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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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#75264 03/22/2007 10:43 PM | Joined: May 2005 Posts: 13 Wrench Fetcher | | Wrench Fetcher Joined: May 2005 Posts: 13 | Does anyone know off hand what the engine options where for a 1966 gmc halfton? Checking into a truck the owner tells me it has a 250 in it, would this be correct for this truck? Or should I assume the engine was swapped out at one point, any info would be helpful to enlighten my foggy mind. thanks aaron | | |
#75265 03/22/2007 11:01 PM | Joined: Dec 2003 Posts: 975 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 975 | click here for the scoop... We had a 66 GMC with a 250/3 on the tree..Jolly's site should have all the info. | | |
#75266 03/23/2007 5:39 PM | Joined: May 2005 Posts: 13 Wrench Fetcher | | Wrench Fetcher Joined: May 2005 Posts: 13 | Thanks for the link 46 In progress alot of good information there. | | |
#75267 03/24/2007 3:04 AM | Joined: Jul 2001 Posts: 10 Junior Member | | Junior Member Joined: Jul 2001 Posts: 10 | I currenly own a 66 GMC 1/2 ton with bone stock original 250 inline 6 engine. The other 2 engines that were available were a 305 V6 and a 351 V6. Since the only inline 6 that was stock was the 250 you can tell for sure if this truck came standard with the 250 by the VIN. If it begins with an "I" then it came with the 250. The VIN plate is on the drivers side door jam at the very top of the jam. The 6066 site has all the information to decode the VIN. Also you can check engine spec tag which is by the drivers side air vent near the e-brake handle. It will give you specs on the stock engine. | | |
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