403 in a 1977 Trans Am question

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Old May 11, 2022 | 02:57 PM
  #1  
JPinAZ's Avatar
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403 in a 1977 Trans Am question

I am looking to replace a dead electric fan set up with a fan blade and clutch. I thought I would ask here first because there is more knowledge and willingness to help here than other forums. I need to know what I am looking for. I believe the fan can be six or seven blade, possible 19 or 19.5 inch diameter, measuring the shroud somewhat confirms this too. I do not see any aftermarket fan blades. I do see aftermarket short and factory height fan clutches. It is an AC car. Hopefully someone here can answer. TIA
Old May 11, 2022 | 05:37 PM
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look in your Pontac parts book.
a fan and clutch, nOS is alot of money
Old May 11, 2022 | 06:58 PM
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Summit has a vast selection of Fan blades though not sure which of these will work in your application.
This Pontiac vendor lists a 17" fan for 67-79 Firebirds.

Summit also has a selection of Fan shrouds (Summit says this shroud fits a 77 TA with a 403)

I think you should be able to get everything you need from either Summit or one of the Pontiac vendors. My recommendation would be to get the dimensions on the shroud (if possible) and then order the fan based on that.
Old May 11, 2022 | 08:11 PM
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olds 307 and 403's Avatar
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Looks like a 19.5" 7 blade clutch fan.
https://www.ebay.ca/itm/194798508630...mis&media=COPY
Old May 12, 2022 | 05:47 AM
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If you want a stock set up, pm me, opulent guys part ta’s lovally. I could prob find you a set
Old May 12, 2022 | 04:45 PM
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