Quote:
Originally Posted by IneedAZ
laynlo15
So, If you overdrive the 2650, you can pick up more TQ down low? All the blower stuff is a learning curve. I ran Nitrous for years in my different cars, this is a different animal.
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It's about spinning the blower in it's efficiency range. There is a reason why a 1740 makes gobs of torque down low and that is because the blower speed is high at lower rpm. The 1740 efficiency range is right around 10psi. Once you crank it up, it starts loose efficiency and create more heat.
2650 is not really even doing much @ 8psi under 5k rpm because the rotor speed is so low. That is why you see the power ramp up so fast and there is +90whp gain from 5k-6500rpm on the stock SS.
The 2650 will make a lot more torque low mid rpm with a smaller pulley, but it will easily run above what the SBE LT1 can handle to get there.
On a build where its being spun to 18+ psi, you will see the torque come way up.
To keep it in perspective. On a street car a 550/550 or 580/600 power curve makes for a fun little street car. With a DR you can manage that power. However when you step up the build and start making big power, ideally you don't want the torque matching the horsepower and linear power increase becomes more ideal. This is where the 2650 will shine along with maintaining low air temps.
I think Laynlo is mixed up between threads. My comments were based all on the fact were discussing a stock SS. The other thread was discussing 2300 vs 2650. The 2650 is better suited for high HP builds. Moderate builds the 2300 is plenty just like I said before in your thread.