55.2-59 Casting numbers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**popeyestruck** · 06-19-2022, 12:51 PM

I just checked my block casting number and its 3837004 I looked it up and they are 56 numbers one one site and 55-57 numbers on another. My truck is a 59. Is there any difference I should know about between my 59 and the earlier numbers? Will the parts on both motors interchange or were there changes from year to year?

**MJN** · 06-21-2022, 09:46 AM

3837004 was used from 55-57, 235ci.
Shouldn't be any issue with using this in your '59.
Post the numbers that are stamped just behind the distributor and that will tell exactly what it was installed in originally.

**mr48chev** · 06-21-2022, 04:05 PM

MJN nailed it.

Check the serial number on the block This list goes to 57 for 235 engines http://chevy.oldcarmanualproject.com/models/engine.htm

If you scroll down to 37/83 it shows how to figure out the engine serial number on a 59.

The 59 block should have an F or T, 3 digit number denoting month and day and a letter denoting the model it was built for. This is the engine serial number page.

**popeyestruck** · 06-21-2022, 06:58 PM

F822HE it looks like but its pretty dirty

**mr48chev** · 06-21-2022, 07:39 PM

Your original assumption seems to be correct. 57 engine built in Flint Michigan on August 22 and a regular production engine.

One has to believe that that was what a former owner found when they went looking for an engine to replace the one that was in it.

06-19-2022, 12:51 PM	#1
popeyestruck Senior Member Join Date: May 2022 Location: Longwood 59 chevy Posts: 317	Casting numbers I just checked my block casting number and its 3837004 I looked it up and they are 56 numbers one one site and 55-57 numbers on another. My truck is a 59. Is there any difference I should know about between my 59 and the earlier numbers? Will the parts on both motors interchange or were there changes from year to year? Last edited by popeyestruck; 06-20-2022 at 05:11 AM.

06-21-2022, 09:46 AM	#2
MJN Registered User Join Date: Feb 2000 Location: Maquoketa, Ia/ Orr, Mn Posts: 3,051	Re: Casting numbers 3837004 was used from 55-57, 235ci. Shouldn't be any issue with using this in your '59. Post the numbers that are stamped just behind the distributor and that will tell exactly what it was installed in originally. __________________ '51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com

06-21-2022, 04:05 PM	#3
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,711	Re: Casting numbers MJN nailed it. Check the serial number on the block This list goes to 57 for 235 engines http://chevy.oldcarmanualproject.com/models/engine.htm If you scroll down to 37/83 it shows how to figure out the engine serial number on a 59. The 59 block should have an F or T, 3 digit number denoting month and day and a letter denoting the model it was built for. This is the engine serial number page. Attached Images __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

06-21-2022, 06:58 PM	#4
popeyestruck Senior Member Join Date: May 2022 Location: Longwood 59 chevy Posts: 317	Re: Casting numbers F822HE it looks like but its pretty dirty

06-21-2022, 07:39 PM	#5
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,711	Re: Casting numbers Your original assumption seems to be correct. 57 engine built in Flint Michigan on August 22 and a regular production engine. One has to believe that that was what a former owner found when they went looking for an engine to replace the one that was in it. Attached Images __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.



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