1987 Chevy R20 3+3

[jkeaton]

Now it's too high in the front. Lol. That's quite a project you got going there. Nice work.

 

[Half Assed]

Yeah I kinda didn't want it to turn into a big project, but that's life. The good thing is I've been able to do all the work myself so far, so I'm really only loosing time. Gaining experience though which is always a good thing. I only have a few hundred dumped into it so far, but the way I see it is I have to spend $5 to fix it, I can spend $10 to make it better.

The coil spacers are made of aluminum, so I think they might compress a little after driving it around.


I also got a TBI hat from a 90 seville 4.5 v8. I'm going to use a 3.5" cone filter with it and get rid of the old holley filter. I picked up a low mile TBI unit from a wrecked 95 tahoe without very much slop in it. The throttle shaft on this truck is wobbly af and is probably giving bad vacuum readings to the map sensor.

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[mistaake]

Don't I recognize this from gmsquarebody? Either way very nice crew cab.

 

[Half Assed]

Don't I recognize this from gmsquarebody? Either way very nice crew cab.

Yeah I have it posted over there too.

 

[Half Assed]

almost finished with the serp belt conversion. I think the only thing left I need is the adapter for the alternator plug.

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[95C1500]

truck's looking good. Not half assed at all IF it doesn't settle enough, you could always throw a small block in the back to level it up

 

[thz71]

Yeah I kinda didn't want it to turn into a big project, but that's life. The good thing is I've been able to do all the work myself so far, so I'm really only loosing time. Gaining experience though which is always a good thing. I only have a few hundred dumped into it so far, but the way I see it is I have to spend $5 to fix it, I can spend $10 to make it better.

The coil spacers are made of aluminum, so I think they might compress a little after driving it around.


I also got a TBI hat from a 90 seville 4.5 v8. I'm going to use a 3.5" cone filter with it and get rid of the old holley filter. I picked up a low mile TBI unit from a wrecked 95 tahoe without very much slop in it. The throttle shaft on this truck is wobbly af and is probably giving bad vacuum readings to the map sensor.

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You think an aluminum spacer is going to change shape?

 

[Half Assed]

You think an aluminum spacer is going to change shape?

The way the spacer is shaped it's probably going to compress a little over time, but I'm just guessing.



Got the radiator in and started it up. Purrs like a kitten and no leaks yet.

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Last thing it needs is the adapter for the alternator plug that I ordered today.

 

[Half Assed]

I got an alternator plug adapter for it.

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[Half Assed]

So now I had to figure out why the brakes suck. The pedal is hard as a rock and has little change when the engine is running.

I did a vacuum leak down test on the booster and I could only pull about 4 inches out of it with my little hand operated vacuum pump. The vacuum booster had a some rust on it from a previous M/C leak, so assuming it was broken, I threw that crap in the trash.

In comes hydroboost.

For some reason I thought ordering a reman'd hydroboost for an 3/4 ton diesel was going to work. I thought maybe I'd get lucky and get one with the firewall bracket in the box. Advance ordered 2 of them and neither had the firewall bracket (they usually don't) then I remembered that the reman is missing other parts besides the bracket; so I scrapped that idea, got my $200 back and went to the junkyard.


I got this baby from a 2002 express 3500 van for $45.

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hmm

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hmmmmm

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I ground off the rivets

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aww yiss! My hunch was right. The vacuum boosters are probably exactly the same for either truck, they just have different mounts on the back. My '87 uses a spacer with rivets, but has the same 4 bolt (3.5" by 3-3/8" roughly bolt pattern) as the express van that uses studs and mounts flat to the firewall. I would guess the GMT400 has the same pattern too.

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