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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!
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#43805 10/23/2002 2:22 PM | Joined: May 2002 Posts: 17 Member | | Member Joined: May 2002 Posts: 17 | Does anyone know what the timing for a 71 250 Six Cd. is? Thanks for your help  | | |
#43806 10/23/2002 2:39 PM | Joined: Dec 2001 Posts: 43 Member | | Member Joined: Dec 2001 Posts: 43 | I think its 4 0r 6 BTDC. Someone will know.
57 3100 235 3 spd
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#43807 10/23/2002 8:05 PM | Joined: Mar 2001 Posts: 384 Shop Shark | | Shop Shark Joined: Mar 2001 Posts: 384 | 4deg. BTDC w/vacuum advance plugged.
Buzz'n Half Dozen
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#43808 10/23/2002 8:59 PM | Joined: May 2002 Posts: 17 Member | | Member Joined: May 2002 Posts: 17 | Thanks  | | |
#43809 10/24/2002 8:09 PM | Joined: Jan 2001 Posts: 230 Shop Shark | | Shop Shark Joined: Jan 2001 Posts: 230 | Rins better if you set it to total advance of 30 degrees or so . substantial increase in power and usually runs a bit cooler too .
This worked out to almost 10 BTDC in my 230 .
There should be _no_ vacuum coming down the advance pipe @ idle if all is well with your carby
-Nate
There is no problem so difficult it cannot be overcome by generous application of brute force & ignorance
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