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GM should have stuck with Allison
Allison is coming out with their new 9 speed medium duty transmission. It's been known about for quite a few years now but it's finally coming to market. I can tell you that it is 100% just like the current 1000/2000 series 6spd, of course with some added parts and a bit longer case. It appears...- buick455
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- Replies: 12
- Forum: Mike L's Trans Talk
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LB7 stand alone harness questions
Is the BCM needed to get a stand alone LB7 to start and run? I am making a harness just to get the engine to run on a stand but I wasn't sure if just turning off VATS in the ECM will be enough or will I need to wire in the BCM? -
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Ported heads and bigger valves
What gains/benefits have people seen running ported heads and bigger valves? Either factory ported heads like socal stage 1 and stage 2, eldelbrock, Wagler, ect... The question is more based toward a big single turbo truck for mostly competition. Do they seem to help spool up? Has anyone done...- buick455
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- Replies: 27
- Forum: Duramax Engine Building
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New 2019 5500 random ECM/TCM info
Just got a new 2019 5500 and figured some people might think some of this is interesting. It does not use a GM T87 TCM. It is using an actual Allison TCM and I have to assume actual Allison programming. It's shifting strategy seems quite different than a pickup. It appears to lock the torque...- buick455
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- Replies: 4
- Forum: Duramax Tuning, Logging, and Gauges
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Motortrend's 2020 Duramax vs 2019 Cummins comparison
Motortrend posts this (attached) in their comparison and the Ram still wins. They even say for someone towing heavy every day that the GMC is preferred. I mean it won EVERY single performance and braking test unloaded and loaded with a 20,000lb trailer! They allow the Ram to win off a theory...