Did the 1971 402 come with spark plug heat shields? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**71CHEVYSHORTBED402** · 10-21-2015, 11:18 PM

Seen them on a few, but from what I can tell from the 1979 parts book, every shield mentioned excludes 396 and 402.

http://www.gmpartswiki.com/getpage?pageid=21374

John Pasinski · 10-22-2015, 06:31 AM

Not sure if this will help you. My '72 402 originally came with the heat shields.

**70cst** · 10-22-2015, 07:04 AM

I'm thinking yes - others?

68 50th · 10-24-2015, 02:16 AM

Refreshing my memory now looking at the pics I took when restoring the truck almost 10years ago.
This is how the 402 engine was equipped regarding spark plug heat shields.
Only the plugs to cylinder 3,5 and 4,6 had them.
Not saying this is the original set up but it was how the otherwise pretty much untouched engine looked like.

John Pasinski · 10-24-2015, 08:03 AM

Mine has all (8). Also, when I've seen them in catalogs, they sell as (8) to the set.

**71CHEVYSHORTBED402** · 10-24-2015, 12:57 PM

Quote:

Originally Posted by John Pasinski

Mine has all (8). Also, when I've seen them in catalogs, they sell as (8) to the set.

They all the same John? I've seen one block where some were shorter than the others, to make room for the heat shield. Don't know if it was factory correct.

John Pasinski · 10-24-2015, 05:05 PM

I typed 1972 chevy big block spark plug heat shields into the search bar and lots-O-hits came up.

I even saw a NOS set on E-bay.

As far as all the same size? I don't believe mine are. I think (2) are larger than the others. Although; the few I looked at online seemed all the same size.

**71CHEVYSHORTBED402** · 10-24-2015, 07:34 PM

Quote:

Originally Posted by John Pasinski

I typed 1972 chevy big block spark plug heat shields into the search bar and lots-O-hits came up.

I even saw a NOS set on E-bay.

As far as all the same size? I don't believe mine are. I think (2) are larger than the others. Although; the few I looked at online seemed all the same size.

I've been contemplating the NOS set. They don't seem to be able to produce a part number. Yes, all on the web are the same. I don't know if they're correct. At this point it doesn't jive with the parts book.

10-21-2015, 11:18 PM	#1
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,320	Did the 1971 402 come with spark plug heat shields? Seen them on a few, but from what I can tell from the 1979 parts book, every shield mentioned excludes 396 and 402. http://www.gmpartswiki.com/getpage?pageid=21374 __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025

10-22-2015, 06:31 AM	#2
John Pasinski Registered User Join Date: Aug 2007 Location: orlando Posts: 456	Re: Did the 1971 402 come with spark plug heat shields? Not sure if this will help you. My '72 402 originally came with the heat shields. __________________ A man's thoughts devise his ways; but it's GOD that directs his steps.

10-22-2015, 07:04 AM	#3
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,373	Re: Did the 1971 402 come with spark plug heat shields? I'm thinking yes - others? __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

10-24-2015, 02:16 AM	#4
68 50th Senior Member Join Date: Jul 2004 Location: Sweden Posts: 833	Re: Did the 1971 402 come with spark plug heat shields? Refreshing my memory now looking at the pics I took when restoring the truck almost 10years ago. This is how the 402 engine was equipped regarding spark plug heat shields. Only the plugs to cylinder 3,5 and 4,6 had them. Not saying this is the original set up but it was how the otherwise pretty much untouched engine looked like. Attached Images __________________ Mats.. ---------------------------------------------------- 1971 Cheyenne Super Custom Camper 475CBB/TH400/AC 1992 Silverado Sport Truck 1988 Silverado 2500 Ext Longbed 4x4 2001 GMC Sierra SLT 4x4 1990 Chevrolet K3500 1965 Pontiac Grand Prix 1980 Z 28 350/4-speed/AC/T-top 1980 Camaro Coupe V6/3-speed 1979 Buick Century Wagon

10-24-2015, 08:03 AM	#5
John Pasinski Registered User Join Date: Aug 2007 Location: orlando Posts: 456	Re: Did the 1971 402 come with spark plug heat shields? Mine has all (8). Also, when I've seen them in catalogs, they sell as (8) to the set. __________________ A man's thoughts devise his ways; but it's GOD that directs his steps.

10-24-2015, 05:05 PM	#7
John Pasinski Registered User Join Date: Aug 2007 Location: orlando Posts: 456	Re: Did the 1971 402 come with spark plug heat shields? I typed *1972 chevy big block spark plug heat shields* into the search bar and lots-O-hits came up. I even saw a NOS set on E-bay. As far as all the same size? I don't believe mine are. I think (2) are larger than the others. Although; the few I looked at online seemed all the same size. __________________ A man's thoughts devise his ways; but it's GOD that directs his steps.



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