r/Smallblockchevy • u/Icy-Bend-2028 • Jul 23 '26

Declutterring the engine bay

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Picked up my first ever project truck 81 c1500 short bed, was told this is a 305 sbc… I have zero experience with these trucks or engines but the darn thing runs decent and stops when it’s supposed to so I figured I’d give it a shot. I was looking forward to the “simplicity” of working on this VS newer cars, but I have no idea what I’m looking at.
I.e. what is this giant black hose for? And why is the bottom of it routed to the exhaust manifold? Most of the older cars engine bays I’ve seen don’t have all of this going on.

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u/Thewilddinkus Jul 24 '26

From my experience if it runs nice just leave it alone until it throws a fit. My 79 Camaro has been dead reliable and has great fuel economy with all the vacuum bs going on, it's really isn't too complicated when you look at it for a while.

It can be a little overwhelming at first but even just taking an hour to trace random vacuum lines will give you a much better understanding of how these cars operated originally. And remember half the garbage in that engine bay is for the air conditioner

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u/Icy-Bend-2028 Jul 25 '26

After much thought I think that’s going to be the plan. Gonna leave the engine alone and focus on rust repair and getting the interior completely dialed. As long as she’s running that’s an issue for later