air cfm?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67gmcss · 11-06-2005, 04:49 PM

It's been a while. Like the new look of the site. Here's the question: I am getting an electric fan for the 67. I was wondering what the stock airflow cfm is so that I know I am getting enough that I don't kill the v8. Any help is greatly appreciated.

67gmcss · 11-06-2005, 07:48 PM

Also, does anyone have pix or easy way of removing heater control unit? thanks again.....

69 longhorn · 11-06-2005, 08:06 PM

I couldnt say what the airflow on the stock fan setup was. I run two 14" flex a lites, that are said to pull 1350 cfm ea, on a homemade shroud,4 row core, & painless wiring controls. The setup keeps my 383 cool in the 90 plus temps here in Illinois.

L

67gmcss · 11-06-2005, 08:22 PM

thanks longhorn. I was looking at one on e-bay that is a 16" that says it's 2750 cfm.....no shroud. Wonder if that will make a big difference over running a shroud?

69 longhorn · 11-07-2005, 10:01 AM

I dont think I would mount the fan to the radiator core , like the manufacturers suggest.....IMO, it will beat the he!! out of the core, & wear holes in the tubes after some time. I think a couple guys have mounted a 16" puller fan to the stock shroud(after trimming), & it worked fine for a mild sb daily driver. space may be a little tight tween the waterpump & the fan tho..... a sb in I 6 position will have more room . best of luck,

L

11-06-2005, 04:49 PM	#1
67gmcss Registered User Join Date: Jan 2002 Location: somerset,kentucky,usa Posts: 154	air cfm?? It's been a while. Like the new look of the site. Here's the question: I am getting an electric fan for the 67. I was wondering what the stock airflow cfm is so that I know I am getting enough that I don't kill the v8. Any help is greatly appreciated.

11-06-2005, 07:48 PM	#2
67gmcss Registered User Join Date: Jan 2002 Location: somerset,kentucky,usa Posts: 154	Re: air cfm?? Also, does anyone have pix or easy way of removing heater control unit? thanks again.....

11-06-2005, 08:06 PM	#3
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	Re: air cfm?? I couldnt say what the airflow on the stock fan setup was. I run two 14" flex a lites, that are said to pull 1350 cfm ea, on a homemade shroud,4 row core, & painless wiring controls. The setup keeps my 383 cool in the 90 plus temps here in Illinois. L __________________ http://community.webshots.com/user/hotrodhorn Last edited by 69 longhorn; 11-06-2005 at 08:14 PM.

11-06-2005, 08:22 PM	#4
67gmcss Registered User Join Date: Jan 2002 Location: somerset,kentucky,usa Posts: 154	Re: air cfm?? thanks longhorn. I was looking at one on e-bay that is a 16" that says it's 2750 cfm.....no shroud. Wonder if that will make a big difference over running a shroud?

11-07-2005, 10:01 AM	#5
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	Re: air cfm?? I dont think I would mount the fan to the radiator core , like the manufacturers suggest.....IMO, it will beat the he!! out of the core, & wear holes in the tubes after some time. I think a couple guys have mounted a 16" puller fan to the stock shroud(after trimming), & it worked fine for a mild sb daily driver. space may be a little tight tween the waterpump & the fan tho..... a sb in I 6 position will have more room . best of luck, L __________________ http://community.webshots.com/user/hotrodhorn



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