engine block & cylinder head identification

[56hotrodred]

Well it has been a while since I have posted as I have been back at work since the snow melted.

I have been working slowly at getting the body work done with the front and back fenders off, sanded and in at the body shop now. I hope to have them back by the end of summer and then get the box completely sanded down. I am buying an Eastwood soda blaster this summer to help me get all the paint off the cab and the rest of the box.

After trying to work in my un-insulated shop last winter I am also having someone come in and finish portions of my shop interior so I can work in a little more comfort this coming winter. The rest of it I can complete. This will however eat into my limited budget so may delay the truck getting finished for a bit but should be worth it.

In my search for parts this summer I have recently acquired a 327 block (casting # 3858174) that is out of a 1964-67 vehicle rated at 275 to 350 hp and has 2 main caps/bearings.

The heads that came with it (casting # 3917291) are either out of a 1967-69 vehicle and off of a 302 or 327 with 2.02 intake and 1.6 exhaust. There is some confusion here as the casting number is the same as a 350 with 1.94 exhaust and 1.5 exhaust - forgot to write done year. I like the first option but need to know for sure what the heads are from before I commit to re-building.

For those of you in the know does this sound like a desirable engine/head combination for my build? I am doing a resto-mod with my 56 shortbox big back window step side that is sitting on a 1980 1/2 ton frame. I am also hoping to use a Turbo 400 trany that I have eventually putting a gear vendors overdrive unit on it.

Any assistance would be appreciated especially with the proper head identification. As said I think the 302/327 head with the larger intake and exhaust would be the more desirable. The fellow I got it all from says that the heads are out of a corvette and are high performance.

I am going to do some more searching on the heads but I think I am pretty happy with the 327 although I wish it was a 4 bolt main. Should that be of any concern? Was there any 4 bolt main 327's?

Thanks in advance for any assistance.

56hotrodred