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If he is using the factory lifters as I am on my Magnum 408, they need the extra preload as Hughes recommends. I did the typical Chebby 1/2-3/4 and they were really noisy. Then went to 1 1/2 and they were a little better. Even after adjusting 2-2 1/4 the engine still has a good bit of noise from the top end. (Not so much a lifter tick) but there is noise. I'm also running Hughes cam and hughes roller rockers.



Maybe lifter ticking is not what I am hearing. Maybe it is just noise. The rockers are the 350 GM rockers. The rods Hughes sent me are longer than the factory ones.


‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring
‘14 Big Horn, Quad Cab, 4x4, 1500