New crate 454
Last month I broke the crank in my 1988 Winnebago Super Chief. It had only 57,000 miles on it. I located a GM crate engine 454. I took my time and installed the engine piece by piece. I went with a n...
Forum Discussion
enahs wrote:
but I am suspecting radiator/fan operation (though the temps you mention are so extreme as to make me wonder about the sending unit).
His reported temperatures are consistent with our fan clutch failure problems on our 454. We saw even higher temps. I almost ruled out the fan clutch as a problem because the temps were so high and we saw those high temps while running on the highway - at a time I thought airflow through the radiator should have provided sufficient cooling without the fan. It didn't. Replacing the fan (more accurately: replacing the replacement bad fan with a good replacement fan) solved the problem instantly. I had begun to suspect the temp gauge also - after replacing the radiator twice and the fan/clutch once.
