Subject: Re: Engine Dyno Predictions: by jsup on 2008/12/24 17:43:15
Quote:
CentralCoaster wrote: Here's what I'm seeing:
AFR Eliminator 195cc street heads (CNC'd) 490 hp @ 6000 rpm 480 tq @ 5000 rpm
Dart Pro 1 Platinum 200cc Heads
465 hp @ 5900 rpm 465 tq @ 4800 rpm
The power curves have the same shape, so I don't think anyone can argue the heads were mismatched to the application. Would be nice to see what difference the CNC work makes.
Nice that the heads made up for the low end losses of the larger cam.
Wes, you should clarify post 7 regarding the CNC work.
So....25 lousy HP at 5000-6000 RPMs even less under 5000, more like 10. I'd say the CNC work is good for all of that.
We should do a poll. How many people with our street driven cars ever spin up past 5000RPMs? Betcha not much.
We keep coming back to the same thing. For all practical matters, there wasn't really much of a difference. Period.
What's the difference how much bigger the port is going to be? If the port job provides more power who cares what the port size is. Another example of arguing from an AFR bias. Is the goal power or port size?
