Remove the valve cover and you will see it stamped into the top of the head.
I don't believe 378999 is a valid casting number for a block or head, however, check the website,www.mortec.com, for SBC casting number information. For Chevy cylinder head specs, try this one: http://www.73-87.com/chevy_ids/sbheads.htm And, another good site for block suffix codes, block casting numbers, and cylinder head specs: http://www.chevy-camaro.com/chevy-camaro-engine-codes.asp Thanks, dave
where can i find my casting number on cylinder head for 1993 Honda civic
The Chevy casting number 460777 corresponds to a cylinder head that was produced in 1972. These heads were typically used on various Chevy small block engines during that time. To confirm specifics about the application, it's recommended to check additional identifying marks or numbers on the head.
58cc
The casting number is 0331
Under the valve cover where the valve springs are.
A small or big block Chevy have a casting number on the top of the block behind the driver side head. MorTec has Chevy casting numbers listed online.
write down the casting number under the valve cover and compare it to the list of chevy head castings at mortec.com
What is testing number for 1987 Ford Ranger 2.3 L
THE BLOCK CASTING NUMBER IS BEHIND THE CYL. HEAD. SORRY CAN'T REMEMBER WHICH HEAD. IT USUALLY IS A RAISED SEVEN DIGIT NUMBER. THE CYL. HEAD CASTING NUMBER REQUIRES REMOVING THE VALVE COVER AND CHECKING THE RAISED CASTING NUMBER ON TOP OF THE HEAD. YOU CAN CALL A DEALER OR A ENGINE REBUILDING SHOP AND GIVE THEM THE NUMBERS. THEY SHOULD BE ABLE TO GIVE YOU THE YEARS THAT CORRESPON TO THE CASTING NUMBERS.
If it has a 5.3 engine, first have the cylinder heads pressure tested. Heads with a casting # of 706 like to crack in the number 1 head bolt hole. If this happens, replace head.
for a 2.4 liter dohc quad 4 the casting number is 24574683-18