[Terry77TA]

Hi, is there a diffrence between he years? my supplier tells me that 77 & 78 model years are diffrent? mine has the 1 heater hose outlet & a short hose to the thermostate housing. any1 recommend somewhere to get a replacement. pics attached, Thanx

 

[78T/A]

They are different. www.rockauto.com shows pics of the different ones. Look to be reasonably priced there as well. I have bought quite a bit of stuff from them and they ship quick. Even though your profuile says 78 the pictures look like the one for a 77.

http://www.rockauto.com/en/catalog/pontiac,1977,firebird,5.7l+350cid+v8,1250143,cooling+system,water+pump,2208

 

[Aus78Formula]

Not sure why the year would make a difference. There's A/C or Heavy duty and non-A/C. If it's an original 350 then it would be a '77 model being one year only. I thought in later years the longer pump became almost standard especially with smog pumps but seems a few exceptions always around. Link doesn't work here, does it say why they think the pumps are different based on year? Wouldn't be surprised if it's a different engine listed. There were both 350 Olds and Pontiac engines used in a 77 Firebird.

 

[78T/A]

There is definitely a difference in 77 and 78 and with A/C and without A/C.

77 with A/C

77 without A/C

And 78 water pump.

His picture looks like the 77 without A/C to me.

I think the 77 with A/C and a 78 with A/C are the same for Pontiacs but undoubtedly there is a difference in the olds model.

The 77 Olds w/p are different whether they have A/C or not and whether they have a heavy duty W/P or standard.

The pics look the same for Vin code "R" but they have different part #'s.

 

[Aus78Formula]

Yup ok so ge careful what you buy since half of those arent for olds.

 

[Terry77TA]

Thanx heaps guys, yeh, it had air con but i removed it & the smog pump, does that make a diffrence?to what water pump i should get? I wont be using either again, car is deffinatly a 77 but weather the motor is original or a transplant? Im not sure, Cheers

 

[78T/A]

Any of these 3 should work. They are all for Olds 350 with A/C so they should be a direct fit.

These are from Rockauto.com but can probably get them from anywhere like your local parts store.

 

[Aus78Formula]

Get whatever pump matches your original options or the pulleys won't line up

 

[Brown Bird]

I don't thing any firebirds came with the olds 350 they came with the olds 403