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No you can not buy an air dam or belly pan you have to make it.
The fog light hole block offs might be available off another GM truck front end, but you might have to make that too.
For somethingas big as a suburban dont do a belly pan, too much time, material and heat to reject coming off the engine and exhaust. A big air dam is the way to go, I put a 9 inch air dam on my old suburban and picked up around 1 full mpg.
The thing that disapates the rear low pressure sone is called a diffuser.
As stated, remove weight from the vehicle. Do you need that 3rd row seat? If no then take it out, thats up to 200 pounds right there. On a vehicle that size each 100lb removed will net a 0.1 to 0.2 mpg improvement.
Also do a search, just search "suburban", ignore "35mpg suburban" look for the poasts titled "my beast" and "86 suburban" I would link them but cant copy and paste with this tablet I use.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
Last edited by oil pan 4; 03-18-2014 at 02:53 PM..
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