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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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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 2011 Posts: 2,951 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 2,951 | Just finished a dry compression test. Took pics of my plugs too. Engine and plugs were stone cold when I pulled the plugs. Plug #3 looked slightly darker than the other 5 plugs.
All plugs were out and my wonderful wife cranked the engine for 4 complete bumps of the gauge needle. Here are the compression numbers. Factory service manual says a 230ci should have 130# and I imagine the 250 would be the same.
Cylinder #1 - 125
Cylinder #2 - 125
Cylinder #3 - 110
Cylinder #4 - 125-130
Cylinder #5 - 125
Cylinder #6 - 120
HERE is the link to my photobucket pics showing the plugs. | | |
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