How much HP can a stock LBZ CP3 handle?
Registered. You can get in the 650 to 700HP range but will need oversize injectors and some good dyno tuning with EFILive, and probably some other items like boost tubes and intercooler and maybe second CP3 pump.
Does a stock LBZ Duramax need a lift pump?
The GMC and Chevy Duramax pick-up trucks do NOT have a lift pump to supply fuel to the engine. From the factory, the CP3 injection pump is the truck’s only means of getting fuel from the tank to the engine.
How do I know if my CP3 Duramax is bad?
Crank the engine over until fuel begins to flow from the hose from the CP3 return. Empty the container out, then crank it over for 15 seconds. Measure the amount of fuel in the container. If it is more than 1.2 onces, the CP3 is returning to much fuel and is bad.
How much does it cost to replace a CP3 pump on a Duramax?
The cost of doing just the LML CP4. 2-to-CP3 conversion is about $3,500 for parts and labor. That might take the breath away from many Duramax owners, but compared to the $8,000-plus it costs should the CP4. 2 fail, it’s a bargain.
How much HP can a Allison 1000 handle?
Allison 1000, Six-Speed (‘07.5-’10) By the time the LMM-powered GMs hit the market, aftermarket tuning of the TCM had progressed enough to where the Allison could withstand 430 to 450-rwhp for extended periods of time—and 500-rwhp on occasion.
How much HP can a l5p handle?
And thanks to the efficiency of the Allison transmission it’s mated to, most chassis dyno tests reveal that 400 hp and 850 lb-ft successfully makes it to the ground right off the showroom floor.
Do I need a CP3 if I have a lift pump?
Cp4 or cp3, doesnt matter. You need to get that fuel from the tank up to the injection pump. If you’re wondering if a lift pump will prevent the failure of the cp4 the answer is no.
Should you put a lift pump on my Duramax?
Older Duramax models came equipped with a Cp3 high pressure fuel pump. This pump is generally considered to be more reliable but still needed a lift pump to support 520 -530 RWHP. You should install a lift pump if you just want to have the power there for fun, or if you have a dedicated competition truck.
How long does a CP3 pump last?
Cp3 can go a long time more than that. 150,000 miles is the average life span of a common rail injection system, not just the LB7. The nozzle tips erode over time and the fuel spray gets distorted, mileage drops, and over all performance weakens.
What happens when a CP3 pump goes bad?
There may be a surge at idle due to low or no fuel supply pump pressure to the high-pressure pump. Knocking can be heard if the actual versus desired are too far apart which may be a bad FCA or Fuel Control Actuator.
How long does a CP3 conversion take?
2 to CP3 typically requires about 16 hours, with most of that time spent removing parts to get to the pump that sits at the front engine valley.
How many miles is a LBZ good for?
Canadian LBZ A stock truck should get 350,000-500,000 miles without major engine repair.