My 89Zs fuel pressure is dropping off at 6000 rpm and I need an auxillary fuel pump. Any suggestions on brands and how difficult to install.

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355 10:1 , AFR 190 heads, LT4 HOT cam w/ 1.6 roller rockers, complete Superram intake, 58mm BBK TB, 24# injectors, screens out of MAF, MAT relocated, March underdrive pulleys, Streetdampner, Crane HI-6 ignition, 160 thermostat, K&Ns, TES headers(Jet hot coated), Mufflex 4' cat back, B&M shift Kit, 2500 converter, and 2.73s(soon to be 3.27s)

 

You can use the NOS #51763 or 51764

The second one flows more and also costs more.

There are a couple things you need to instal the pump.... This kit was designed fro 4th gen, but you can use these parts for tyou 3rd gen...

www.5150.org/nitrous/nos_kit_5176.html

Let me ask Guido what he needed for his 3rd gen install.....

[This message has been edited by Kevin G (edited September 21, 2000).]

 

The best way to run an aux pump is to run it off of ignition. Running it off of your factory fuel pump relay can kill the relay.

The only downside to that is that you cannot leave the key turned to ignition unless you unplug your inline pump.

i used the 51764 with my vortech. I bought a 4 wire relay that comes with the 4th gen NOS kit. ive got the wire assignments somewhere at home. But basically you run one to hot, one to ground, one to ignition and one to the pump. then ground the pump.

I also mounted it on the backside of where my seats are located. You will need to be crafty as well cutting fuel lines and getting them to slide over the inlet and outlet. It can get tricky.

if you want more advise, let us know

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-86 IROC
Vortech stuffed EFI 406 in progress
-=ICON Motorsports=-

 

For saftey, I would put the aux pump relay right next to the main pump relay. I would jumper the main relays trigger wire to the aux relays trigger terminal. This way the relays and pumps operate the same as stock.

 

why not just get a high pressure high volume in tank pump and do the swap--yes its a pain in the a$$ but so is mounting anything on these cars.got a 255lph high pressure pump new for 108 from a company in txno shipping or tax!

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1990 Trans Am,350 TPI(L98),WS6suspension ,bridgestone RE71's /245/45/zr16
paxton supercharger, alston sfc's,msd 6AL-BTM,
8.5 superconductor wires SLP 1-3/4 headers,duel cats,3"slp exaust, lakewood LCA's,T.B.Bypass
160 degree stat,alum driveshaft,fiberglass wing, secret mods

"if you cant win fair CHEAT"

 

I agree with blowen90ta...An intake pump will run quieter too!

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Black 90 IROC, L98, A4, 323 gear. SuperRamed 406 in the works!