[A Schab]

Is there any chance that the june and july birds were 68 built and are infact very early cars? 69 prodution ran to 11/69 at norwood so you could have june and july built 69 cars that were built in both 68 and 69.

[marshallbeach]

Is it the engine casting date or the car build date that would determine short or long water pump? I would think the water pump was installed at the time of engine assembly,
but it seems like the pulley would have been installed during the car's final assembly.

[Flowjoe]

So it seems that the possibility exists for non-F-bodies to have either the long or the short pump in the 2nd half of '69.

While we have owned our '69 GTO since '70 I have no way of knowing what pump it had prior to a change out in the mid '80s. What I do know is that the pulleys were not changed. So if the belts line up correctly then I can use the pulley number/application to determine correct water pump usage for my car (as it needs a new pump after 25-ish years ). Correct?

['ol Pinion head]

Originally Posted by A Schab

Is there any chance that the june and july birds were 68 built and are infact very early cars? 69 prodution ran to 11/69 at norwood so you could have june and july built 69 cars that were built in both 68 and 69.

Missed this post earlier, the '69 Firebirds I mentioned were built in June & July of '69. Wrote down the VIN & cowl tag numbers off each at the time, as both honestly weren't that eaten up with rust & could be bought cheap as builder cars.

The two groove non a/c pulleys & orig "351" dated pump I pulled off the early June 69 built Bird ended up going on a '69 RAIV Judge built in May out of Pontiac plant. The Judge was presented as a documented 33K mile car when I examined it in OH & my customer bought it & I have little reason to doubt the mileage claim. Aftermarket short 69 waterpump, battery cables, battery & tires were only things that had been added to it. New owner desired the manual strg parts being pulled & put in a box, & "correct" P/S set-up being added, along with correct two piece rotors & correct dated calipers on the car. I suggested otherwise, but obliged in putting together a really nice disc changeover. When Phil later sold the car (after going Gold at GTOAA Nats) the next owner pulled the added p/s & concours restored disc set-up off the car. Made sense to me as the car was built as runner, not a cruise-in driver.

[Flowjoe]

Going to add this info to this thread.

Car is a '69 GTO built at Fremont 06B:


Car was purchased repossessed off Hoover Pontiac's lot in June of 1970 by my parents (I was 6 1/2 at the time). OE water pump changed out in early to mid '80s by my Dad and myself with parts house pump (whatever was cheap knowing my Dad - LOL). Car currently has ~50K miles. Other than two repaints and an engine detail it is unmolested. Here is the belt alignment:



Spacer number:



Pulley number:



Here are the numbers of the pump installed in the '80s: