Now, from what I've been told a 96 Corvette fuel pump will fit a Fiero (drop right in) no mods required. Is 96 the only year that will work? Will all LT1 vette pumps work? If not why only the 96?

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1985 Chevy Camaro Iroc-Z LT1/L98
1986 Pontiac Fiero SE 2m4 - The project begins
1988 Nissan 200sx SE VG30E - The beater

I'm not saying you're talking about the right pump because I don't know, but AC/Delco says the '96 LT1 pump fits the Corvette from '92-96, Buick Roadmaster '94-'96, '95-'96 Caddy Fleetwood, and a few others.

John Stricker

quote Originally posted by FieroGTT: Now, from what I've been told a 96 Corvette fuel pump will fit a Fiero (drop right in) no mods required. Is 96 the only year that will work? Will all LT1 vette pumps work? If not why only the 96?

quote Originally posted by jstricker: I'm not saying you're talking about the right pump because I don't know, but AC/Delco says the '96 LT1 pump fits the Corvette from '92-96, Buick Roadmaster '94-'96, '95-'96 Caddy Fleetwood, and a few others. John Stricker

What he said.

'96 Corvette pump, and everything that cross-references with a '96 Corvette pump.

alright....finally, thanks alot guys.

I don't recall axactly which little pieces I used, but the combination of parts present with what comes with the new pump and the Fiero gas tank can put everything together.

Did you use a new pump from GM or aftermarket?

When I did my 3100SFI swap I took everthing from the 94 Olds, even the pump and it droped in. I dont think it will do a V8! but it works good for the 3100.

I'm doing a 4.9 turbo build-up on a 4 banger car. Although Pete is using the stock v6 pump succesfully since I have to change it anyway I might as well just play it safe and get the vette pump made for 300hp.

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My Website
1985 Chevy Camaro Iroc-Z LT1/L98
1986 Pontiac Fiero SE 2m4 - The project begins
1988 Nissan 200sx SE VG30E - The beater

i just did my fuel pump.. definitly invest in a new strainer. its $5 dollars..

also you may want to clean your fsu while your in there.. mine didnt work so i fixed mine.

basically.. take a torx head driver and remove the 2 screws.. take off teh springs.. becareful not to loose anything.. sand down teh springs until they shine.. or wire brush them.. then take very very fine sand paper.. and ther will be a part on teh blue plastic part that has wire wrapped around it.. remove it and sand the wires in the direction they are going on all 4 sides.. then sand down the copper needle.. till it shines and bend it up slightly.. reassemble everything and move the float and keep your ear next to the assembly you should hear the copper needle run along the wire. spray it down with contact cleaner.. and test it using a multimeter on the ohm setting to see a varialbe resistance as you move the float.

you might as well clean everythign up while you have it out of the car. and i would replace the rubber fuel lines also.. but thats just me..

ohh yea dont mix up the fuel lines.. 3 are teh same size..

also i was told that alot of aftermarket fuel pumps are wired backwards which means ur pump will just be blowing bubbles... u can test ur pump with a battery and a bucket of water.. watch it pump out the water.. and then run it out of the water till it is dry.

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How easy was the acutal swap its self. I've done them before on 3rd gen F-bodies and boy are they a ***** . You have to drop the exhaust and the fuel tank and niether is fun. With the corvette pump would I use the stock fiero FSU or the corvette FSU? I'd assume the fiero unit but stranger things have happened.

I can guaranty that the 96' pump is plug and play. I put it in my car. The base is slightly different than the fiero's but fits just fine. I am one for overkill so I also put a nylon wire tie around it and the return line. You can leave the fuel dampened in place or replace it with a small piece of fuel line. I left it in with no problems and I am running 55 PSI. It only absorbs the pulses of the pump and is not a regulator. Physically the pumps look the same on the outside, but if you look in the bottom you can see the Fiero has a plastic impeller and the vette one is stainless steel. The vette one also seemed heavier. The vette strainer is exactly like the fieros except it has a nylon mesh inside to keep it from collapsing. The GM part number for the pump is 25163464 and is 85.52 through gmpartsdirect.com I don't remember the strainer number, but I can look it up if you like. After-market should work just fine as well. Just tell the parts guy you need a pump, and stainer for a 96 vette LT1 v8

The tank is a pain to drop, I also cut the wires and put in a trailer wire plug in case I ever have to do it again. It is very hard to line up the O-ring on the pump and sender when the tank is on its side under the car. I found that out the hard way and had to drop the tanks again the next day.

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LS1 v8 T-Top 87 GT

http://ls1swap.tripod.com/

Thanks for the info. So I just need the pump and strainer, no sender, right?

Correct you used the original Fiero sender. The pump mounts in the sender bracket. The Fiero strainer will fit the vette pump but I would get a new one. GM saw me coming when I purchased the vette strainer at my local dealer. It cost me $26 if I remember right. I can't find the part number.... I have it somewhere but where I do not know. Like I said before dropping the tank can be a pain there isn't allot of space for removing and hooking up the hoses. And if yours is like mine the nuts to the straps that hold the tank in place are rusted.

yea the bolts on the straps of mine were also rusted.. i syphined the tank first to get out most of the gas so it wasnt so heavy.. after that i got the 2 big hoses off.. using a screwdriver.. meantime i sprayed some penetrating oil on the bolts on teh straps cuz they were rusted pretty bad. i removed the front strap first.. then teh second strap.. lowering the front first will stop from gas spilling all over you.. after that i removed the 3 lil hoses and marked them so i dont get them mixed up.. when i goto put the straps back on i think im going to use some white lithium grease so the bolts will go on easier..

took me about 2 hours to do.. but i had a big ass hangover from a party the nite before. and gas fumes with a monster headache dont go good together...

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Hey there...

I swapped out the pump on my 4cyl for the V6 pump. I haven't heard of any V6 pumps failing yet, so I just went with stock replacement. Also, I'm not looking for extreme power from this, just stock 4.9 demands.

I don't remember what year your car is, but if its say an 84, you may want to upgrade the size of your tank too. I put in the bigger tank from a later year GT and put in a new pump, then threw that baby back up in my 84. Especially with the V8, I reccomend it. If you want a hand with things, like usual, just lmk. Later man!

Thats a good question. What are the flow and pressure differences between the 2 pumps? When I eventually delve into the project (porbably around spring break or so) you can be sure you'll be on speed-dial! I haven't been at Ross' shop for few weeks. How did the body work go?

AFAIK, the LT1/4 and 2.8 use the same fuel pressure. As for flow... Who knows? The Corvette pump was used with the LT4 engine, rated at 330 HP, but closer to 350 in reality. I don't know how much higher it goes, but you could probably find out on a Corvette forum somewhere.

As far as pressure/flow rate comparison between stock V6 pump and Corvette pump; I posed this question to GM insiders some time back, response I got was "They both perform the same pressure and flow rate". I've never come across any other information that says different.

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Click to Listen!

California, I spoke with someone whos very reputable and honest about the pumps when I was big into the nitrous. He also told me that the pumps performed just about the same when he tested them.

I know that you switched, but also know the 6cyl pump didn't fail you.

quote Originally posted by Jncomutt: I know that you switched, but also know the 6cyl pump didn't fail you.

Yep, picked up the high flow Holley unit from Summit (still working great). There was a Corvette unit in my car before I bought it, it failed, and they replaced it with the stock V6 pump for the same reason we stated above. The stock unit never did fail (was high heat thermal short in the MSD 6A unit).