Help identify 6 cylinder engine - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**jlmerie** · 03-22-2014, 04:40 PM

What size is this 6 cylinder engine? It is in a 1981 Chevy truck. Even though it is a six cylinder it is loaded with options. I think it might even have been a Silverado truck. Any help appreciated.

Irish1941 · 03-22-2014, 04:55 PM

Should be a 250 in '81. And it's does have some options.
A/C is a rare one!

Old Truck Man · 03-22-2014, 05:04 PM

Its an intergrated head 250. Your appears to be the 2 bbl version that head was prone to cracking. You can change valve cover and throw away a lot of that plumbing. You can even install a older head.

Gumby · 03-22-2014, 06:43 PM

Quote:

Originally Posted by Old Truck Man

and throw away a lot of that plumbing

GM did a good job of hiding the engine under lots of spaghetti, had to make the EPA guys happy........

Keith Seymore · 03-23-2014, 12:55 PM

Agree on all counts.

Depending on how desperate you are to know about the truck, you can send $50 and the VIN to the GM Heritage Center and they will give you the original factory invoice for that specific truck. It will show the exact option content and pricing for that truck.

Link: http://www.gmmediaarchive.com/

K

Tx Firefighter · 03-22-2014, 06:01 PM

Also known as the mighty 4.1L engine....

03-22-2014, 04:40 PM	#1
jlmerie Registered User Join Date: Sep 2005 Location: Colorado Posts: 1,077	Help identify 6 cylinder engine What size is this 6 cylinder engine? It is in a 1981 Chevy truck. Even though it is a six cylinder it is loaded with options. I think it might even have been a Silverado truck. Any help appreciated. Attached Images __________________ James

03-22-2014, 04:55 PM	#2
Irish1941 Registered User Join Date: Nov 2012 Location: Los Angeles, CA Posts: 450	Re: Help identify 6 cylinder engine Should be a 250 in '81. And it's does have some options. A/C is a rare one!

03-22-2014, 05:04 PM	#3
Old Truck Man Registered User Join Date: Feb 2014 Location: Pocahontas Arkansas Posts: 684	Re: Help identify 6 cylinder engine Its an intergrated head 250. Your appears to be the 2 bbl version that head was prone to cracking. You can change valve cover and throw away a lot of that plumbing. You can even install a older head.

03-23-2014, 12:55 PM	#5
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,237	Re: Help identify 6 cylinder engine Agree on all counts. Depending on how desperate you are to know about the truck, you can send $50 and the VIN to the GM Heritage Center and they will give you the original factory invoice for that specific truck. It will show the exact option content and pricing for that truck. Link: http://www.gmmediaarchive.com/ K __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

03-22-2014, 06:01 PM	#6
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Help identify 6 cylinder engine Also known as the mighty 4.1L engine.... __________________ I'm on the Instagram- @Gearhead_Kevin



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