View Full Version : Ecotec Blockprints ...


Jmc007
08-26-2007, 02:43 AM
http://tunersource.gmblogs.com/Racer-Tech/ECOtec-Tech-Topics/BlockPrints.pdf

Jmc007
08-26-2007, 09:15 PM
Guys just look at the exhaust port size vs the intake port size, merely 80% more area on the intake size ...