How can I increase power to my Detroit 11.1L S60 (350 HP rated) Series engine
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by ivesti, May 29, 2021.
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Rideandrepair and Swine hauler Thank this.
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Can get over 500 out of 11.1 with program and turbo
lwlevens and Rideandrepair Thank this. -
Rideandrepair and jamespmack Thank this.
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No a DDec2 is a prom. Programmable read only memory. Its a chip like early gm cars and trucks. Your early GMs with the computer controlled quadrajet is DDC software. You actually can interface with a laptop and adjust and control the carb. Except no one had laptops back then. If you wanna spend the money, you can do neat stuff with them. But now it's still old tech.
DDec3/4 is Programmable.Rideandrepair, Swine hauler and Big Road Skateboard Thank this. -
Rideandrepair Thanks this.
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@jamespmack - I found the guys, will definitely give them a call, thank you.
The engine again is year 1997 11.1L and the ECM is actually a DDEC 4 from a 12.7, it's just rated at 350 HP.Rideandrepair and jamespmack Thank this. -
The cylinder stroke for the 11.1 is 5.47 in (139 mm), while for 12.7 is 6.30 in (160 mm).
That would mean that I would also have to change the crankshaft to a 12.7 one?
The cylinder bore is the same on both engines: 5.12 in (130 mm).Rideandrepair Thanks this. -
If you put a different crankshaft in and you have a longer stroke what will keep the Pistons from hitting the valves?Rideandrepair Thanks this. -
He will get you safely more power. Your not gonna get 500. His work is proven. You will be happy.Rideandrepair Thanks this.
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