Higher rpms

Sled-pulling, Drag results, Dyno results

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Higher rpms

Postby 89cumburb » Tue Feb 18, 2014 5:11 pm

Alright I'm lookin to hit some higher toms with my 93 cummins. I'm thinking the 4000s range other than a governor spring what will I need. I've herd that you need a balancer where can I find one and what size valve springs are suggested.
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Re: Higher rpms

Postby BC847 » Tue Feb 18, 2014 5:59 pm

Assuming you're planning on having some usable power at 4000+ rpm, the biggest obstacle you'll run into is the fact of the VE's fueling characteristics. It fuels hard in the low engine rpm. If you go into the Dyno Numbers thread in this forum board, you'll see it in the power plots. Most have rolled-off a lot by 2500 ~ 3000. Good power can be made in the upper rpm with the VE, but it typically comes at the expense of lower rpm power.

My mess has made 400+ HP above 4000 rpm, but at the same time, the torque was way down by then.


What do you plan on doing at 4000+ rpm?
David

1993 12mm VE Fueled W250 CC, Green
12.67 @ 103.35
Your basic farm truck ;)
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Re: Higher rpms

Postby 89cumburb » Tue Feb 18, 2014 7:10 pm

Honestly I'm not trying to go for a specific hp I'm just doin some work to it to see what it ends up with it I'm doing a twin set up I just want to have it hit higher rpms just to mess around with it up there the truck is kinda just for messing around.
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Re: Higher rpms

Postby The_Head » Sat Feb 22, 2014 8:41 am

Sounds like you'll just be making noise then.
1992 Dodge Power Ram 250 (sold)
2014 Dodge Ram 2500 Tradesman, RC, 4WD, G56, Traxda 2.5/1" leveling kit
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