Aluminum Head / Cam Recommendation needed for 1972 Blazer K5

[74javelin]

Hello Folks,

I have a clean very original 1972 Chevy Blazer K5 4x4 and I looking to build up a period correct "looking" 350 in combination with doing a clean OEM style engine bay.

The engine in the truck currently is a tired 1979 Camaro 305 that has been in the truck since I bought it. Has always run great, but starting to burn oil so ready to do something nicer.

The Blazer is a factory AC truck with everything intact on the dash, so long term goal would be get a vintage air kit or other going in combination with the factory AC system. I have the factory brackets and some compressor stuff in a a bin from the previous owner.

The engine that I am going to be building up is actually from a 1972 Blazer that is getting a LS swapped, and I'd like to use the factory power steering pump, alternator bracket etc, for a very OEM engine bay look.

I'm open to aluminum heads and a cam, as more power, torque and efficiency would be welcome.

That said, I'll need some recommendations of what combination makes sense, here are my goals:

1. Relatively mild idle, probably like what back in the day was called an "RV Cam" in terms of idle. I'm going to post a video of what the truck currently idles like. I'd like the idle to be the same as the current engine.

2. My wife enjoys driving the truck as well, and it is currently used as the nice weather summer station wagon, taking the kids and bikes to the park, little league games, camping, hence the desire to keep things mild.

3. Occasionally the Blazer tows a light aluminum enclosed motorcycle trailer, that weighs 2000 - 3000 lbs loaded up.

4. Want to mount all the factory accessories to the front the engine in the factory locations.

5. Open to either Roller Cam or flat tappet cam, the local machine shops in my area would very much prefer a roller cam, and I am fine with that as long as we can pick one that is sounds like what my current setup sounds like at idle.

6. Would like to run AC with this engine.

7. Block is a 1972 350 Truck Engine (factory Blazer engine)

Knowing all this is there an aluminum head / cam combo that you could recommend that would fit the bill?

Here is the idle that the truck has currently, I'd like to match character of this idle, but just gain some power and efficiency.

https://www.youtube.com/watch?v=kv_7xXpZwl0

Thanks! -Ian