I don't know if they're vortex, or what that means, but they were used on 305's and 350's, '87 and up, and they have 1.94 intakes and 1.50 exhausts.
Actual olds heads casting numbers are underneath the valve covers
1996 Trucks but not all, look for casting numbers 062 or 960 on the heads
It is stamped into the top of the heads where the valve springs are.
The 350 engine that uses the 14102193 cylinder heads in conjunction with the 14057055 intake manifold is typically associated with the 1987 to 1995 Chevrolet TPI (tuned port injection) engines. These components were commonly found in various GM vehicles during that period, particularly in performance applications.
Cylinder head casting numbers are unique identifiers found on engine cylinder heads, used to determine the specifications and compatibility of the heads with specific engine blocks. These numbers can help identify the manufacturer, engine type, and model year, aiding in repairs, modifications, or restorations. When searching for replacement heads or performance upgrades, knowing the casting numbers is crucial for ensuring proper fit and function. Typically, they can be found on the top or side of the head and may require cleaning to be visible.
This number will tell you what year and what moter the heads will fit.There are books put out for this purpose.
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.
Those may not be the numbers needed for correct identification. I've seen that 3970010 on many, many blocks. The block number you need is usually stamped into a small id plate just ahead of the right cylinder head. The head numbers are under the rocker covers, and can be difficult to read if they are covered in sludge, which is common. With the correct numbers, you could go to a website such as: http://www.auto-ware.com/techref/castnum.htm to answer your question.
Chevrolet L99 "baby LT1" 4.3 liter 265cid V8 cast Iron heads from a '92-'96 caprice or impala
Find a book on casting numbers for chevys it will give you the year of the block the heads & the manifolds.
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.
they came with "186" casting number heads.........