Stroker 340>416 Build Advice
So I got the Howard's 711133-08 cam to utilize the .700 lift capability of my trick flow 190 heads with 1.6 ratio rockers but after looking at LS cams with larger lobe separations and intake center lines I'm thinking I could have gotten the same power out of a custom cam grind with a better operating range, with 10.5:1 dished pistons I'm wondering what this cam will be like on the street. I'm running Proflo4 EFI, TKX wide ratio 5-speed with 3.23 gears and 275 45 17, I'm not interested in doing any low speed driving but I also want to be able to cruise at 2000 RPM in 5th gear on the freeway without having drivability problems. Has anyone run this particular combination or can tell me what I might expect? I want to utilize all the potential power this can make but I don't want it to be undriveable on the street.
The narrow centerline helps low speed torque.
A dyno would be required to maximize torque down low.
After the header pipes come to the collector point, maintain the collector diameter for as long as the dyno reading shows a higher low rpm torque output.
Ideally speaking, after this length is found, you would want to use a pressure wave cancellation box that maintains the same height as the collector pipe and is of as many cubic inches as the engine for each pressure wave cancellation box for the drivers and passenger side.
The shape should be a done but a straight up rectangle is fine. At the exhaust end of this box, connect the rest of your exhaust. Inside the rectangle box, floor to ceiling and about 1/2 the length of the box at most install (weld in) walls to help direct the exhaust out into the rest of the system.
From there, at a minimum, use a muffler that has the same size diameter pipe as the collector. For further sound cancellation, add a glass pack, of the same or larger diameter as the collector pipe.
This does two things, the pressure wave cancellation box mimics exhaust exiting open air exhaust exiting (like a dyno) and the muffflers somewhat there supposed to do, glass packs do it further for you.
The pressure wave cancellation box maximizes torque (& HP) and the rest is sound deadening. Use the best flowing muffler possible for power everywhere.