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Flow bench data?

 
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Machine82'
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Joined: 03 Mar 2003
Posts: 24
Location: Omaha, NE
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PostPosted: Mon Mar 31, 2003 3:04 am    Post subject: Flow bench data? Reply with quote

Does anyone know where I could find flow bench data for sbc heads? The casting # is 3973487.
Thanks,
Mike

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GTAracer
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Joined: 04 Dec 2002
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Location: Southeast, AL
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PostPosted: Mon Mar 31, 2003 4:29 pm    Post subject: Reply with quote

3973487....71-72...350..........used on 71-72 350 LT1, 75cc chamber

Chevy High Performance or one of the other magazines used to have a list of heads with flow numbers. I thought the 487 heads were one of them. Couldn't find any numbers on their website when I just looked, though.

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Machine82'
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Joined: 03 Mar 2003
Posts: 24
Location: Omaha, NE
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PostPosted: Tue Apr 01, 2003 5:58 am    Post subject: Reply with quote

Yep, those would be the heads. Every place I've looked had data on everything except the 487's. I was gonna keep looking, though it's starting to look grim. Thanks for lookin though, and if you happen to stubble across something or know someone that could help please let me know.
Email: cluff21@yahoo.com

Thanks again

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Paul P
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1971 Chevrolet Chevelle

PostPosted: Thu Apr 03, 2003 6:19 pm    Post subject: Reply with quote

I have a set of these 487 heads. They are one of the best flowing open chamber heads according to Lingenfelter. I had my set flowed years ago but then ported them and flowed them again(Free Flowbench Check). I didn't record the data but the port work will support 456HP. I just blended the short turn and bowls. Sorry I don't have the stock flow numbers....

There are some 487X heads out there that have 10cc more intake port volume that are said to be a bit better out of the box. I have only seen 1 of these at a swap meet so a pair is hard to come by. Wink
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