Official 3rd Gen Hemi thread

On the other hand, the 2009, 2010 5.7 is quite different. And has great potential with more compression (10.25:1 vs 9.6:1) and revised heads that flow nearly as much 6.1's, or so I have been told. About the only components that are the same are the crank and rods. If running aftermarket intake and headers, 6.1 style must be used.

58 tooth reluctor wheel vs 08 down 31+1 arangement, And the introduction of Variable Cam Timing are the main problems when using this engine in a swap to an older body.

Through persistant poking, prodding and the generous advice of a some (like 392Stu), I have found few options to control this engine. At current time.....

One option reccamended by 392Stu, that is doable now, is to swap to the older style reluctor wheel and weld the cam phaser to the cam sprocket. The MSD HEMI 6 will work if one was to go this route. This may also require new rod bolts as well since they are torque to yeild.

FAST XIM ignition will drive the coils and read the new reluctor wheel (there is a 'dip switch' for this app) Not currently able to handle VCT function. Though more expensive than an MSD set up, one would not have to disassemble the bottom end and replace rod bolts. (Thanks to Rich @ FastManEFI for looking into this)

Electromotive's XDI box will run the ignition and VCT, but, it's high dollar stuff and will need extensive tuning....and maybe a second XDI box! (per Electromotive)

MSD is talking with Mopar Performance to see what they can do........ http://www.msdignition.com/forum/showthread.php?p=63711

Regardless, the MDS lifters and yokes must be replaced with non-MDS units and the 4 solonoids replaced with plugs. As with all MDS 5.7's in retro app.

All in all the 5.7 "Eagle" Hemi has more performance potential than the 08 and older 5.7's but, still has some technical issues to be sorted out. I expect that in time some aftermarket company will work out these issues.