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    AIR Injection needed for 88 K1500

    I happened to be looking at the LMC Truck catalog today and they had the AIR hoses, check valves and oem exhaust manifolds. I didn't look for the actuator or the pump but they might have those too. I got a pump from O'Reilly's 6 months ago. They're all made by Cardone so get yours from...
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    Ignition control module

    Circling back to the 9c1 police pursuit spec ICM (D1943A) the Delco OEM one is $115 at O'Reillys and $75 from Amazon. EDIT- RockAuto has a Standard Motor brand one for about $20 + shipping. Standard Motor is good brand. Off topic, the 9C1 police spec TBI injectors, which flow at 68...
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    '88 5.7 Super Chip superchip?

    I've got the original ad and it is the same chip for 1500/2500/3500. The motor and tranny was the difference between the chips. I'll see if I can post a pic of the ad for posterity.
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    '88 5.7 Super Chip superchip?

    I emailed Holley and here is their response: __________________________________________________ Thank you for contacting SuperChips! We do apologize, but there is no way for us to tell what is on the chip as any related equipment has been out of production for over 20 years. If the product...
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    air pump/smog pump delete

    Thanks for the info about the diverter and ECM. I think the AIR system was a state regulation not a federal one. Some states, like California, inspect to ensure what the vehicle came with is there. Many do not. My state is one that doesn't but I'm going to keep everything intact in case I...
  6. N

    air pump/smog pump delete

    Just gonna leave this link here for a 1/2" -20 plug for anyone wondering what it takes to block the factory manifold smog pump ports...
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    '88 5.7 Super Chip superchip?

    How do I do that?
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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

    Thanks! I saw a similar kit with cam etc.. from Comp. Plus they've got just the spider, dogbones and retainer in a kit by itself for $150 that you linked to. I read in one of the posts or maybe it was a footnote to the comp cam kit about that different retainer plate. I'll get the casting...
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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...
  11. N

    Disable automatic lock?

    Thanks for the insights and help. I really appreciate this community. Good to know that it wasn't a factory option. I thought it was a little early for that. I didn't get any remotes with the truck. I'll look around for a box to figure out what is doing this. I've been under the dash quite...
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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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    Upgrades for longevity

    I'd start off by "baselining" the truck. Go over whatever records you have and start checking and repairing everything. Start with safety items. Eg. Brakes. How much pad/shoe is left. How much rotor or drum is there. When was the fluid last changed? How old are the brake lines/cables...
  14. N

    Belt Squeak is driving me crazy

    My '88 had a squeak I couldn't solve with a belt or tensioner. Turned out to be AIR pump.
  15. N

    Valve Stem Seals Differences

    Good point. You could remove the rocker arms first and then pressurize the cylinder and then remove the springs before changing the seals.
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    Valve Stem Seals Differences

    I just did this job on my '88 5.7. There were no exhaust seals left, just some rubber goo. The intake seals were hardened and several were crumbling. No more puffs of smoke when it starts up and oil consumption is gone. There are 2 different part numbers for the felpro intake and exhaust...
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    Looking for upgraded radiator

    My '88 5.7 came with a single core aluminum 28" radiator. I snagged a 34" dual core OEM radiator, brackets and wider shroud out of a '96 5.7 from the treasure yard. Its got the transmission and oil cooler tanks. If you are eliminating those you could get an aftermarket 34" two or three...
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    Mode Actuator Repair/Replacement

    LMC lists 3 different actuators- one for the mode door, one for blend door and one for air inlet. Others have said mode and blend motors are the same. I am looking for the air inlet actuator for my '88 because it is out of stock or no longer made. In the course of that search I looked at some...
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    Air Inlet Door actuator

    E-bay has them for $30. I'd prefer AC Delco, Standard or even Dorman so I'll keep looking for a part number. Note that for the '88-'91 there is a notch in the part that moves the door. I visually confirmed my truck needs the notched actuator. The other 2 actuators have 2 flat sides and no...
  20. N

    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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    Head Swap Options For 5.7L 350 TBI Engine

    Sounds like a good plan but maybe a new post.
  22. N

    aluminum radiator where to get.

    Get the oem radiator it's aluminum. 1800radiator.com has amazing prices and fast free shipping.
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    Head Swap Options For 5.7L 350 TBI Engine

    Good eye on the free chip thing! Since you've already upgraded the exhaust and will have the intake off, you could upgrade the cam pretty easily and still run the same heads. Unlike heads, cams aren't super expensive. If you put in an edlebrock cam they might have a chip that works with the...
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    Quieter upgrade?

    What I'm considering now is getting the Toyota Tundra 5.7 pipes from the header to the muffler which are 2.5" and include 2 small cats per side with a cross over and stay dual until a 2-in/1-out muffler. You can find them for $200, which compared to a y-pipe and high flow cat isn't bad. I'd...
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    Head Swap Options For 5.7L 350 TBI Engine

    I used relocs on my intake on the bench and the heads on the engine. I had crumpled newspaper blocking all the ports and a towel in the valley. When I was done I vacuumed everything and then wiped it all down with acetone until the rags were clean. Then I removed the newspaper and installed...

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