unit about 4 years ago, thinking I was gonna do the HO swap in my TC.
And lest we add some room for doubt...a 255lbh pump will NOT hurt anything if everything else on the car is and will always be stock. The only real reason I bought mine was because A it was cheap, and B, I knew my stocker wasn't going to last much longer, and I was right. Took about an hour and half...have yourself some good jackstands, a nice level smooth place, and a buddy to help ya wrestle the tank back up. Even empty, they're a bit of a pita because they're bulky and odd shaped. Mine made one hell of a difference in power after I got it put in.
Do yourself a favor and get the tank as EMPTY as you possibly can. I used a large shop floor jack with a transmission cradle adapter on mine. I had it removed and re-installed in about 20 minutes. More than likely you are gonna struggle more with rusted bolts getting it out and then getting it re-aligned when putting it back in. To help with the re-alignment, I used four plumb bobs off of the corners of the tank and marked the floor prior to taking the tank out. putting it back in was as easy as aligning the plumb bobs with the alignment marks on the floor and matching the angle of the bottom of the tank.
ANOTHER reason I am glad I made the access panel in the trunk.
There is a difference in the HO & SO pumps, but I doubt there is any between a 3.8 & SO...
Everyone beats their chest about having a 255Lph but is totally unnecessary on anything but a all out modified, and/or boosted engine... I doubt the stock lines fuel & rails will even begin to flow 255Lph...
Just get get a 255lph pump its a upgrade and youll know you have an upgraded fuel pump down the road if you plan on more hp. Thats what i did when my stock fuel pump hose cracked. And the 255's arent that much more expensive than A 190 or 155 pump.
I got my 255 because I found a killer deal that was even cheaper than a basic stock replacement from Autozone.
^ same thing. I did mine more for reliability than power increases,but it left the door open for stuff later on, if I ever get past this spell...if not, it will go in the Stang for when I start that project the first week after never..lol
This is another item I wanted to ask about so when the time comes to do the swap I am prepared. i just wanted to be sure that a bigger pump can be swapped onto the factory hanger. It will be an HO 5.0 so the least it will have is a 190lph pump. I will keep an eye out for Mustang guys selling their unwanted parts. I am not keen on the parts store pumps either. The reliability is not the best.
Hey Vinnie, lets see a picture of your access panel to the fuel pump in the Sport. I worked at a couple of import dealers over the years and a lot of their cars have access panels to get to the fuel pumps. Makes it a lot easier.
Thanks for the input everyone.
what pump would an 83 5.0 have in it?
The cfi motors jave two pumps, one lift, and one high pressure. I'd personally swap the lines and go 86-88 tyle, but it a bunch of work, especially if parts are rare (such as australia I assume...)
When me and mt buddy did his, the first was a cheapie "airtek" that didn't even throw30psi and made all kinds of noise. We ordered a "performance" pump from orileys, and it had a walbro stamp on it. I belive it was 110lph or however they rate it, and was only $10 more then a stock replacement one.
Yeah, finding lines is out of the question, i think i'll look at making some up.
hopefully i can put a decent pump in tank using the CFI pump bracket.
The pump will fit the factory hanger fine, might have to use zip ties, might not. I think the access panel was an idea that was sped by ford if you go in your trunk and feel on the carpet on the passenger side there is a hump and that is directly over the fuel pump. Cut that out and put in a latch system and you got yourself an access panel that in my opinion seemed like it should have been there from the factory.
The pump in the T-bird/Cougar has a larger diameter than the Mustang/Mark VII pump. Aftermarket pumps are the same diameter as the Mustang. When I bought my 155lph Walbro I was able to purchase it with a rubber sleeve that fit the T-bird pump bracket. Unfortunately I don't remember where I got it from. A new pump will bounce around in the stock T-bird rubber sleeve as it is a thinner diameter than the stock T-bird pump.
Have you heard of worm clamps!!! That is how i mount most of these pumps. Tie raps are a very bad IDEA. I will see if i have some photos of my PUMP MODS!!!
I do not have to many photos of pump mods. But here i am retro fitting a fuel pump from an early S10 Blazer to fit a SAAB. The SAAB pump is obsolete and the replacement unit is TELEPHONE NUMBERS. So here is a chevy pump in a late model SAAB. Worked great
(http://i28.photobucket.com/albums/c209/tfalconier/IMG_0367.jpg)
Holy shiznit, Tom, you really ARE Italian! I just got about a half a dozen ideas in my head about what you sound like when you talk! Lol!
Tom, if I were the owner of said Saab, I'd upgrade too...the vehicle, that is. LMAO.
Yeah, zip ties in a solvent? Not such a good idea. Of course, most are polyethylene, so they may hold, but I'd use a clamp if need be.
I would probably use the worm clamp too. I wouldn't have to worry about them coming loose or falling apart. Interesting to know the Mustang and T-Bird had different size pumps.
Hey Tom, I bet that Saab gives you plenty of business. LOL!
YOU BET. Between coil packs at 400.00 each and 7 UP DATES . Mass Air flow meters and whatever you can shake a stick at. You have to have ROCKS IN YOUR HEAD WHEN A CRANK SENSOR CODE REQUIRES CHANGING SPARK PLUGS!!!! The car is a piece of . But it is a money MAGNET FOR US!!!
OK FOE how about this one.
(http://i740.photobucket.com/albums/xx46/proguns/001-74.jpg)
Saab: Job security.
Around here, we raise bigger field mice than that, lol.
J/k, he'd do alright for some taco meat and some steaks ;)
I know i am waiting for the BIG ONE.
The turbo coupes use the smaller pump like 5.0 Stang, even has same numbers on them...
255 and call it a DAY!!!!
Hmm I did not know that. Thanks for letting me know. Now I wonder why Ford would go through the trouble of using two different pump sizes.....
The pump I swapped in came with a new rubber mount that fit perfect in the stock hanger assembly. No hose clamps involved (minus the small short hose to the line).
Maybe two different suppliers for the pumps?
Smaller bigger longer shorter makes no difference. Mount the 255 any way you see fit and game over. I have modifies several cars to use the 255 even HONDA cars we build. As long as they pump the engine could give a flip how long or short or fat or skinny the pump is. WHEEEEEEEEEEEEEEEEEEEEEEEEEE!!!!!!! Thanks!!!
not all the cfi's had dual pumps, I believe only the duraspark setups (box fox and up to 84 i believe) had dual pumps. even my late production 84 had one pump in the tank,, oddity but just sayin
dont buy cheap,, get zip ties made by "Panduit",, they feel / look / bend and literally sound differently. Reisistant to UV/solvents and heat or cold.
Found at Grainger or Graybar,, and you will pay. I buy them in packs of 1000 for 75$
i agree,
one could get off much cheaper with a 1990 so 3.8L super charge mercury cougar pump and these pumps fit right in the OEM hanger. The sock is a tiny bit different but can be modified to accept your oem sock.
The sock on our pumps restrict flow though ,, pay attention to the ID of nipple fitting on the pump and you will see that the lines are about 20% larger than the output of the pump.
Supercharger 3.8L pumps are about 95LPH, the Bosch is approx 65.
the name of the game is to have flow and psi, and over time our oem pumps bushings and brushes wear reducing the flow. .. so... you want to put in a pump that "after" it starts to wear out, its meeting the min requirements of your injectors demand.