View Full Version : Magnum vs standard head pix
Mike Caldwell
February 25th, 2013, 08:05 PM
Anybody got a good side-by-side pix of two heads to show the difference?
There's a pair of heads on ebay but seller doesn't know difference and his pix don't show the exhaust ports.
Listing is "CHEVY/GMC 63-73 401 351 V6 TRUCK CYLINDER HEADS"
All he says is "These heads fit 2 ton gmc truck with a industrial v6 engine"
If there was a good pix to send him we might find out which he has.
Corts60
February 25th, 2013, 08:20 PM
If those are the ones listed for $800, I wouldn't pay that price whether they were magnum or not.
But, if you google gmc 351 magnum, click on the images tab and I'm pretty sure someone has a pic on there of them side by side.
6066gmcguy
February 25th, 2013, 08:38 PM
This would be the place to look:
http://67-72chevytrucks.com/vboard/showthread.php?t=316774
Mike Caldwell
February 25th, 2013, 10:04 PM
That's what I was looking for!
And no, not for $800, even if they are Magnum "just as good as new" heads.
http://i226.photobucket.com/albums/dd85/67_C-30/GMC%20V6%20pics%20305%20305E%20351%20401%20432%204 78%20Magnum/Pictures582.jpg
AHarman
February 25th, 2013, 10:26 PM
Yes, a good pair of used Magnum heads should go for ~$200.
Mike Caldwell
February 25th, 2013, 11:54 PM
Yes, a good pair of used Magnum heads should go for ~$200.
What's a good valve job cost? One for a Chevy was ~$300, but even adding them together leaves a lot of room under $800
Mike Caldwell
February 26th, 2013, 03:50 PM
Reply from seller:
"The only markings on the head is the casting number the date code and a M.The intake gasket listed for the magnum has the same pattern as these heads.If there is another way to indentify the heads i will be glad to ck it.Thanks"
Does the "M" mean "Magnum"?
I might have to consider making an offer --:confused:
bigblockv6
February 27th, 2013, 04:19 PM
The best way to determine which heads they are is by the part number cast in the rocker arm area, 66-72 magnum heads will have part #2421158, 73-74 Part #696030 or 696031
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