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    '88 5.7 Super Chip superchip?

    My truck is a '88 5.7 K1500. Today at the treasure yard I stumbled across an '88 C2500 5.7 and the ECU had a "Superchip" sticker on it. The chip in the ECU had a superchip sticker on it too. In the glove box the previous owner had saved the magazine ad for the ADS Super Chip stapled to the...
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    '88 5.7 Roller cam conversion

    My '88 5.7 has the bosses for the roller cam spider in the intake valley. So I'm assuming a cam retainer plate can be installed but haven't visually verified that. I've read many of the cam threads here. I use the truck to tow a boat or trailer and haul materials. I'd like to not have to...
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    Disable automatic lock?

    In my '88 K1500 Silverado, if I the truck is running when you close the door it locks automatically. Usually if I have to step out of the truck while its running I remember to leave a window down or not close the door. However, sometimes I forget and end up locked out. Not such a big deal...
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    Air Inlet Door actuator

    Looking for part number for '88-'91 Air Inlet Door Actuator because LMC is out of stock. It is different from the later ones. LMC lists 2 different actuators for 88 and 3 for '91+. Mine definitely has all 3. 1) Mode selector (LMC 11). 2) blend door (LMC 12); and 3) the air inlet door (LMC...
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    Quieter upgrade?

    My '88 k1500 5.7 with 60k original miles needs a new catalytic converter and muffler. They're 35 years old, they're getting loud and everything has pin holes along the bottom center. My guess is that condensation built up and made the holes over those many years the truck was parked. The age...
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    '88 Silverado window switches

    Are they supposed to be illuminated? Neither the driver or passenger switches are back-lit. Is that how they are or should I figuring out why not
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    High idle, '88 5.7

    In park at full temp in a heated garage my '88 k1500 5.7 idles pretty high. I'd guess 1,200 but I don't have a tach. Put it into drive and it idles around 700-ish, which seems fine. It is the fast idle that I'm not so sure about. To deal with a variety of issues, including age, in the last year...
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    700R4 4x4 advice

    My 1988 K1500 7004r is due for a fluid and filter change. 60k original miles and 2 owners. I use it mainly to haul materials, tow and some occasional mild off roading. It drives fine right now and the fluid looks good. I just added an OEM auxiliary transmission cooler from the treasure yard...
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    1988 5.7 TBI heads

    Blew a head gasket and thinking about replacing or upgrading the heads while I've got it torn down but I'm on a limited budget. Not interested in the vortec heads route or upgrading to a roller cam set up. Just need to get back on the road. Found these heads and wondering if they'd be an...

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