HOTRODS & CLASSICS
EXHAUST TUBING SIZES
|
Engine Displacement |
H.P. |
Pipe Diam, Single |
Pipe Diam, Dual |
|
150-200 |
100 |
2.0 |
2.0 |
|
|
150 |
2.25 |
2.0 |
|
|
200 |
2.5 |
2.0 |
|
200-250 |
150 |
2.25 |
2.0 |
|
|
200 |
2.5 |
2.0 |
|
|
250 |
2.5 |
2.25 |
|
250-300 |
200 |
2.5 |
2.0 |
|
|
250 |
2.5 |
2.25 |
|
|
300 |
3 |
2.5 |
|
300-350 |
250 |
3.0 |
2.25 |
|
|
300 |
3.0 |
2.5 |
|
|
350 |
3.5 |
2.5 |
|
350-400 |
300 |
3.0 |
2.5 |
|
|
350 |
3.5 |
2.5 |
|
|
400 |
4.0 |
3.0 |
|
400-450 |
350 |
3.5 |
2.5 |
|
|
400 |
4.0 |
3.0 |
|
|
450 |
4.0 |
3.0 |
|
450-500 |
400 |
4.5 |
3.5 |
|
|
450 |
4.5 |
3.5 |
|
|
500 |
4.5 |
3.5 |
This information was supplied by Flowmaster. It's intended as a basic reference guide to give you an idea of the general exhaust-pipe size needed to balance the prevention of excessive backpressure while maintaining adequate exhaust-gas velocity.