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anyone have anything bad to say about this idea?



Nope! Sounds like a great idea! I am scrounging together the parts for this swap myself. I am lucky in that my engine is a roller cam LA block already, so I can directly swap in the Mag lifters and pushrods (for the through the PR oiling). I'm gonna use stock Mag heads outta the wreckin yard, and swap in the GM 3.1-3.3 beehive springs

DOn't forget that the factory V10 magnums use 1.7 rockers instead of the 1.6 that V8 rockers cheap upgrade



Not sure how good an idea that would be...the mag heads already are a step up with 1.6 rockers vs. 1.5 rockers on stock LA heads. Per a discussion with Patrick, the cam guru, the mag heads are limited on the amount of lift you can run, and 1.7 rockers seem like they would be a tad too much unless you were using a stock cam...right?