IDI vs. Cummins - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 07-06-2011, 02:17 PM Thread Starter
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IDI vs. Cummins

Since Brad talked about dropping chains, I figured I could here too. Granted, it's not about my own truck, but I have a question.

A friend of a friend has a 2500 12-valve Cummins and he hitched up to a fully stock IDI and got his rear end handed to him. Embarrassing to a guy who rarely loses these kinds of competitions.

I know Cummins builds a strong engine, and the IDI is a good engine too, but they usually have less power than a Cummins. Is it possible the gearings were different, leading to the Cummins losing? I ask also because the top contender in my truck choices has an IDI
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post #2 of 11 Old 07-06-2011, 02:21 PM
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Gearing and weight difference

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post #3 of 11 Old 07-06-2011, 02:23 PM
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Quote:
Originally Posted by acprimus631C View Post
Since Brad talked about dropping chains, I figured I could here too. Granted, it's not about my own truck, but I have a question.

A friend of a friend has a 2500 12-valve Cummins and he hitched up to a fully stock IDI and got his rear end handed to him. Embarrassing to a guy who rarely loses these kinds of competitions.

I know Cummins builds a strong engine, and the IDI is a good engine too, but they usually have less power than a Cummins. Is it possible the gearings were different, leading to the Cummins losing? I ask also because the top contender in my truck choices has an IDI
More likely the cummins had bad tires.
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post #4 of 11 Old 07-06-2011, 03:32 PM
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Back to back will tell you nothing.My pops half ton chevy will pull either of my trucks if hes quicker on the pedal.Not on blacktop but surely on grass or dirt.

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post #5 of 11 Old 07-06-2011, 03:36 PM
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Tug o wars are pointless

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post #6 of 11 Old 07-09-2011, 06:13 AM
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Tug o wars are pointless
+1...

Oh hell, why not:

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post #7 of 11 Old 08-17-2011, 01:57 AM
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a buds 87 6.9 idi with a 8ft plow in the bed in 4 wheel low pulled my 99 7.3.. my hubs are ****ed to hell so 4wd isnt even posible at the moment.. so i left the stroker in 2wd and tryed to pull him but didnt work so i just pined it and watched the mud hit the house that was 60ft away.. opps
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post #8 of 11 Old 08-17-2011, 11:16 AM
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At the end of the day everything is pointless besides driving from point A to B. I would never EVER hook up. I do drag race (and always have). That is pointless too. But I find it fun!

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post #9 of 11 Old 08-17-2011, 01:40 PM Thread Starter
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Thanks for the insight guys. I wouldn't risk a tranny or anything else major doing that, but my friends would...
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post #10 of 11 Old 08-20-2011, 11:12 AM
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Its all about gearing, weight, chain angle, and traction. You could have a 10hp Honda motor and with enough gears pull just about anything.

-Justin-
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