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| | | Forums66 Topics128,108 Posts1,056,237 Members48,437 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jan 2006 Posts: 67 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2006 Posts: 67 | hey yall. ok, question of the day- i am still enough of a morron that i can't figgure out how to identify the engine in my truck. its not the origional engine, but a later 6-cylinder from a car maybe?? the guy who sold it to me didnt know what the engine was, but knew it was rebuilt in the last few years nd had almost no miles on hte rebuild. it runs great, but i would like to know what i have for future stuff. all the numbers i have( hte truck isn't at my house) are:
on the exaust manifold- 3923418 GM34
and on the right side(from the cab) 348675 GM5 and sk264
thats every number i could find on the engine. i don't know how much of a later model than it is of the truck(63) so i dont know where to start scearching, and all the sites i have found either are for V8's or use the year of the truck to identify the engine.( i have gone through the links page, but i didnt get what i needed) any help would be appriciated. thanks
red (mostly) 1963 chevy shortbed stepside
| | | | | Joined: Dec 2004 Posts: 452 Member | | Member Joined: Dec 2004 Posts: 452 | Butler\'s shows the block casting number 348675 to be from a 250 of '73-'85 vintage. Two other sites found in a web search for that number show it as a '73-'76 250. There should be a serial number stamped on a pad just aft of the distributor. The suffix from this number can help identify the engine and the type of vehicle from which it came.
Curt ---- 1953 Chevy 6400, 1957 Chevy 2dr Sedan --"Mediocrity is easy, the good things take time"
| | | | | Joined: Jan 2006 Posts: 67 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2006 Posts: 67 | so, we're saying its most likely a '73-'76 250??? if i know its a 250, the year isnt important if i know the year range, right?( for buying parts ect)
red (mostly) 1963 chevy shortbed stepside
| | | | | Joined: Dec 2004 Posts: 452 Member | | Member Joined: Dec 2004 Posts: 452 | To further narrow the year range, you'll have to find the serial number suffix, and/or the block casting date code.
Curt ---- 1953 Chevy 6400, 1957 Chevy 2dr Sedan --"Mediocrity is easy, the good things take time"
| | | | | Joined: Jan 2001 Posts: 662 Shop Shark | | Shop Shark Joined: Jan 2001 Posts: 662 | Get the last two or three digits of the stamped # next to the distributor, then visit http://no25.chuckthetruck.com/page3.html | | |
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