Thread: Restoring Rusty
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Old 04-05-2016, 06:53 PM   #3439
MikeB
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Join Date: Jul 2000
Location: North Texas
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Re: Restoring Rusty

Quote:
Originally Posted by Gregski View Post
Forum mates, one last issue and that's about all the problems I have encountered so far

My water pump is eating fan/pulley bolts like their going out of style, do you guys know if these newer water pumps come with METRIC threads or something?
I have seen them with 1/4"-28 and 1/4"-20 threads. GM went partially metric in the 80s, so who knows for sure. Closest thing to 1/4" is 6mm x 1.0.

My real GM water pump #88894341 (also AC Delco 251-544) has 1/4"-20 threads.
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Mike
1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- sold
1981 C10 Silverado LWB -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
Retired as a factory automation products salesman.
Worked part-time over the years for an engine builder and a classic car repair shop.
Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!
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