427 block engine pad question
Thread Starter
Racer
Joined: May 2016
Posts: 492
Likes: 35
From: Norwalk, Ct
427 block engine pad question
Hi guys, I am looking at a 427 block. The casting number on the rear of the block is 3904351 which designates this as a 400 horse 427 but I am curious about the engine pad number. TO92IJC. I know this means that it is a Tonowanda engine built the second day of September bit I don't know what the I JC stand for?. I read somewhere that the IJ is a 385 horse block but I am not.sure.
Team Owner
Joined: Feb 2003
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From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
That block was used for ALL 427 engines in 67 for ALL corvettes and Impalas. JC is for a 427/400 though
Team Owner
Joined: Apr 2008
Posts: 31,809
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From: Middle TN by way of KY, OH, VA, IL, CA, FL, NY, SC, HI
Before you wonder; yes, Chevrolet used the capital I stamp as a numeral 1 on these stamps, so Larry's decoding is accurate.
Melting Slicks
Joined: Feb 2015
Posts: 2,570
Likes: 1,126
From: Huntsville AL & Hills of Southern TN
Have the block thoroughly inspected. Mine was ultrasonic and pressure tested. It may be good but you should be very suspicious why it’s not in the original car. The 942 block I bought clearly had a hard life, but it was a 4 bolt with correct date and the repairs were worth it. It may need a sleeve or something. My point is there’s usually a good reason it’s not in the original car. Once u do the deal I’d appreciate a PM to let me know what it’s worth. People often ask what these are going for. Best wishes
Thread Starter
Racer
Joined: May 2016
Posts: 492
Likes: 35
From: Norwalk, Ct
Have the block thoroughly inspected. Mine was ultrasonic and pressure tested. It may be good but you should be very suspicious why it’s not in the original car. The 942 block I bought clearly had a hard life, but it was a 4 bolt with correct date and the repairs were worth it. It may need a sleeve or something. My point is there’s usually a good reason it’s not in the original car. Once u do the deal I’d appreciate a PM to let me know what it’s worth. People often ask what these are going for. Best wishes
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Melting Slicks
Joined: Feb 2015
Posts: 2,570
Likes: 1,126
From: Huntsville AL & Hills of Southern TN
Price not surprising. Sounds like it’s a long block? He may negotiate if eager. He apparently knows what he has. Best wishes. Keep us posted.
Cruising
Joined: Oct 2022
Posts: 11
Likes: 2
Did you end up purchasing the engine?
Thread Starter
Racer
Joined: May 2016
Posts: 492
Likes: 35
From: Norwalk, Ct
No I did not buy the engine. I eas originally going to replace my factory block with this motor due to the fact that mine was decked, bored. 60 and has domed pistons equating to 12 to 1 compression from what I was told. I think at this point I will just work with what I have.