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For the new DHRA heads up class next year:
You can run up to 2 turbos(any size), NO nitrous, and NO propane. The truck must weigh 15# per cubic inch or 5500#, which ever is greater. So I could weigh 6045#.
OR
You can run one turbo(any size), WITH nitrous, but NO propane. The truck must weigh 16.5# per cubic inch or 6200#, which ever is greater. So I could weigh 6650#.
Right now with a 1/4 tank of fuel my truck's race weight is 6600# without the spare tire and tailgate. A second turbo or a bigger single turbo isn't much of an option right now on the Duramax.
So, should I lighten the truck up 500# (which is do-able) and run my current set-up or should I add nitrous to what I have now? I can get a good ammount of smoke by stacking boxes so I'm thinking a mild shot of nitrous (50-100hp) to clear up the smoke would add some decent power without having to worry about o-ringing the heads.
Right now I'm running 12.8's at almost 104mph with the stock turbo, stock injectors, stock fuel system, without nitrous or propane, with just computer tuning, intake(airbox) & exhaust (muffler) mods on the motor. Anyone think the truck would be faster with the current setup weighing 500# less or at its current weight with a mild shot of nitrous?
Bigger injectors and a bigger shot of nitrous would make even more power but I would have to o-ring the heads for sure and I'm not ready for that yet...
You can run up to 2 turbos(any size), NO nitrous, and NO propane. The truck must weigh 15# per cubic inch or 5500#, which ever is greater. So I could weigh 6045#.
OR
You can run one turbo(any size), WITH nitrous, but NO propane. The truck must weigh 16.5# per cubic inch or 6200#, which ever is greater. So I could weigh 6650#.
Right now with a 1/4 tank of fuel my truck's race weight is 6600# without the spare tire and tailgate. A second turbo or a bigger single turbo isn't much of an option right now on the Duramax.
So, should I lighten the truck up 500# (which is do-able) and run my current set-up or should I add nitrous to what I have now? I can get a good ammount of smoke by stacking boxes so I'm thinking a mild shot of nitrous (50-100hp) to clear up the smoke would add some decent power without having to worry about o-ringing the heads.
Right now I'm running 12.8's at almost 104mph with the stock turbo, stock injectors, stock fuel system, without nitrous or propane, with just computer tuning, intake(airbox) & exhaust (muffler) mods on the motor. Anyone think the truck would be faster with the current setup weighing 500# less or at its current weight with a mild shot of nitrous?
Bigger injectors and a bigger shot of nitrous would make even more power but I would have to o-ring the heads for sure and I'm not ready for that yet...