Quote:
Originally Posted by 68pongto
From what I have seen lately on concourse gold and original RA I and RA II cars is the steel 4 blade. I am doing more research on the topic, but it looks like the 68 RA cars use the 4 blade.
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I think there is a strong case for the 4 blade fan on the 68 Ram Air cars. The dealer brochures make multiple references to the 5 blade flex fan (Power-Flex code 684) as standard equipment for GTOs.....but that doesn't prohibit the use of a different fan for the ram air engines.
The illustrated facts and features brochure shows photos of the family of available engines but the photo for the ram air engine is a close up of the air cleaner so the fan isn't visible in that photo so we can't draw any conclusions from that page.
Probably the smoking gun is the MPC book. It specifically lists 9798940 for the 67-68 F/8-T/8 400 Ram Air application. I originally assumed that part number is the 5 blade flex fan but if I flip to the previous page I see that same part number listed for multiple applications with the additional description as being a 4 blade fan (2 5/16" pitch).
When I bought my car it had a 4 blade fan but the engine had already been changed so I don't know if that fan was original or not. Based on the MPC book....the 4 blade fan is correct for Ram Air cars in 67-68. I hope I have it laying around still.....
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