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Old 09-03-2012, 10:08 AM   #11 (permalink)
oil pan 4
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Join Date: Jul 2011
Location: NewMexico (USA)
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Sub - '84 Chevy Diesel Suburban C10
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90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

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Quote:
Originally Posted by MTrenk View Post
This will create a low pressure under the car.
But I want to create slightly lower pressure under my suburban. One of the problems with these trucks is cooling. On 2 wheel drives its worse, if you get at bumper level and look under there you have a cross member that catchs about 6 inchs of air and forces it up into the engine bay.
Air cant really go around the bottem of this cross member becaus its got a 1.5 inch lip around the bottem. like an "L" cross section that scoops up the air, so air has to go up into the engine bay.
I want to block the air flow over this massive low hanging cross member and pull more air through the radiator.
And also by cutting away some of the body that covers the radiator, I can gain about an additional 3 inch by 15 inch strip of radiator fins exposed to flowing air, I will have much better cooling.
And yes I know tons of unneeded air flow over the radiator is bad for Cd that is where the active grill shutters come in.

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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.
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