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Old 11-23-2009, 06:33 PM
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Default Stroker kit for 5.9 cummins

Well a while back i seen freedom diesels ad in one of the papers and it had a stroker kit for a 5.9 cummins and said make the torque equivalent to a 7.1 or 7.3 (i cant remember which). So i got really curious about this and i called freedom diesel a little bit ago and talked to Isaac. He said that the kit wasn't supposed to be in the ad i saw, and it was accidentally put in. But he said they did do a few, and that they aren't doing them anymore because of liability. He said they changed the crank (for a different crank throw to make a longer stroke) and He said they changed the pistons too and he said they usually bored them a little too so it would end up to be like a 6.5 or 6.6 with it bored and stroked. I'm not sure if they change the rod or not, he didn't say, but i'm guessin they do. He said that they sold it as a kit and said you had to do some machining to the motor to get it to work (I'm not sure exactly what) but he said that some of the guys he sold them to didn't do the machining and it didn't work out for them causing a liability issue, so thats why he said he's not doing them anymore. He said it did give more horsepower, but mostly more torque with the longer stroke. He said it gave about 35% to 40% more torque. I asked how much this kit he sold cost and he said it was just around $2000 for it all, which in my mind actually isn't too bad, cuz technically thats a fresh rebuild with a bigger stroke and bore giving more powa!!![coffee][guitar] He said he knew of some other places that were startin to do stroker kits for the cummins and that some were even doin them without having to have the motor machined, and some not even having them have to be bored out. He couldn't remember the phone number of this place off the top of his head, but he said that they are out there and I am searching!!! I think it would definately be cool to try and would be rare! With my truck being VE pumped,(and i would like to stay VE pumped) It would definately help me out so i could compete with the newer trucks. How many have heard of this? and does anyone know where else i could get a kit? I've looked around and haven't been able to find any.
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Old 11-23-2009, 06:40 PM
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I saw that ad too...If i were you i'd just swap a p-pump on and go from there. The way they come from the factory have been proven for big numbers and proven is worth more than experimentation IMO, just my 2 cents
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Old 11-23-2009, 06:52 PM
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Well i'd like to stay VE pumped because someday i wanna get the most power out of a VE pumped 1st gen. I think there is only a few that have made it over 600hp. You just have to know us 1st gen guys. We get creative and it is like a sin if we go p-pumped or get another truck or motor. So i would like to stay VE, or i've even thought about dual VE's...but we'll see.
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Old 11-23-2009, 06:58 PM
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Yeah I know...my dad has a 1st gen. I just go the way of easier more reliable power. I'd like to get the most power on a vp too but after having two take a dump on me its p-pump time lol
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1990 W250 currently in pieces. 215 pump swap, hx35/40 over s475, Contagious Diesel 5x0.014's with some work, Contagious Diesel Comp DV's, AFC modifications, Dual feed, Fire Ring head with some heavy porting, 60# springs, ARP 2000s, airdog 150, 3 piece manifold, Nitrous by NX, Currently building a 47rh, and lots of Autometer gauges
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Old 11-26-2009, 10:30 PM
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I like the idea but i too am with the tried and true method of keeping the stock crank and rotating assembly and getting it balanced!
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Old 11-26-2009, 10:39 PM
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IMO it would be a waste of money, stick with the 5.9 its tried and true and the motor is more than capable of taking 1000HP on stock rotating assembly. I mean dont get me wrong it could be a cool idea, but why waste money on something that isnt needed.
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