ARE YOU TRYING TO RUN A CLUTCH FAN ... to keep it easy you mite have to run a 4 blade fan

I see with the alternator, you are using a long water pump.....A shorter water pump is available, but your alternator goes to the other side and your fancy pulleys would be the wrong ones. I would go with a flex fan and a shroud

I'll try to find pictures for you later today.

Actually,when I think about it, 66GrandeGuy would be your best help. He has factory a/c and his setup would be identical to what you need.

The way I see it, there are two options. Source all the parts associated with a short water pump / AC combination or keep your existing bracketry and install dual electric pusher fans. If you opt for the electric fan option make sure to get fans designed to be pusher fans when installing in front of the radiator. If going with a engine driven fan there are a number of vendors that sell brackets for short pumps on big blocks just pricing may be a bit prohibitive.

Good Luck.

It looks like you've got 11 cm between the radiator and the water pump pulley.  How wide is your electric fan?  If too wide, I'd suggest moving to a pusher electric fan in front of the radiator.  Or go to a multi-blade flex fan mounted conventionally. 

Changing everything to a short water pump will be a bit of a pain, as it will effect your crank pulley, and also alternator, power steering pump and a/c mounting and their associated pulleys.

2qwik2c wrote:

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Do you have a spacer between the rad and rad support cradle?

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 no, i left that out.

67Poncho wrote:

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How about a pusher/puller electric fan set-up? My '68 Grande with a 396 has A/C still in place as well if pics are needed...

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Thank you,  A couple of pics would be appreciated

koolconvertible wrote:

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Carl Stevenson wrote:

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Yes, you will need to convert to the original style brackets and pulleys(65-68 396-427) as far as I know. I don't know of any other way to change that. It is all a bolt on for your engine, but certainly it's an added expense.

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 the motor came out of a 72 chev wagon. Finding original 65-68 brackets and pulleys could be difficult in Oz. will investigate but push fans seem a good option.....

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Those brackets are enough tough to find on this side of the pond.

I believe all bbc corvettes (65-74)used a short water pump. That may increase your odds of finding brackets.3992077 is the gm water pump no.

if there is a  Shot Over jet boat tour company there you could check with them. Auto wrecker here sends a C can full of big block chevs when they get enough to send. they may have pulleys and brackets on the engines when they are sent.

pontiax wrote:

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I believe all bbc corvettes (65-74)used a short water pump. That may increase your odds of finding brackets.3992077 is the gm water pump no.

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 Went to check my mates. he bough a 68 moredoor impala which included a big block. He's just installed it. Turns out its numbers make it a corvette 427. What a buy. Cost him 10000 which is cheap for an oz buy. He has all the short pump style gear on his so now I know what I'm looking for. 

66 Grande guy wrote:

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 Anything I can do to help?

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Yes, stay more current with the posts on Canadian Poncho!

Just kidding, I'm sure Philip will be by shortly, he spends more time on here than many of us regulars....