Yet another 273 build advice thread!

Why do want later LA rockers? The '65 adjustable rockers are to die for! I used them on my .58 lift 312 duration solid lifter camshaft.

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Mainly because I don't have any. If I was going to use adjustable rocker arms, I'd probably use rollers. A motor like I'm wanting to build should be low maintenance and not need adjustable rockers with hydraulic lifters.