Building an inline 6 Chevy 250 engine
m |
(Add text) |
||
| Line 1: | Line 1: | ||
{{develop}} | {{develop}} | ||
==Introduction== | ==Introduction== | ||
| − | The Chevy inline 6 has been around in one version or another since 1929 until 1988 in domestic vehicles. The Gen 3 (1962-'88) straight 6 250 cid engine was brought out in 1966. It has a 0.280" longer stroke (3.53") and the same bore (3.875") as the 230 cid straight 6. | + | The Chevy inline 6 has been around in one version or another since 1929 until 1988 in domestic vehicles. The Gen 3 (1962-'88) straight 6 250 cid engine was brought out in 1966. It has a 0.280" longer stroke (3.53") and the same bore (3.875") as the 230 cid straight 6. It boasts a 7 main bearing bottom end- quite an improvement over the Gen 2 inline's 4 main bearings. |
== Some things to consider == | == Some things to consider == | ||
| Line 13: | Line 13: | ||
==Cylinder heads== | ==Cylinder heads== | ||
| + | Beginning in the mid-'70s, the inline 6 Chevy got an integrated intake cylinder head. This was a step in the wrong direction for doing performance mods- the intake being cast as part of the head means it would take too much work to remove it to be able to use any kind of 4-barrel carb. | ||
| + | |||
===Exhaust ports=== | ===Exhaust ports=== | ||
The Chevy 250 head has a "4-port" exhaust. That means two ports are siamesed and two are single port. This design, while fine for a daily driver or truck, leaves a lot to be desired for high performance work. | The Chevy 250 head has a "4-port" exhaust. That means two ports are siamesed and two are single port. This design, while fine for a daily driver or truck, leaves a lot to be desired for high performance work. | ||
Your Privacy Choices