head Id - The 1947 - Present Chevrolet & GMC Truck Message Board Network

09-25-2007, 10:54 AM

Scott68-93-97

Registered User

Join Date: Jul 2006

Location: Fair Oaks, CA

Posts: 475

Re: head Id

Quote:

Originally Posted by 67_C-30

458642.....75-84...350..........350
468642.....76-up...350/400

If they aren't cracked I'd keep them. They aren't anything special, but def not junk. They would have hardened valve seats compatible with unleaded fuel unlike older heads.

The difference in the 468642 between the 400 and 350 is the 400 has steam holes drilled in the heads its a small 1/8 hole 2 in between each cylinder.

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1968 Short Fleet 350/700r4
http://67-72chevytrucks.com/vboard/s...d.php?t=249435
1997 Bagged XtdCab Vortec350/4L60e
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1993 XtdCab Longbed 4x4 6.5Turbo/NV4500 "Daily Driver"

1985 Toyota XtdCab 4x4 22re/W-56/Dual T-cases, Doug Thorley Header, Homebrew front and rear spring packs, Tons of Mods to suspension and drivetrain, 35" boggers, coming soon ARB's and 5.29's, Possible 4.3/700r4 swap

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