C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Dec 29, 2006 | 10:19 PM
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Default 291 heads

Have a set of cast#3964291 heads. Was going to have them milled , but someone told me vette guys look for these. Any truth to that before i ruin them? They are not date matching. Thanks in advance for any help.
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Old Dec 29, 2006 | 10:28 PM
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not only vette guys, but early camero guys too.
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Old Dec 29, 2006 | 11:52 PM
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1969 chev/pass427/425, chevelle 396/375, 427/425, camaro ditto, corvette 427/435 L71, chevy 2 396/375. Good luck!
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Old Dec 30, 2006 | 05:42 AM
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Are they the 2.02s,and is there any other mods done to these heads?Could you please give me the date codes.I'd buy the pair,of course,but i need one head,close in date to my L79.Thanks,bud!
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Old Dec 30, 2006 | 11:13 AM
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Default 291 heads

According to my book these are 108cc closed chamber, Rectangular port, 2.19 ex., 1.72 int. Runner volume is325cc's. There aren't any mods to the heads as far as i know. Date codes are: left F 13 72, Right side B 5 71. They are still on 427 that i bracket raced a few times, the previous owner told me the only mods were a set of roller rockers.
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Old Dec 30, 2006 | 11:47 AM
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I'm screwed up,bud!!!!!Been knowing that,tho'.The 291 i need is for a 68 SB that came on the 327.Sorry.
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Old Dec 30, 2006 | 05:19 PM
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Moved from parts for sale to C3 Tech for better input as to the usefulness/desirability of these heads.
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Old Dec 30, 2006 | 09:40 PM
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No problem vettesbydesign, i should of specified they were for big block. Do they make 291 heads for small block? Moderator, sorry for putting in wrong post, new at this
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Old Jan 4, 2007 | 01:32 PM
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Default 291 heads "68"

Originally Posted by vettesbydesign
I'm screwed up,bud!!!!!Been knowing that,tho'.The 291 i need is for a 68 SB that came on the 327.Sorry.
I have a set 2.02's #3917291 Date A158

Last edited by Green 69; Jan 4, 2007 at 01:34 PM.
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