BobDunahugh Messages: 2465 Registered: October 2010 Location: Cedar Rapids, IA
Karma:
Senior Member
The previous owner had Horn Automotive rebuild the 403 in our GMC. I have known them for about 30 years. They have a very good reputation. The 403 was done by them in 1994. Then the owners drove it 1880 miles before parking the GMC in 1995 for 20 years. The paper work says new water pump. So did the 403 get the correct 6 blade impeller water pump. Not the car pump. Been running fine for the 4,000 we've put on it in 2016.. But I think I should pull the pump to check it. Bob Dunahugh
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