I just aqcuired a STC big cam 4 cpl 1185 I was told I could get this to 600 if I change the piston packs get the injectors reflowed and pump change to 250psi
big cam 400 cummins tricks
Discussion in 'Trucks [ Eighteen Wheelers ]' started by fullthrotle, May 10, 2007.
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Cummins "hexa fuel line kit". If dual fuel line is worth 25 hp, how much is this worth?
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Can that work on a 444 Lenny?
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Yea it sure looks cool
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V8Lenny what is that a mechanically injected M11 ? where is this truck at?
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I think you are both wrong and right,,,It depends on the cummins engine you are talking about a 5.9l 12 valve in a Dodge times on the injection pump,,,, a 855 Big Cam injection timing is set with the cam shaft follower boxes on side of block by changing gasket thickness [of course that takes into account that the top stop injectors are set correctly]
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You wont keep a Big Cam very long if your looking for too much horse power, a KTA was 1150 Cubic Inch and they couldnt stand 900hp, the key to turning a big cam up is all in the PT pump, the drill the ball out of the throttle shaft and there is a screw in it, turn it out like you are loosing it up, a quarter turn at a time, so you dont just screw it way out and blow the motor up, do a quarter turn and see what you got, also behind the plate there is another screw above the throttle shaft, it turns out too, its the aneroid, about 1 full turn will have it all way open, then on the back of the pump there is a peice that has four bolts in it, you take those bolts out and there is a spring, shims, and a button, change that button, to a lower number to increase fuel rate, and add shims to increase rpms and when you get done with all that you will have one bad machine if you do it right, or you will have a see through block in just a little while if you do it wrong!
Mountainmover, KB3MMX and 1989 Pete Thank this.
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