I got a 327 I believe and am trying to figure out exactly what the thing is. The number on the front pad by water pump is TOII9HCH. I cant seem to find anything that matches this info. It has the double hump heads and a cast iron square bore gm intake. Any info on the intake would be nice to as I havent run into one like this before. It has a holley style bolt pattern. Anyhow any help is much appreciated, greezy
Anything before '69 should have a two letter code instead of three. CH shows up as being a 283, and HC is a 327.
The best I can figure, it is from the Tonawanda plant, made on January 19th, but I cannot find an HCH code, there are 2 different HC codes in my source list, one is a 1965 327 4 barrel, 275 horse. The other is a 1969 350 2 barrel, 250 horse. Here is a link to where I got my info. http://www.nastyz28.com/chevy-engine-code-stampings.php
That's what I was thinking too. Check the Mortec site to be sure. Also the 275 wouldn't have a Holley bolt pattern. Whatis the cast number of the intake? You should be able to tell date by the codes on the Block, intake, and heads.
I cant verify this for sure but I have a 327 with a T0620HQH stamping and have been told that the last H was put on Holley equipped engines.
I had it figured as this T= tonowanda plant 01-19for day of manufacture and hch should tell me what it is, what it was mated to and car right? There is a couple of problems though. First being that it is not 01-19, it is a definate oi(eye)- i (eye)9. They are definatly not ones they are letter I's. Next being that the hch hasnt come up anywhere for me. I seen the hc's and ch's but not hch. What about the last h being for a holley equipped motor? Anyone know anything else about that? All the h codes I have seen have only been two letters not three so that might make sense. I'll get the intake numbers tomorrow. I know it could have come from anywhere but if it helps narrow things down it may be worth it. Thanks for the help
what is the block casting number? what is the block casting date? both are on the back, above the bellhousing the number one looks like the letter eye, that's how they stamped them. the 4 numbers are really numbers, it was assembled on january 19th of some year, in tonnawanda NY
It was not uncommon for I to be used in place of 1 on engine stamps due to a broken or lost die. get the casting numbers from the block and heads
I found this site that shows in 66 they used an extra H or R to indicate Holley or Rochester carbed engines Im interested in your casting numbers as well My block is a 3858180 http://www.chevy-camaro.com/chevy-camaro-chevy-engine-suffix-codes.asp?group=4
That is what my casting number looks like. The numbers seem to be roughed up a bit but thats my guess on them. Still trying to remember to get the date and intake numbers. Thanks for the help though guys.
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