1979 308 GT4 GM Smog Pump Replacement? | FerrariChat

1979 308 GT4 GM Smog Pump Replacement?

Discussion in 'Technical Q&A' started by LT-1, Jan 22, 2006.

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  1. LT-1

    LT-1 Karting

    May 13, 2005
    238
    San Francisco
    Full Name:
    Robert
    I've done a semi-quick search this morning and came up short. Do any of you have a current part # for a GM smog pump to fit a 308 GT4, or a good aftermarket replacement?
    Thank you,
    -r
     
  2. matteo

    matteo F1 World Champ

    Aug 1, 2002
    13,748
    On a plane somewhere
    Full Name:
    Heir Butt
    The early 80's camaro and the early 80's Jeep CJ7 are a match. IIRC, there was a bracket or a mount hole that needed to be made or something along those lines.

    You might be better off getting a rebuilt replacement and turning your old one in as a core. ICP does this.
     
  3. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,932
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
  4. LT-1

    LT-1 Karting

    May 13, 2005
    238
    San Francisco
    Full Name:
    Robert
    Thank you very much.
    -r
     
  5. RJay

    RJay Formula Junior

    Jun 26, 2004
    261
    Colorado
    Full Name:
    Bob
    I had to pass emissions in colorado for a 78' GTS. I see from the service manuals that the GT4 and GTS are similar. I used the Part#7817815 from the manual which is supposed to be a GM part but I couldn't find it that way. I ended up just calling NAPA and the guy was able to cross to a NAPA #51-112. The pump costs about $60. The harder part was the pulley. I made a makeshift one from parts I had lying around. I also had to come up with the slotted bracket (junkyard). The pulley that they gave me a the junkyard was too large and I couldn't find a smaller pulley, hence the makeshift one. ALso, I had to fabricate a bracket to connect the hose to the rear of the pump. I made this out of a small flat piece of aluminum. Getting the hose to route to the left (as you face the front) diverter was a bit of a pain too. It took me a good afternoon with all the fabrication, etc.
     

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