C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Stock air filter box replacement 1986

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Old 02-11-2014, 10:30 AM
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1986-z51
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Default Stock air filter box replacement 1986

Any good ideals for replacing the stock air filter box on my 1986. I have done a bunch of mods an wondering if is a restriction now.From what i have found it flows 631 cfm an 657 with cut lid. Mods include.

355 cu 9.5 comp
180 brodix heads
comp cam- 260 272
.499 .493
1 5/8 Headers 2 1/4 w cross over [no cats]
24 lb injectors
Tpis big mouth intake
AM&S runners.
48 mm throttle body.
Tune by pcms for less.
Old 02-11-2014, 10:44 AM
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ThomasRetUSN
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I bought a new modified air box from Eckler's but a lot of guys modify their box. It's up to you.
Old 02-11-2014, 11:21 AM
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c4cruiser
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Breathless Performance still shows their C4 "Vortex Ram Induction" intake as being available.

This system installs in place of the OEM intake and you cut a hole in the flat panel in front of the radiator/condenser where the OEM box sat. Air goes under the front fascia and up into a conical shaped air filter.

I have the C5 version on my '02, and it works well for getting lots of intake air into the supercharger. The only issue I see is that it "could" take in water if you went through a deep puddle of water.

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