67Fastbackfan
New member
Two questions:
1. I've been looking at some heads lately that have been ported . I see some that have full valve guide stems in the bowl, some that have been tapered, or some that have been completely cut off so they're flush with the port.
What are the opinions of doing them different lengths. Obviously the more you cut off, the more air can flow in and out, but are there negative issues that come with this?
2. Bronze valve guides. If you have no rules to abide by, are they worth it?
1. I've been looking at some heads lately that have been ported . I see some that have full valve guide stems in the bowl, some that have been tapered, or some that have been completely cut off so they're flush with the port.
What are the opinions of doing them different lengths. Obviously the more you cut off, the more air can flow in and out, but are there negative issues that come with this?
2. Bronze valve guides. If you have no rules to abide by, are they worth it?