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JasonG · 09-10-2011, 08:05 PM

To clear up some of the above,
Draw a line from where the tires hit the ground at 16deg. Don't hang nuthing there.

Normal thinking is stop the air dam level with the lowest hanging thing under there. Probably the bottom of your axle.

Self drilling sheetrock or lath screws go right through heavy truck bumper steel too !

I'm working on a similar dam here : http://ecomodder.com/forum/showthrea...dam-18663.html

09-10-2011, 08:05 PM	#45 (permalink)
JasonG Master EcoModder Join Date: May 2009 Location: Charlotte NC / York SC Posts: 728 05 DMax - '05 Chevrolet 2500HD 90 day: 18.48 mpg (US) Thanks: 120 Thanked 56 Times in 52 Posts	To clear up some of the above, Draw a line from where the tires hit the ground at 16deg. Don't hang nuthing there. Normal thinking is stop the air dam level with the lowest hanging thing under there. Probably the bottom of your axle. Self drilling sheetrock or lath screws go right through heavy truck bumper steel too ! I'm working on a similar dam here : http://ecomodder.com/forum/showthrea...dam-18663.html __________________ I can't understand why my MPG's are so low..........