Magnum Heads

73dartsport360 said

I Was Wondering If You Can Use Cheby Rockers On The Magnum Heads?
Has Anyone Ran These Heads On A 360 Combo/408 Etc. I'm Trying To Find Out What Head To Use On My Next Motor Its A 360 Stock Rods And Crank Kb 107 Flat Top Pistons With The Deck Zeroed. I Had 587's Stock On It But I Know There Is More Power To Be Made!
Thanks Brandon

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Crane sells a kit that includes studs that are 3/8" on the rocker side and 5/16 on the block side. The kit also has guide plates with teflon inserts for the push rods. Crane list the same sb chevy roller rocker for the mopar application.

I purchased this kit and picked up a set of Proform sb Chevy for my magnum headed 360. The Crane kits states that you should be able to use the same push rods as you do with stock stamped rockers. When I mocked it up the conversion push rods MP sells for magnum heads on LA blocks are way to short to the point that the bottom of the rocker contacts the guide plate. Some one mentioned that they used 7.8" sb chevy push rods and I picked up a set of those cheap at a swap meet. It appeared like they were to long since the roller on the rocker was not centered over the valve stem.

I borrowed a adjustable checking push rod and there is no length that will center the roller on the valve and the 7.8" did infact produce the shortest sweep across the stem. Depending on what you read this condition is actually more desirable than the roller being centered with a large sweep.

I put the roller rockers on but the valve train noise was not natural. I couldn't find anything wrong; there was nothing hitting, springs weren't binding and retainers weren't contacting the guides.

I wound up going back to the stock stamped rockers.