[parish8]

Does anyone use boost up top to maintain tq to redline?

Assuming no detonation and that timing isn’t too advanced can we assume tq is a good representation of load on the rods, pistons, head gaskets, transmission...?

if so and your looking to get the most out of a given set of parts would it make sense to add boost in the upper rpms to maintain tq? Keep tq flat right up to your redline.

another way to ask the question is you have your typical tq curve and a flat boost curve and you want more power. Is it safer to add some boost everywhere or add more boost but just up top to get a flat tq line? Below is a pic of a couple of runs. Different boost levels so they are not comparable but the blue run shows what I am asking about. What if I let the boost creep up on the red run to hold tq at the peek level rather than letting it taper off?

[LT1ornothing]

You are making me want to turbo the camaro so bad Parish...

[KingLT1]

I like what you are doing here. And I think it would be easier on the bottom end to bring the boost in gradually opposed to just let it hit and hold.

[Choda]

Yeah, esp if you are using the hard part limits as your redline. If your rods can hold 700ftlbs at 5k, why not try to keep it at 700 ftlbs all the way to 7k. If your turbo doesnt start choking or you have a fuel limit... your idea makes sense.

I believe the guys setting all the sbe records did something similar. They kept all the power out until after peak torque. This allows high hp with less strain on parts.

[wolfdog]

[parish8]

Here is an example of what I am talking about. The blue has a flat boost curve with tq of 728. The red has a rising boost curve with rpm but with a lower peek tq of 712.

in both cases the car will shift at ~7500rpm and probably fall back to about 6400.

if peek rpm stays the same and peek tq is less does the red graph actually stress the motor less?