FFS 89-93 Fuel Pin and Governor Spring
FFS 89-93 Fuel Pin and Governor Spring - Fuel Pin, with no Gov Spring is backordered and will ship as soon as it is back in stock.
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FFS 89-93 Fuel Pin and Governor Spring
FFS 89-93 Fuel Pin and Governor Spring - Fuel Pin, with no Gov Spring is backordered and will ship as soon as it is back in stock.
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The Far From Stock fuel pin! Why?! Because we felt the need.
Made from 4140 and max hardened. This pin is properly cut to give maximum fueling, but not cut too deeply to allow the slide pin to slip past the O-ring. The pin is also cut with a "flat" ramp design, as opposed to the common "progressive" ramps. This gives a much smoother fueling transition and avoids unwanted smoke.
The 3200 rpm governor spring is a great option and will give your truck a big boost in usable rpm power.
3600 rpm is similar to more throttle response, more touchy feel to the throttle, but it’s not going to expand your power band much since it will be de-fueling and beyond air efficiency beyond 3000 rpm anyway. Your Cummins wants you to shift and keep it in its max torque range. 60lb valve springs are recommended.
4200 are very touchy with max throttle response and is there for a max performance application with supporting mods and goals.
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