I have a 5.2 ram with no oil press and a good 340 short block can i just bolt on the magnum heads intake etc. and have a 340 efi? Would I need a computer compatable cam? If its is possible is there anything I should know about?
The oiling to the heads in the Magnum series engines is completely different from the older LA series. LA's use a hole in the block on the head mounting surface to supply oil to the rocker shafts. Magnum engines oil through the pushrods. I remember reading in the Mopar mags beck when the MAgnum engines came out that you could swap Magnum heads on an LA block if you blocked the oil passages in the block and used AMC tappets and hollow pushrods. You might also look into any other items that might not work such as crack sensors and whatnot depending on the model of your Magnum engine.
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