LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Question for anyone that has run the comp 242/248 cam

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Old 08-30-2007 | 05:08 PM
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Default Question for anyone that has run the comp 242/248 cam

Did you ever scan it and what was your MAP reading at idle? or how much vacuum did you have? Does anyone know what that cam should read?

I scanned someone's car with this cam and the MAP sensor reads low-mid 80s kpa at idle. That seemed like it was too high to me. I know it's a big cam, but still.
Old 08-30-2007 | 10:36 PM
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mine runs around 70-75
Old 08-30-2007 | 11:28 PM
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From: LT1 land...the "409" of the 90s!
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Not a comp but...

My 240/247 on a 110 is 65-70




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