The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1970 C10, 4x4, 4 speed overheating/ clutch adjustment

Double Stack · 08-20-2011, 10:27 PM

I couldn’t put it down.... I re-adjusted the timing with the vacuum tester, and now my idle is a little better.

Boog,
The guy I bought it from wasn’t using because the fan matches all the hardware. I figured if it worked for him, it would work for me. I was going to try throwing it back on just for the added benefit. And, yea it runs about 185- 190 down the highway now that I just adjusted the timing a little better I think. It didn’t seem to be rising nearly as fast after a messed with it a little more, but it still hit 200 when I parked it. Do you think the fan shroud will help a lot?

My buddy told me to set it right above stall, and then to try it up a hill with some throttle. Then to listen for the soft knocky/chirping and then to advance it a little when I got there. I heard the noise when driving which was good, but I haven’t advanced it yet because the engine was damn hot!! The other noise I heard that I wasn’t expecting was what I think was the belt chirping when I first started her up and gave it some gas. After the initial startup, the belt doesn’t chirp anymore. All in all, the truck ran a lot better and shutoff without running on/ dieseling witch was pretty nice!! Next is the fan shroud that will hopefully help her out a little!!

What’s the normal operating temperature for one of these trucks anyways?

Anybody else have any thoughts?

08-20-2011, 10:27 PM	#6
Double Stack Registered User Join Date: Aug 2011 Location: Oregon Posts: 82	Re: 1970 C10, 4x4, 4 speed overheating/ clutch adjustment I couldn’t put it down.... I re-adjusted the timing with the vacuum tester, and now my idle is a little better. Boog, The guy I bought it from wasn’t using because the fan matches all the hardware. I figured if it worked for him, it would work for me. I was going to try throwing it back on just for the added benefit. And, yea it runs about 185- 190 down the highway now that I just adjusted the timing a little better I think. It didn’t seem to be rising nearly as fast after a messed with it a little more, but it still hit 200 when I parked it. Do you think the fan shroud will help a lot? My buddy told me to set it right above stall, and then to try it up a hill with some throttle. Then to listen for the soft knocky/chirping and then to advance it a little when I got there. I heard the noise when driving which was good, but I haven’t advanced it yet because the engine was damn hot!! The other noise I heard that I wasn’t expecting was what I think was the belt chirping when I first started her up and gave it some gas. After the initial startup, the belt doesn’t chirp anymore. All in all, the truck ran a lot better and shutoff without running on/ dieseling witch was pretty nice!! Next is the fan shroud that will hopefully help her out a little!! What’s the normal operating temperature for one of these trucks anyways? Anybody else have any thoughts? Last edited by Double Stack; 08-20-2011 at 10:33 PM.