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1957 Belair wagon, 51 HenryJ
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Discussion Starter · #1 · (Edited)
I am helping a friend do a 90 van 454. The current heads # 14092360 are 116 CC's and are the peanut style. I have a set of 473328 - 366 truck heads but I cannot find any spec's on the CC's etc. He can get a complete set of # 3993820 heads(200$) that are 113 CC's, which will bring up the CR a bit. My question is does anyone have spec's on the 328's and how do they compare to the 820's. So far I have not been able to find out the CR of this engine, so if anyone knows it would help us. The guy just wants a nice BB in his ElCamino, thanks, Henry.
 

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Here is what I found on that casting #.

Chevy Big Block Cylinder Head Codes (ALL)

Casting No Years CID Intake Exhaust Chamber CC
330864 1970-81 366/427/454 2.06 1.72 Open
330865 1970-84 366/427/454 2.06 1.72 Open
336765 1973-84 427/454 2.06 1.72 Open
336781 1973-85 454 2.06 1.72 Open 113
343771 1968-85 366/427/454 2.06 1.72 Open
343772 1976-84 366/427/454 2.06 1.72 Open
343783 1975-78 454 2.06 1.72 Open
346236 1975-87 454 2.06 1.72 Open 113
346238 1975-87 454 2.06 1.72 Open 113
353049 1970-73 402/454 2.06 1.72 Open 113
473328 1968-85 366 2.06 1.72 Open

I read somewhere that these were 112 cc heads.
 

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Discussion Starter · #3 ·
Thanks Gregory, nowhere on any sites do they give the info on the CC's etc of the 328's so I guess I will have to CC my heads and make a decision after, good day. When I go on the mortec link I have it says it is not available, does someone have a working link?
 

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Thanks Gregory, nowhere on any sites do they give the info on the CC's etc of the 328's so I guess I will have to CC my heads and make a decision after, good day. When I go on the mortec link I have it says it is not available, does someone have a working link?
Henry, heres what I found

I have a message from their host (hostgator.com), "The gator268 server is up and running. According to the whois information for mortec.com, it appears to be pointed to that server."

Their IP address does not, however, respond to a ping. My insides tell me that they (mortec) are either going through a major update of their server or they have crashed really hard and are attempting to rebuild.

Hope thy come back online as I too appreciate the wealth of knowledge stored on their site
 

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Discussion Starter · #5 ·
Thanks Randy I also hope they get back up and running, good day.
 
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