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[04fxdwgi25]

If you can get your hands on the magnum, they are supposed to have forged crankshaft and forged pistons. 7.4 has cast

 

[Scott Danforth]

If you can get your hands on the magnum, they are supposed to have forged crankshaft and forged pistons. 7.4 has cast

Not always

Make sure to verify the crank part number

The magnum was assembled in house from parts out of the GMPP parts bin using an assembled short block and rectangular port heads. The other came in a crate from GMs Tonowanda engine plant as a long block with oval ports

 

[stresspoint]

well i don't know about anyone else but this thread has taught me some things i was unaware of.
thanks guys!.