1FastS197
Senior Member
okay, so me and my brother are in a debate about 3V's vs. 4V's... he says that the 4V flows more CFM's than a 3V... i say it depends on how big the vavles are! lol... so what do you guys think?
Really depends on who you ask as different shops flow cylinder heads differently. On the INTAKE side the 3V uses a slight larger set of valves and a better velocity port. CFM wise....the 3V wins that one.
The exhaust however.........4V due to two valves instead of one. Although the 3V exhaust port isn't bad at all.