Speedmaster intake porting. Hopefully I can make something out of this

oldkimmer said

Idk how old it is. It was a trade deal that was good for both of us. This carb has 2 1/8 throttle blades. A 1050 and 1150 have 2 inch blades. I suppose a smaller carb may help but maybe not. I don’t want to be cutting, welding and grinding for a few extra horses. This engine is a 543 11-1 compression. .625 lift solid roller. Kim

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It’s not always a horsepower thing. You may just be outside of measurable error on HP on a dyno, but in the car transient response may be huge. Any time you force air to change directions you lose energy. The tighter the change, the more loss.

The rule of thumb is no more than a 7 or 8 degree change. That means a standard 30/45/60 valve job is bending the air about double what the air will tolerate. Plus most of the cuts are under .100 wide so there isn’t a bunch of time for the air to bend.

That rule of thumb applies anywhere in the system. Add fuel to the air and the air doesn’t bend as well.

It’s all about shape. And some of it is not measurable on a water brake dyno.