If it's a 74 motor it's a dual port. Dual (2 intake ports, 1 for each cylinder) or single (1 intake port for 2 cylinders) refers to the intake side of the head, the intake manifold splits into 2 pipes near the head on dual ports. The exhaust is the same either way.
" said I never had no use for one... never say I didn't know how to use it"
lol i probably heard the name wrong mabye it glass pack..idk but i love it. now i just gotta figure how to fix my backfire i scare the people behind me haha.
i would love to come to meetings th problem is wed is my bussyest day i almost never have a free wed night.
i am very interested in the camp trip . also my bro is about to get his first bug this week!
Here's the difference between at Dual Port and a Single Port heads:
This is a Single Port intake manifold:
This is a Dual Port intake manifold:
Jim Kikuchi
1964 Karmann Ghia coupe
B.L.T.N. (Better Late Than Never) late model VW Club (San Jose/Santa Clara, CA): http://www.bltnvw.com NorCal Aircooled Group (NAG): http://www.nagvw.com