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Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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Mod | | | Forums66 Topics128,018 Posts1,055,260 Members48,417 | | 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!
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| | | | Joined: Apr 2015 Posts: 3 New Guy | | New Guy Joined: Apr 2015 Posts: 3 | i have a 69 1/2 ton with a 307 and it runs good but does use oil and smoke a litlle but not to much. what could be some of the causes for that? | | | | | Joined: Oct 2012 Posts: 233 'Bolter | | 'Bolter Joined: Oct 2012 Posts: 233 | valve guide wear, worn cylinder bore, worn piston rings are a few causes of oil consumption.
1953 Chevy 3100 261 and SM420 53Chevy 31001953 Mack Firetruck 1972 Porsche 911 1986 Honda Goldwing
| | | | | Joined: Dec 2001 Posts: 14,522 Moderator: Welcome Centre, Southern Bolters, Legion Hall | | Moderator: Welcome Centre, Southern Bolters, Legion Hall Joined: Dec 2001 Posts: 14,522 | ...if it smokes worse after it sits and you first start it up my vote would be the valve guides are worn out. If it does it going down the road then I'd say the rings are shot. | | | | | Joined: Oct 2012 Posts: 57 Shop Shark | | Shop Shark Joined: Oct 2012 Posts: 57 | maybe there is sludge blocking the return holes in the heads.. i have seen that cause smoking in a other wise good engine | | |
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