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7 members (Nick in Manitou, NJC, Mike in Sycamore, Bill Hanlon, Ponchogl, sron48, rfs56trk),
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guests, and
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robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,137 Posts1,056,747 Members48,454 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Sep 2002 Posts: 25 New Guy | | New Guy Joined: Sep 2002 Posts: 25 | what setting do you set the timing light advancement on for a 228. Is it 6 degrees or 3 degrees? This is a GMC engine.Hope someone has some info.
45 gmc above the 49th | | | | | Joined: Jun 2011 Posts: 1,901 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 1,901 | here's a chart of dizzy spec's that includes back to the fifties if it will help... the 228 is near the bottom, hope it helps Dizzy specs Here's the old manual project link for a 48-51 as well 48-51 manual
Last edited by CASO; 04/06/2012 5:43 AM.
Give me ambiguity
or give me something else
| | | | | Joined: Apr 2005 Posts: 1,107 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 1,107 | i set mine on the ball which is 5 degrees. | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Make sure it's hot, if it ever pings, slowly retard 'til that stops.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Jun 2008 Posts: 1,388 Shop Shark | | Shop Shark Joined: Jun 2008 Posts: 1,388 | Holy Cow. I grew up in scenic Red Deer, and went to LTCHS. It's a small world on the old interwebs. | | |
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