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#1 |
1 Wrench / 10 Knuckles
Join Date: Sep 2002
Location: Burlington Ontario
Posts: 179
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Cam timing 4 deg. or ?
I'm about to install a new Cloyes timing and gears. Should I set the gear to 4 deg. advance? Whats the advantage and disadvantages
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1970 GMC Custom Vortec Heads, Edelbrock Performer Intake, Crane 272 Energizer, Hedman Full Length HTC Headers 2006 Dodge Charger SRT8. 1/4 mile 13.3 1973 Z1 900 Kawasaki ( all original) |
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#2 |
Senior Member
Join Date: Dec 2001
Location: Redding,CA...USA
Posts: 4,736
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Thats a loaded question. You can get in piston to valve clearance problems when advancing the cam. What are the specs on the engine and drive train? Basically advancing 4º will increase the DCR and lower peak torque about 400 rpm..while lowering the peak HP by the same. If the cam is too big..then adv. will make it think its a little smaller
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#3 |
Green club
Join Date: May 2002
Location: Central CA
Posts: 1,059
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Jim is right, advancing the cam will close the exhaust valve quicker on the compression stroke and trap slightly more ar resulting in a better acting engine low speeds if the thing is slightly overcammed or one is in need of more lower end power curve.
My Ultradyne solid in the 427 is advanced 4* on the keyway, degreed in nice, and I have no problems whatsoever with valve to piston clearance. Every application should be checked though, do the tried and trusted clay on piston method just to be sure.
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71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears 70 SS396 Chevelle 427/200-4R/3.73posi 61 Lincoln Continental, black on black Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln |
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#4 |
Registered User
Join Date: May 2003
Location: brooksville-fla
Posts: 77
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many cams have the 4 deg ground in already-make sure before you go 4 more
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