Header tube for 327-350

[GTX JOHN]

If we are not doing steps we run 1 3/4 Primary 34 to 36 long and a merged
collector if budget allows....That is on both High and Low Comp. 340 Mopar
in Stock (E to G). I would generally expect a similar class 4 Brl. 350 to be
in the ball park with those numbers (Similar compression/Valve Size/HP/Wt.).