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Original Message

It sure doesn't work for an 8V 427.

By Royce - 04/13/2005 11:40:42 AM; IP 4.224.21.67

The smallest carbs Fomoco ever installed on the 427 were the C3AF 9510-BJ and -BK. They were rated at either 595 CFM each or 600 CFM each in single 4V rating. The vacuum drop across each carburetor is different when two of them are on the same engine. This is why a 2V carburetor uses a different vacuum drop for rating CFM. The formula you are using assumes 4 venturis, not 8.

The BJ - BK carbs are adequate for a mildly modified 427 and are extremely responsive, much like a 600 CFM carb on a 390.

Royce

This thread, so far...

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Collapse <a href=../ForumFE/reply.aspx?ID=24488&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24488" onclick="return false;">which carbs to use BJ/BK or BC/BD?</a> -- <font color=#0000ff>Greg Westphall, <i>04/08/2005</i></font><script type="text/javascript">
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which carbs to use BJ/BK or BC/BD? -- Greg Westphall, 04/08/2005

My suggestion is BJ/BK based on: -- Wayne K., 04/08/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24497&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24497" onclick="return false;">I use the BJ /BK</a> -- <font color=#0000ff>Royce, <i>04/10/2005</i></font><script type="text/javascript">
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I use the BJ /BK -- Royce, 04/10/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24502&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24502" onclick="return false;">What camshaft might you recommend?</a> -- <font color=#0000ff>Greg Westphall, <i>04/10/2005</i></font><script type="text/javascript">
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What camshaft might you recommend? -- Greg Westphall, 04/10/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24506&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24506" onclick="return false;">RE: What camshaft might you recommend?</a> -- <font color=#0000ff>giacamo, <i>04/10/2005</i></font><script type="text/javascript">
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RE: What camshaft might you recommend? -- giacamo, 04/10/2005

RE: What camshaft might you recommend? -- walt, 04/26/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24507&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24507" onclick="return false;">RE: What camshaft might you recommend?</a> -- <font color=#0000ff>giacamo, <i>04/10/2005</i></font><script type="text/javascript">
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RE: What camshaft might you recommend? -- giacamo, 04/10/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24511&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24511" onclick="return false;">Agree with Giacamo. N/M</a> -- <font color=#0000ff>Royce, <i>04/10/2005</i></font><script type="text/javascript">
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Agree with Giacamo. N/M -- Royce, 04/10/2005

I can't convince him (dad) to change -- Greg Westphall, 04/10/2005

RE: What camshaft might you recommend? -- rick, 04/20/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24522&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24522" onclick="return false;">CFM formula</a> -- <font color=#0000ff>Bob, <i>04/11/2005</i></font><script type="text/javascript">
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CFM formula -- Bob, 04/11/2005

Btw -- Bob, 04/11/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24536&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24536" onclick="return false;">That CFM formula is for 4V applications</a> -- <font color=#0000ff>Royce Peterson, <i>04/12/2005</i></font><script type="text/javascript">
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That CFM formula is for 4V applications -- Royce Peterson, 04/12/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24538&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24538" onclick="return false;">This formula is for any Carb Eng</a> -- <font color=#0000ff>Bob, <i>04/12/2005</i></font><script type="text/javascript">
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This formula is for any Carb Eng -- Bob, 04/12/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24539&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24539" onclick="return false;">RE: This formula is for any Carb Eng</a> -- <font color=#0000ff>Bob, <i>04/12/2005</i></font><script type="text/javascript">
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RE: This formula is for any Carb Eng -- Bob, 04/12/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24541&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24541" onclick="return false;">The formula provided is for a non compressible fl</a> -- <font color=#0000ff>Greg Westphall, <i>04/12/2005</i></font><script type="text/javascript">
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The formula provided is for a non compressible fl -- Greg Westphall, 04/12/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24542&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24542" onclick="return false;">Sometimes practical experience counts for more...</a> -- <font color=#0000ff>Gerry Proctor, <i>04/12/2005</i></font><script type="text/javascript">
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Sometimes practical experience counts for more... -- Gerry Proctor, 04/12/2005

RE: Sometimes practical experience counts for more... -- Bob, 04/15/2005

RE: Sometimes practical experience counts for more... -- walt, 04/16/2005

RE: The formula provided is for a non compressible fl -- rick, 04/20/2005

Collapse <b>It sure doesn't work for an 8V 427.</b> -- <font color=#0000ff>Royce, <i>04/13/2005</i></font>

It sure doesn't work for an 8V 427. -- Royce, 04/13/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24560&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24560" onclick="return false;">Guess I am saying it wrong.....</a> -- <font color=#0000ff>Royce, <i>04/13/2005</i></font><script type="text/javascript">
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Guess I am saying it wrong..... -- Royce, 04/13/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24575&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24575" onclick="return false;">Gee, now you're responding crankily to yourself. :-) [n/m]</a> -- <font color=#0000ff>Mr F, <i>04/13/2005</i></font><script type="text/javascript">
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Gee, now you're responding crankily to yourself. :-) [n/m] -- Mr F, 04/13/2005

Lol! n/m -- Royce, 04/14/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24587&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24587" onclick="return false;">RE: which carbs to use BJ/BK or BC/BD?</a> -- <font color=#0000ff>walt, <i>04/16/2005</i></font><script type="text/javascript">
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RE: which carbs to use BJ/BK or BC/BD? -- walt, 04/16/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24597&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24597" onclick="return false;">Not original camshaft, Oregon Cam Grinders</a> -- <font color=#0000ff>Greg Westphall, <i>04/16/2005</i></font><script type="text/javascript">
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Not original camshaft, Oregon Cam Grinders -- Greg Westphall, 04/16/2005

Collapse <a href=../ForumFE/reply.aspx?ID=24632&Reply=24488><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor24632" onclick="return false;">.050 duration 6250-B & 6250-C Cams</a> -- <font color=#0000ff>Greg Westphall, <i>04/18/2005</i></font><script type="text/javascript">
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.050 duration 6250-B & 6250-C Cams -- Greg Westphall, 04/18/2005

RE: .050 duration 6250-B & 6250-C Cams -- walt, 04/24/2005