Re: Cooling system issue....
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Mine is a 350, out of a 94 GMC 1500 Truck. I've owned it 3 years and run Regular Grade Gas (the 87 Octane stuff), and my engine has NEVER Pinged/Detonated, in Cold or Hot conditions. All I know is that when I was up in Northen California at 3000' Elevation, (where I lived), that sucker never seemed to go above 180. Now if I went down to the Lake on a hot day (1000' Elevatiuon), it "might" go to 195, but never OVER that. So now I'm at 500' elevation and it is WAY Hotter, (than Northern California), so I knew I'd be running Hotter down here. But this whole post may be a Bllessing in Disguise", because obviously I needed a Shroud, (never had one), and the Flex Fan was inadiquate. So I know adding the Shroud, Clutch Fan and Thermostat, cant be a bad thing. Since I don't know what temp Thrermostat is in my engine, (and I'm already getting a Shroud and new Fan), I thought I'd replace the Thermostat and Coolant. This gives me a Base Line, and now that it's MY Truck, I'll know what Temp Thermostat is in it, along with the piece of mind that I have a Shroud, Clutch Fan and new Coolant. Seemed like a good idea, after moving to Palm Springs anyway with this heat. :metal: After 6 years on this Forum, and you guys STILL never cease to amaze me with your wealth of Knowledge. Hell even I was able to help a few "Newbies" here on the list. Feels Good!:smoke: |
Re: Cooling system issue....
Roger... Is your 350 still equipped witht the stock TBI from 1994? If it is... you'll need a 195 degree t-stat.
Gary |
Re: Cooling system issue....
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Your on the right track w/ the fan and shroud setup, at low speed or stopped these are the number one things to check because you probably have airflow issues. Chuck the flex fan...I've never been a big "FAN" of flex fans. I've seen tests between factory type thermo clutch setups vs. flex fans and the factory setup beats it in horsepower used and cooling. They are hard to beat unless you want to drop hundreds into a high end electric setup. The cheap electric one's just won't pull air like the aggresive pitch thermo factory setup. --Also ... absolutely chuck the rad cap and thermostat then flush and fill. Do these whether you know it needs it or not ....cheap and easy stuff !!! --Make sure your timing is not excessively retarded...this will cause overheating too. Try to run as much timing advance as you can without excessive starter load and or pinging. This will make more horsepower, quicker throttle response, fuel mileage and run cooler....nuthin but good. |
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The antifreeze companies wont tell you this (not in their best interest) they always say 50/50 ...this is not optimum for cooling but is for anti-freezing properties . It is a well know fact that straight water outcools any antifreeze mixture. But this can cause other obvious problems. |
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that products like "Water Wetter", were not compatible with Coolant. I havent researched it, but rather just going on what was mentioned here. |
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"Compatible with new or used antifreeze (including DEX-COOLTM and long-life versions) to improve the heat transfer of ethylene and propylene glycol systems" http://www.redlineoil.com/product.aspx?pid=74&pcid=10 |
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Redline: Water Wetter Rust and corrosion protection allows for use of straight water in racing or reduced antifreeze levels in warm climates |
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I believe my Truck does NOT have a TBI...(Traumatic Brain Injury).:four: That being said...what "TBI" are YOU refering to? I'm not that "Up" on engines after 86 or so. |
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TBI = Throttle Body Injection
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Then go with a 180 degree t-stat for a carbed 1st gen small block. :)
At least that's what i use with no probs. Traumatic Brain Injury!! :lol: That was good mang! Gary |
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Just another thought here to.
I have ran into this before. The stock gauge in our model trucks may not give a good reading if the temp senor is for that motor and not our year motors. You may want to check that. When I put my TPI motor in the truck it read high all the time. I had to get the sendor out of the old block and install it. It reads just like it should have then. This may have been covered.;):chevy: |
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