63 250 hp water pumpe
#1
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63 250 hp water pumpe
Is this a 'long' or 'short' water pump ?
#3
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The Vintage Air guy asked me the question and told me if there was about 3/4" between the front of the timing chain cover and rear of water pump it is a "long" pump. It makes a difference in what he orders !
#4
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St. Jude Donor '07
Frank
interesting... after the earlier thread on adding an alternator, and whether there was ever a 'lonnnnng' pump used in a corvette (JohnZ says 'never'), then it must be a short pump. besides it has the bypass fitting on the top....
what does it measure between the timing cover and the back of the WP?
if a long pump was never used, then why order an a/c setup for a long pump... pumps are easy to change.
Bill
interesting... after the earlier thread on adding an alternator, and whether there was ever a 'lonnnnng' pump used in a corvette (JohnZ says 'never'), then it must be a short pump. besides it has the bypass fitting on the top....
what does it measure between the timing cover and the back of the WP?
if a long pump was never used, then why order an a/c setup for a long pump... pumps are easy to change.
Bill
#6
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That's a "short" pump, but it's a Service replacement with a bypass, which was only used on the solid-lifter engines; the 250 and 300hp engines used a non-bypass pump.
The OEM bypass pump had a smaller diameter bypass fitting.
The OEM bypass pump had a smaller diameter bypass fitting.
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#8
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When passenger cars went to the "long" water pump in 1969, they also got accessory drive mounting holes in the ends of the cylinder heads, as the right-hand alternator mounting was an entirely new design (which was never used on Corvettes).
#10
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Thanks all. Fixed it with the Vintage Air vendor; he's ordering the short pump stuff.