408 Scat Stroker Kits
I am still a neophyte here.
This is from Performance Automotive Engine Math by John Baechtel
The chevy 350 is shown on the final picture.
It's $25 on Amazon, don't waste your time or money on the kindle one.
gearing and speed tools http://www.grimmjeeper.com/gears.html
Average piston speed calculations
Piston Speed in feet per minute = stroke * rpm / 6
3.58 * 6000 / 6 = 3,580
4.00 * 6000 / 6 = 4,000
Maximum Piston Speed in feet per minute = (stroke x pi / 12) x rpm
(3.58 * 3.14159 / 12) * 6000 = 5,623
(4.00 * 3.14159 / 12) * 6000 = 6,283
Now, the RPM is going to be different at the same speed with the 3.58" vs 4.00" rolling down the road I just picked 6000.
Now, from what I gather from the third page posted, and just thinking about it, I suspect that you want to keep a close eye on piston acceleration (the third page), the longer the stroke, the more severe the acceleration will be, and the more acceleration, the more stress on components like crank, bearings, rods, pins, and pistons. I suspect that whatever you can do to reduce those stresses on your engine components, the better off you will be for longer engine life. Especially for a street driven car.
It's midnight, and I have to get to sleep now. I don't have the energy at this moment to figure piston speeds for the same car speed with different length strokes and optimal gearing for cam, stroke, TC.
The more I read over this stuff, the more I want to stick to shorter stroke engines and higher rear end gearing. I know that there is a LOT more that needs to be accounted for, like torque converters, and bsfc, cam, timing, air pressure, density, temperature, humidity, et cetera.
-Aaron
I am still a neophyte here.
This is from Performance Automotive Engine Math by John Baechtel
The chevy 350 is shown on the final picture.
It's $25 on Amazon, don't waste your time or money on the kindle one.
gearing and speed tools http://www.grimmjeeper.com/gears.html
Average piston speed calculations
Piston Speed in feet per minute = stroke * rpm / 6
3.58 * 6000 / 6 = 3,580
4.00 * 6000 / 6 = 4,000
Maximum Piston Speed in feet per minute = (stroke x pi / 12) x rpm
(3.58 * 3.14159 / 12) * 6000 = 5,623
(4.00 * 3.14159 / 12) * 6000 = 6,283
Now, the RPM is going to be different at the same speed with the 3.58" vs 4.00" rolling down the road I just picked 6000.
Now, from what I gather from the third page posted, and just thinking about it, I suspect that you want to keep a close eye on piston acceleration (the third page), the longer the stroke, the more severe the acceleration will be, and the more acceleration, the more stress on components like crank, bearings, rods, pins, and pistons. I suspect that whatever you can do to reduce those stresses on your engine components, the better off you will be for longer engine life. Especially for a street driven car.
It's midnight, and I have to get to sleep now. I don't have the energy at this moment to figure piston speeds for the same car speed with different length strokes and optimal gearing for cam, stroke, TC.
The more I read over this stuff, the more I want to stick to shorter stroke engines and higher rear end gearing. I know that there is a LOT more that needs to be accounted for, like torque converters, and bsfc, cam, timing, air pressure, density, temperature, humidity, et cetera.
-Aaron
