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  1. 89-93 Powertrain
    I have a 91 d250 non ic 5spd, and i top out at maybe 75 on the freeway stock. I was wondering what options i might have in order to get a better max speed and lower rpms if possible? I just dont want to be gunnin it the whole way. I have a THD pin and 3200 gov spring ready to install
  2. 89-93 Performance Parts Discussion
    Attached are photos of the fuel pin off my 91 NI truck 4x4 727 . The make of the pin is unknown to me as the PO installed it and it has no stamp on it. Upon adjusting the starwheel I noticed it had a nylon bushing on the top near the threads, I didnt see a reason for it so I removed it. My...
  3. 94-98 Powertrain
    Looking to advance the timing from stock. what is the recomended amount? I have some ppump modifications like 0 fuel plate, rack cap, afc slid forward, 3k governer springs, and some other stuff. I just want a daily driver but with some pretty good power and good smoke.
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