Engine ID - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**oldwagon** · 07-08-2022, 07:35 PM

Probably barking up the wrong tree, but is there any way of identifying an engine that still has all the equipment installed and in the vehicle, other than checking the VIN number?

kipps · 07-08-2022, 07:38 PM

what do you mean by 'identify' the engine? Are you referring to the engine class, bore, and stroke size? Or to the exact RPO production code associated with that engine?

**oldwagon** · 07-09-2022, 07:33 AM

Wanting to identify as a 305 or 350.

geezer#99 · 07-09-2022, 08:15 AM

Always a way. Just involves a little looking in the right places.
Look on the link.
You’ll find number locations pics and what the numbers mean.
Some numbers like casting code are a little hard to see but with the right tools you’ll see them.

https://www.mortec.com/

Just call me Sean · 07-09-2022, 11:49 AM

I don't know what year they started, but some blocks have it marked on the drivers side rear upper surface. This is marked 5.7.

**jocko** · 07-09-2022, 01:52 PM

I like to reference the block stamping at the front passenger side where head and block meet. The 2-3 digit letter code is a good indication of size and application - recommend use this site for ref pics, and about 3/4 of the way down the page is the index for the letter codes that you can click on to see what yours is. https://www.nastyz28.com/chevy-engin...-stampings.php

**oldwagon** · 07-09-2022, 08:24 PM

Thanks fellow members. You have given me plenty info to move forward. Appreciate it.

**oldwagon** · 07-09-2022, 08:25 PM

5.7 would be a 350, correct?

kipps · 07-09-2022, 08:40 PM

Quote:

Originally Posted by oldwagon

5.7 would be a 350, correct?

Yes. There's 61.02 cubic inches in a liter. There's some rounding involved, since the actual displacement of a 350 is 349.67 cubic inches, or 5.72 liters.

07-08-2022, 07:35 PM	#1
oldwagon Registered User Join Date: Feb 2003 Location: Mulvane, Ks. Posts: 756	Engine ID Probably barking up the wrong tree, but is there any way of identifying an engine that still has all the equipment installed and in the vehicle, other than checking the VIN number?

07-08-2022, 07:38 PM	#2
kipps Registered User Join Date: Jul 2014 Location: North-central Virginia Posts: 1,104	Re: Engine ID what do you mean by 'identify' the engine? Are you referring to the engine class, bore, and stroke size? Or to the exact RPO production code associated with that engine? __________________ 1987 C6P V20 truck, 2010 LMG 5.3, AFM delete, 2010 Camaro exhaust manifolds, 1997 nv4500, 1991 np241c, hydroboost, 2005 14bff axle & driveshaft, drop-n-lock gooseneck, 4.10 gears, stock suspension, rims, and tires. Still a work in progress. Any questions or suggestions are welcome!

07-09-2022, 07:33 AM	#3
oldwagon Registered User Join Date: Feb 2003 Location: Mulvane, Ks. Posts: 756	Re: Engine ID Wanting to identify as a 305 or 350.

07-09-2022, 08:15 AM	#4
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,731	Re: Engine ID Always a way. Just involves a little looking in the right places. Look on the link. You’ll find number locations pics and what the numbers mean. Some numbers like casting code are a little hard to see but with the right tools you’ll see them. https://www.mortec.com/

07-09-2022, 01:52 PM	#6
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,975	Re: Engine ID I like to reference the block stamping at the front passenger side where head and block meet. The 2-3 digit letter code is a good indication of size and application - recommend use this site for ref pics, and about 3/4 of the way down the page is the index for the letter codes that you can click on to see what yours is. https://www.nastyz28.com/chevy-engin...-stampings.php

07-09-2022, 08:24 PM	#7
oldwagon Registered User Join Date: Feb 2003 Location: Mulvane, Ks. Posts: 756	Re: Engine ID Thanks fellow members. You have given me plenty info to move forward. Appreciate it.

07-09-2022, 08:25 PM	#8
oldwagon Registered User Join Date: Feb 2003 Location: Mulvane, Ks. Posts: 756	Re: Engine ID 5.7 would be a 350, correct?



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