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ddec3 cam in a ddec 4?

What are the advantage of using a ddec3 cam in a ddec4?

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Leigh, I've heard this question before but no one has ever answered! I have a DDEC 4 and would like to know the answer!!!!

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I guess its top secret information.As soon as I get my ddec4 back together with the stock cam I'll probably have 15 replies telling me why I should have used the ddec3 cam!

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And that is one truthful statement right there, folks!

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Leigh, Do you ever wonder why this site is dying? It's like driving into a strange town and asking for directions on your CB, you hardly ever get any response, usually when you do, it is some CB RAMBO!!!

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It really is too bad. The Truckers Report forum is the only one that is doing gangbusters, but it also has a huge batch of drivers and owners that seem to be stuck in the early 90's and think a lot of business stuff that got tossed about here is stupid.

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Well at least someone didn't reply with "shut up stupid!"-not yet anyway? hahahaha

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I believe the reason for using an older cam is that the newer ones were ground to reduce emissions, at the expense of fuel mileage.

I actually did something different when I in-framed my '97 DDEC III. It was originally a straight 470HP/1450 torque, and they told me that to make it a 500HP, all they had to do was reprogram the ECM... but... if I switched to a '98 cam (1st year for DDEC IV), it would up the torque to 1550. I did, and it's worked out great. Pulls great and got better MPGs as a 500 than it did as a 475. Couldn't really notice much difference in how it pulls, but it has always pulled good. I don't believe they'd changed the cams for emissions yet in '98.

I think the main thing you want is to be sure you use an earlier cam if you currently have a newer one that's ground for lower emissions...

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I used a marine cam in my ddec iv. Detroit part # R23552556 700 HP produces about 2300 ft/lbs torque. Works great. Also have marine injectors and custom tune ecm. Runs great. the thing pulls like crazy. Great fuel mileage. 7.56 mpg 90 day average on fuel gauges and we run 70 mph. Great shop in Breezewood PA can hook you up. I believe you can use this cam with stock injectors and ecm. They have to drill the bolt whole in the cam gear out so the bigger bolt can go through.

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Thanks guys.I wonder how much more HP & torque i can get if i use that marine cam with stock injectors & ecm? Its a 2000 ddec4.

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Call Painters Garage. Breezewood,PA 1-814-735-3131 you want to talk to Perry. He can tell you the best thing to do to it.

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Leigh Long will be eternally grateful.
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