One of the big blocks I have is a 1969 model year 435 horse 427. It is
not an engine with matching dates, but the block is a 4 bolt with:
3955270 casting date I 6 8 ( Nov 6, 1968 )
I found this information 3955270 427 69 335-435HP 4-Bolt
But the serial number is
serial number CCE 952320
I have never been able to find out what vehicle used that code. One of the possibilities, is that it is a COPO engine, or a warranty replacement engine. Can anyone help me identify the engine? The engine has a happy home, but I would like to know what vehicle it came from.
The crank I have is not reground, but is forged,cross drilled, and grooved. I was not
aware that Chev grooved the big block cranks.
Are the closed chamber square port heads of any value to collectors?
Could I get away with running the 12.5:1 pistons with 300cc aluminum heads on the street?
I was going to use the Chevy intake manifold ( casting number 3933163 ),on one of my 454s, is it too valuable to be doing this?
I have looked in a lot of places and have not been able to get any answers.
CE engines were over the counter or warranty pieces. We have one in our 396 car. COPO engines had a two letter code. In the Chevelle it was MP for the automatic application and MQ for the 4 speed engine.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!