1988 GMC C1500 - Z06 Package!

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Supercharged111

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Ordered everything but the AC compressor to totally re-build the HVAC and AC system on this truck. All of that showed up today, then realized I forgot to order a compressor. Hopped on rock auto, found the Four Seasons R4 compressor on clearance for $116! I know I paid close to $200 from them for the same compressor when I did the 90.

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Operation "Frosty Balls" is a GO!

You upgrading the nut vent too?
 

PolarBear

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Alright, this truck came without wiper arms and blades, so took the set off of the black 89 parts truck while tearing it down, media blasted them lastnight after work.

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Ran out on lunch and grabbed another can of satin-black paint and a pair of blades.

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Would ya look at that? Million dollar wiper arms, for a five dollar truck and a seventy-five cent windshield.
 

PolarBear

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Excuse the mess, this is just a mock up engine.

Used a 92-94 6.5 GM Turbodiesel air intake box to create a 100% sealed, true cold ram air system for this 88.

It's attached to the factory air duct in the inner fender that provides cool air via a duct that's mounted under the passenger headlight assembly.

I got so tired of seeing swaps with just a cone filter hanging out in the engine bay, sucking hot air.

OEM+ FTW!

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Supercharged111

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So that 4" round had the correct circumference to fit that box nice and snug? Or was some finagling in order?
 

PolarBear

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So that 4" round had the correct circumference to fit that box nice and snug? Or was some finagling in order?

Quoting off of the top of my head here, the box inlet is 7.5" x 3.5" OD, Oval. A 4" coupler at 5.5" long, allowed a smooth transition from the 4" OD intake tube, to the 7.5" x 3.5" OD oval outlet of the 6.5 TD air box.

Basically, engineering speak aside, it was the perfect slip fit, to make the correct Oval to Round transition, without looking twisted, tweaked, contorted or having to force anything on either end.
 

Supercharged111

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You've got me thinking about my 1500 right now, I'll have to snag one of these at the junkyard if I ever happen upon one.
 

PolarBear

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You've got me thinking about my 1500 right now, I'll have to snag one of these at the junkyard if I ever happen upon one.

From an engineering standpoint, it'll work great, should have lower IAT's versus a cone filter.

I will say though, it was fairly difficult to track down, being it's a 2-3 year only airbox. There are some on ebay and marketplace, but I refuse to pay $100+ for a $25 piece.
 
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