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sleeper_stang_2000 · 06-10-2003, 10:56 AM

Guys, if you haven't opened up the upper intake plenum on your 4.6 engines you gotta get it done! There is a whole lot of room left in there and the walls are rougher than pavement! You will notice a difference.

06-10-2003, 10:56 AM	#1
sleeper_stang_2000 Registered Member Join Date: Mar 2003 Location: south florida Posts: 45	porting upper plenum on 4.6..A MUST Guys, if you haven't opened up the upper intake plenum on your 4.6 engines you gotta get it done! There is a whole lot of room left in there and the walls are rougher than pavement! You will notice a difference. __________________ 2000 GT Coupe Automatic! CAI, X-Pipe, Eibach Pro, 100 Shot NOS Best run: 12.187 @112.9 w/ 1.75 60ft. 3ft Above Sea evel