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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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| | | | Joined: Jul 2018 Posts: 6 New Guy | | New Guy Joined: Jul 2018 Posts: 6 | ive recently bought a 42 1 1/2 ton that's been repowered with a blueflame at some stage. engine serial number is R71332. data ive found on 53 to 57 blueflames the R prefix doesn't come up, so im thinking it must be later than a 57 engine? can anyone confirm what year it is or any other specs on it like hp etc. its in new Zealand so will no doubt have come from Canada originaly. thanks for any help | | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | The "R" probably indicates a Replacement engine code number. If it is 54 or later - find and post here these codesIf it is 53 (or, earlier), here are code locations.People can ID the head and block for you with those casting codes. You might have an interesting time registering that vehicle, if the original engine serial number was used for titling/registration (the original engine serial number was often used for titling/registration). | | | | | Joined: Jul 2018 Posts: 6 New Guy | | New Guy Joined: Jul 2018 Posts: 6 | thanks for that. my block casting number is GM 3836233, head casting is 3835913 , I havnt had time to pull rocker cover or starter motor to check on other casting numbers yet, and im having trouble figuring out what people refer to as "captains bars" on casting numbers? from the block casting number and checking on links ive seen im figuring its a early 1955 casting? thanks | | |
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