needing cam compression info

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09-04-2018, 03:11 PM

StarScreamin

Beginning Member

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Join Date: Apr 2017

Location: Idaho

Posts: 31

needing cam compression info

Greetings,
there's no such thing as a stupid question rite? Ok, I need some numbers please if possible. Does anyone know the stock cam duration @.050? Also what is lobe separation?
And final question; what is/ how the heck does one figure out the compression ratio static/dynamic??
Any & all help is greatly appreciated. thanks for your time & help. Btw- this is regarding a '99 Chevy blazer 4.3lvortec.

09-07-2018, 11:10 AM

LesMyer

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Join Date: Oct 2014

Location: North Central Indiana

Posts: 4,074

Stock roller camshaft for Blazer
Brand: Sealed Power
Manufacturer's Part Number: CS-1572
Cam Style: Hydraulic roller tappet
Duration at 050 inch Lift: 191 int./195 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.414 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.428 in.
Lobe Centerline (Exhaust) 116 Deg.
Lobe Centerline (Intake) 106 Deg.
Lobe Separation 111 Deg.
Overlap 32 Deg

Last edited by LesMyer; 09-07-2018 at 11:25 AM.