BAMC1369 Posted May 10, 2012 Share Posted May 10, 2012 Ive checked everywhere and cant seem to find any info on my heads. I found all kinds of websites that show how to i.d all kinds of chevy heads but i cant seem to find anything on mine. My block code is 330817, the only number on the driverside head is 458642 The only thing i could find is someone told me maybe the heads are out of an old tow truck. If you guys could help me find anything on these heads that would be very helpful. Thanks. Quote Link to comment Share on other sites More sharing options...
Mo's70MCs Posted May 10, 2012 Share Posted May 10, 2012 458642.....75-84...350..........350 mortec Quote Link to comment Share on other sites More sharing options...
BAMC1369 Posted May 10, 2012 Author Share Posted May 10, 2012 Well thank you for finding the number. Does anyone know anythng about these? Good, bad maybe just scrap?? Quote Link to comment Share on other sites More sharing options...
Mike 57 Posted May 11, 2012 Share Posted May 11, 2012 Smog era head, 72to76 cc chambers some had small 1.72 intakes. Were the heads original to the engine? Quote Link to comment Share on other sites More sharing options...
BAMC1369 Posted May 16, 2012 Author Share Posted May 16, 2012 I have no idea if they where original, i would guess they where not. Quote Link to comment Share on other sites More sharing options...
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