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Need to install Pulley pump on 98 GM 305

Discussion in 'Fisher Engineering Discussion' started by UpstateNYer, Sep 29, 2009.

  1. UpstateNYer

    UpstateNYer Member
    Messages: 30

    I purchased a MM1 setup to install on my 1998 Chevy K1500. The plow had been on a 91 Chevy and was utilizing a pulley pump off the damper. I have been told that you cannot have a pulley pump on anything newer than a 1995. Is this true? If not, can anyone tell me the part number to install on my 1998. If I cannot fabricate this pump to work I would like to use a Monarch pump mounted under the hood. If I use that setup can I still use the valve block and controls from the pulley pump setup?
  2. NHresident

    NHresident Senior Member
    Messages: 304

    Sorry man its true there 2 different motors urs a injected vortec,The donor was just a tpi,Fisher doesn't make pullys for Vortecs.Its not the pump bracket retroing.It's that theres no pully for the crank to power the pumps hydraulics
    Last edited: Sep 29, 2009
  3. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Fisher most certainly did have belt driven hydro's for the Gen1 Vortec engines although you may have a tough time sourcing the pulley unless you can find a dealer with some obsolete inventory.

    Here's the paper work for your setup. 7551B
  4. UpstateNYer

    UpstateNYer Member
    Messages: 30

    All good info!

    Thanks for the replies. I think between the two setups I am contemplating, I will be able to retrofit a good working setup. I am leaning toward a rework of the existing power steering pump with new lines and I will purchase the stand alone reservoir from Fisher. This will allow me to use the valve setup and controls (Mechanical) I already own. By utilizing the Chevy power steering pump I avoid having to fabricate mounting brackets and/or the purchase of a electric clutch pump. From elsewhere on this site I was able to download a schematic for new hydraulic lines to replace the stock power steering lines. The flow will go like this: Pump to Power Steering to valveing to reservoir to Pump.