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Old 11-14-2006, 12:27 AM
Pozi Pozi is offline
Join Date: May 2006
Posts: 1
Default SBC water pump question

What years do they differ? I am wondering if they interchange from 1970 -1987. Anyone know?
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Old 11-16-2006, 10:41 AM
Rafbody Rafbody is offline
Join Date: Oct 2005
Posts: 3

From the book "Chevrolet V-Chevrolet V-8 Engine Casting Numbers 1955-1993":
Although the basic design of the Chevrolet V-8 water pump has remained the same over the years, many changes and alterations have taken place. Certain models have bypass hose holes or mounting bosses for engine accessories. Heater hose hole locations change from model to model as well. In 1969 both big- and small-block water pumps were changed fram a "small" to a "long" design, to accommodate Chevrolet's new configuration for mounting engine accessories. The 1969 casting was altered, leaving noticeably more distance between the back of the water pump and the timing chain cover..."
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Old 01-12-2022, 12:07 PM
Katla17 Katla17 is offline
Join Date: Jan 2022
Posts: 1

Any link on troubleshooting the cooling system?
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