small block heads, 4027596 casting # any good??

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Hey guys i'm looking for some advice on heads for a small block. I'm putting a 360 in my scamp come spring and am wondering about these heads. They are casting # 4027596. I did a little reaserch and from what i was able to find they are hp. 360 heads, came on cop cars, trucks vans etc. Is that correct? I'm a young guy (17) and am looking to get all i can out of this motor but money is super tight. I've been working on a trade for my /6 stuff to a guy and he had these heads he wanted to trade. I know that j heads are really the best thing to get a hold of but really i don't have the money that most people want for them. I guess what i'm asking is are these heads worth doing anything with? I'd love to try and get a nice port and polish on them and bigger valves, somewhere in the area of 2.02/1.60's, you guys know the deal. Let me know what you think. Thanks in advance!!
Lots of helpful info as I am getting ready to put some on my 78 360 and hoping they will hold up with a blower
 
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