timing what do you set at? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1968GMC · 04-18-2002, 01:10 AM

I just instaled a edelbrock cam in my 350 with hei. Edelbrock reccomens timing at 14 degrees, is this mandatory?

69 longhorn · 04-18-2002, 02:35 AM

Hotter cams like more initial timing. I saw an article on duration & initial timing(think it was in comp cams site). best to listen to what the eng wants,& go from there. On my 383,I run 16 initial/34 total,all in @ 2700,& 10 degrees on the vacumn can/plugged to full manifold fitting on the carb. I also have alumnium heads,loose converter,& 4.10 gears,so the eng never sees a heavy load in the lower rpm ranges. My comp XE268 is 224 intake/230 ex duration @ .050.........69 longhorn.

Gordo · 04-18-2002, 04:31 PM

Yeah,,,bump the timing up a little at a time until it pings while your driving then back off till it doesn't and your in.

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1971 C10 swb stepside 350/700R4/3.73posi
Killingworth, Connecticut

04-18-2002, 01:10 AM	#1
1968GMC love my truck Join Date: May 2001 Location: aylmer QC Posts: 648	timing what do you set at? I just instaled a edelbrock cam in my 350 with hei. Edelbrock reccomens timing at 14 degrees, is this mandatory?

04-18-2002, 02:35 AM	#2
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	Hotter cams like more initial timing. I saw an article on duration & initial timing(think it was in comp cams site). best to listen to what the eng wants,& go from there. On my 383,I run 16 initial/34 total,all in @ 2700,& 10 degrees on the vacumn can/plugged to full manifold fitting on the carb. I also have alumnium heads,loose converter,& 4.10 gears,so the eng never sees a heavy load in the lower rpm ranges. My comp XE268 is 224 intake/230 ex duration @ .050.........69 longhorn. __________________ http://community.webshots.com/user/hotrodhorn

04-18-2002, 04:31 PM	#3
Gordo Registered User Join Date: Jan 2001 Location: Killingworth, CT. USA Posts: 3,378	Yeah,,,bump the timing up a little at a time until it pings while your driving then back off till it doesn't and your in. ------------------ 1971 C10 swb stepside 350/700R4/3.73posi Killingworth, Connecticut __________________ 1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03) 1998 S10 short bed 2002 S10 Blazer 1942 Oldsmobile 1958 Massey Harris Pony 1951 Wife Killingworth, Connecticut May those who love us, love us, any of those who do not love us, may God turn their hearts. And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping. A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist.



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