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Old 01-29-2007, 11:50 PM
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Cam calculator-Is this correct??

I'm curious as to what cam duration I have either advertised or at .050. I have a 194 Chevy 6 that I'm going to assume was rebuilt with an original (or close) cam. The service manual lists the timing as:

Intake Opens BTC 34*
Closes ABC 86*

Exhaust Opens BBC 68*
Closes ATC 52*

This is the calculator I'm using
http://www.wallaceracing.com/camcalc.php
It says:
Your cam has an Overlap of 86.00 degrees and has in Intake Duration of 300.00 degrees.
The Exhaust Duration is 300.00 degrees.
The Inlet Cam has an Installed Centerline of 116.00 degrees ATDC.
The exhaust cam has an Installed Centerline of 98.00 degrees BTDC.

Are these numbers anywhere near correct? Thanks.

Strummin

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Last edited by strummin67; 01-30-2007 at 11:26 AM.
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Old 02-01-2007, 12:51 PM
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The numbers are right but don't make sense. Shows a cam with 107LSA that is retarded by 8 degreees.
not likely Something is wrong. Misprint.??
Anyways they do not indicate a 300deg cam @.050"
This is a stock type cam. .050 duration is likely between 178 to 205 degrees.
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Old 02-01-2007, 01:09 PM
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I checked the calculator with another cam I had the numbers for and it was correct. I think my manual measured from a different starting point. Thanks.

Strummin
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Old 02-01-2007, 01:26 PM
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Old 02-01-2007, 03:05 PM
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I originally posted the question here first but got no responses...until today.
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