What is the stroke on a 400 crank?
What is the stroke on a 400 crank?
Internal Dimensions. General Motors achieved the 400 SBC engine’s displacement by increasing the bore to 4.125 inches and the crankshaft stroke to 3.75 inches – actual displacement is just over 400.9 cubic inches. In contrast, the Chevy 350 CID engine uses a bore of 4.00 inches and a stroke of 3.48 inches.
How big is the bore on a Chevy small block Stroker?
As you can see, unless we stretch the bore spacing of our original small block, it will be difficult to increase the bore much beyond about 4.155-inches (0.030-inch overbore on a stock 4.125- inch bore) for most production blocks. The reason for this is the cylinder walls become much too thin to remain stable at high horsepower and torque output.
How much does a small block Stroker cost?
You want to think about the entire system and how each of these components will work together to make good power. Displacement is all about bore and stroke. With a good steel stroker crank and quality big-bore pistons, you can assemble anywhere from a 406 to 440ci small block for around $2,000.
What’s the ” best ” SBC bore / stroke / displacement?
Re: What’s the “best” SBC bore/stroke/displacement? 4.00″ bore and 2.750″ crank for a short stroke, high revving small block that’ll spin to 10,000 RPM. Put it in a lightweight Nova or something similar and go road racing.
How big is the stroker on a Chevy 400?
This is the largest stroker combination available for the Chevy 400, using a 4.000″ stroke to achieve 434 cubic inches of displacement. This configuration will be more bottom-end heavy than the others, with less emphasis on top-end power. Great for applications where high RPM aren’t quite as crucial, such as in street/strip vehicles.
As you can see, unless we stretch the bore spacing of our original small block, it will be difficult to increase the bore much beyond about 4.155-inches (0.030-inch overbore on a stock 4.125- inch bore) for most production blocks. The reason for this is the cylinder walls become much too thin to remain stable at high horsepower and torque output.
You want to think about the entire system and how each of these components will work together to make good power. Displacement is all about bore and stroke. With a good steel stroker crank and quality big-bore pistons, you can assemble anywhere from a 406 to 440ci small block for around $2,000.
Re: What’s the “best” SBC bore/stroke/displacement? 4.00″ bore and 2.750″ crank for a short stroke, high revving small block that’ll spin to 10,000 RPM. Put it in a lightweight Nova or something similar and go road racing.
This is the largest stroker combination available for the Chevy 400, using a 4.000″ stroke to achieve 434 cubic inches of displacement. This configuration will be more bottom-end heavy than the others, with less emphasis on top-end power. Great for applications where high RPM aren’t quite as crucial, such as in street/strip vehicles.
