Quote Originally Posted by scottyo View Post
This gets complicated. I'm finding tuned ceramic coated headers in three sizes:

1 3/4" tubes with 3" collector
1 7/8" tubes with 3" collector
2" tubes with 3" collector

Which will work best for my car, as described above, which is primarily street driven with an occasional display of speed (that's what the ticket said) kinda thing?
well when i built headers i allway built up to a tube size that was a base off hp of the engine for the job.a well built sbc 1 3/4 blown 1.7/8 to 2. bbc never any thing under 2 most all the time 2 1/8 any thing past 500 cid 2 1/4 to 2.3/8 it is better to be abit on the bigger size as it will not be to long when you may want bigger CID and more power so the 17/8 min the 2 would be better if you going bigger on cid