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Kurganhunter

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As some in this forum know, I took a 54' Chevy 1 ton as a base for my project. (see pic) The 47 to 55 1st series are the same basic style with a few changes. February 1955 GM decided that their new engine platform, the cast iron V-8, was going into their truck line. The designers did not feel that the existing trucks had a large enough engine bay for the new bullet. They re-designed the truck line to the Apache style. 50 + years later, guys like me look at it and say "I can get that in there" It does fit. But, just barely and with some frame shaving. I have a 4 core radiator good for 1000 hp. (for my 330 rated engine) I run Evan's coolant and a Mishimoto 16" 1700 cfm electric puller. I run a low temp thermostat and a fan start of 165. With no place for the air to go except up into the bulbous hood, I was running a temp of close to 235. I added a 12" 2000 cfm Derale pusher up front which brought me down to 230. I contributed it to 4:11's and full-time 4X4 and cringed every time I drove it. I was talking with a guy that I had not seen in a while who also owns a 54' It is a street rod with an iron V-8. He said his engine let go due to heat. That freaked me out and I decided to break out the grinder and open up the hood. It still runs hotter than I would like at around 205 and 220 on a climb. But, I no longer feel impending doom on every trip. If you intend to shoehorn an iron block V-8 into a 47-55 Chevy, consider the air movement BEFORE you paint it
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Kurganhunter

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IMG_1421.jpg
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Kurganhunter

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Update: I put an appropriate size radiator on the truck. A 2 core with 1.25" tubes. Today I drove it to work and the engine never went over 180. There were even times that the fans shut off on low temp. The engine (and I) were happy with the change
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Reply with quote  #4 

Yeah, but did you ACTUALLY need to cut those two holes in the hood?  I would have suggested the large core radiator BEFORE you cut those two holes.

Sometimes we all do things that we look back on and "DOH"...

At least you have resolved your overheating problem.

jw

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Kurganhunter

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Reply with quote  #5 
Sometimes???? I have done that during the entire project. After talking to others with the same issue,(47-54 w/V-8) I actually did need some sort of escape for the air. It did drop me 15 to 20 degrees which means I still might be hovering around 200. I wanted much lower
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