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Labor Day Putting down your wrenches or time for
MORE wrenching? 
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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!
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| | | | Joined: May 2004 Posts: 191 Wrench Fetcher | | Wrench Fetcher Joined: May 2004 Posts: 191 | OK. So curiosity got the better of me and I tore down the 305 I have. Everything mics out standard. Very little wear. Block decodes as a 78-79 casting. The heads decode as 80-86 Lt. Truck. PO says it came out of an 84 C-10. My question is whether this is the original engine or a rebuild. Would a 78-79 block be used in an 84 production? The heads agree with the model year for sure. | | |
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