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Original Message
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| RE: port matching - how important? |
| By KarlJay - 11/03/2000 10:40:51 AM; IP 64.24.177.89 |
The Streetmaster 390 needs some work. I have that intake right now and have spent several hours doing the mods and matching the ports. It's not all that hard, basically remove the intrusion into the plenum just under the carb base at each of the corners, those 1/2" bumps that are about 1" down from the carb base. The second area is the end of the runners. I used clear wax paper to trace a pattern from the heads and matched that to the runners to find where to remove material.
I got some info from Edelbrock that was posted on the other FE forum, I'll try to attach it here.
As to how important this is, a smooth, easy flowing intake will help with power and torque. It makes it easier for the engine to do it's job and you can gain MPG at the same time, depending on how bad it is now. Those bumps just under the carb base are not good, it causes the air/fuel to make a awkward turn, big smooth curves are best. Don't forget to check the gasket for intrusion into the path. |
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This thread, so far...
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