1979 267 / 350 engine ! Danny Coleman
read casting numbers and research on the web. Just Google small block Chevy heads castine numbers. These numbers are under the valve covers so you will have to take one off.
Actual olds heads casting numbers are underneath the valve covers
It is stamped into the top of the heads where the valve springs are.
Under the valve cover where the valve springs are.
The 2000 5.7 Vortec heads are generally similar to the 1999 5.7 Vortec heads, but there may be some differences in casting numbers and minor design features due to manufacturing updates. It's essential to check the specific casting numbers on the heads for compatibility. Additionally, variations in valve sizes and ports can occur between different production years. Always verify the specific application and requirements for your engine build to ensure proper fitment.
Thay are all different. Need the year and cylinder head casting # It could be 60cc.65cc,70cc it could be anything. Ask your question again with this info. 1989 Chevy 350 t.b.i I still need the casting numbers that are under the valve cover. They will be stamped in the head were the rocker arms are. Most of the heads for that year were 64cc. but need casting # to make sure.
for all out horsepower the splayed valve Chevy head, or the sb2 or 18 degree after that
NO... You MUST remove the heads and take them to a machine shop and have the valve guides replaced. No other way.
write down the casting number under the valve cover and compare it to the list of chevy head castings at mortec.com
Remove the valve cover and you will see it stamped into the top of the head.
The only difference between the two Chevy heads is the size of valve they were designed to fit. Either size will work correctly on all valves, though.
If you have the heads off then the small valve will be the exhaust. Now if the heads are still on the block then remove the valve cover and look at the valve springs. Starting at the front of the head and moving towards the rear the valves will be in this order. E I I E E I I E The E stands for exhaust and the I stands for intake.