340 head torque requirements

66fs said

You might want to contact Hughes Engines about torque for the head bolts and rocker arm fasteners. We were giving values for stock fasteners. Stock rocker shaft bolts are only grade 5 standard bolts. I only asked about the torque plate as fastener (head bolt) torque has an effect. No worries there. Sounds like your build is similar to the 340 build I'm working on. Do you have an adjustable pushrod to check length?

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Yes I do. When I was checking piston to valve clearance compared my adj. pushrod against pushrods provided by Rocker Arms Unlimited. Why they provided them do not know but very close to my needs. Do not know the actual effective length at this time. That determination is pending getting the heads on. It's just like many of these suppliers to stipulate consult your service manual for torque specs. The exception so far for me is ARP. Even if the bolts from Hughes are grade 8 vs. stock 5, required torque would be the same would it not.