Timing setting question
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Senior User
Joined: Jul 2009
Posts: 120
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From: Sainte Genevieve, Mo
Timing setting question
Hi guys. Im fairly new to engine building. I have 1 previous build on a 300 straight six with some performance upgrades. It was 5 years ago and pulls like a tank still. 6500lb class at fairs.
Now Im rebuilding a 302 that is .040 over, stock 2bbl, tranny etc.
My questions is this. I have purchased an after market cam 290/300 adv. duration .472/496 lift 112 degree lobe to be specific - - do I need to do anything special to the timing? what should I set it at for normal driving.
My 300 I just set it to what Im doing with it at the time. be it pulling the sled, hauling rock or ?? or playing in mud.. It could always be better but the truck has a life of beating around nothing like my 302 . The 302 is to be driving daily up and down highways.
Or should I start out at about 8-10 degrees like stock and just adjust as needed?
any help would be appreciated.
Thanks
C
Now Im rebuilding a 302 that is .040 over, stock 2bbl, tranny etc.
My questions is this. I have purchased an after market cam 290/300 adv. duration .472/496 lift 112 degree lobe to be specific - - do I need to do anything special to the timing? what should I set it at for normal driving.
My 300 I just set it to what Im doing with it at the time. be it pulling the sled, hauling rock or ?? or playing in mud.. It could always be better but the truck has a life of beating around nothing like my 302 . The 302 is to be driving daily up and down highways.
Or should I start out at about 8-10 degrees like stock and just adjust as needed?
any help would be appreciated.
Thanks
C
Cranky Old Guy
Joined: Mar 2008
Posts: 3,562
Likes: 6
From: Raphine, Virginia
You've got it right, 8-10 to get it started. You already know more advance as long as it isn't pinging for performance, less for economy. With aftermarket cam I'd tune it with a vacuum gauge and just use the timing light for a referance.
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