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348Q Mustang · 11-04-2007, 11:34 PM

They have always been my choice. As stated have the crank blueprinted, as I've found their tolerances are too wide. Learned the hard way (2 broken motors in two years) that the ARP 8740 bolts don't hold up. Both motors were rod bolt failures. Upgrade to the L-19 7/16 and you'll be fine. Ran my 521 Ford and 514 Ford 6600 shifts and 6800 traps. The last motor has aprox 150 passes and the new owner is still running it with fresh bearings. I don't think I would run the cranks "out of the box" as I've always had my machinst check all the specs. and true them up and all have needed attention.
On a side note , be sure to run a good quality damper my choice is an ATI.

11-04-2007, 11:34 PM	#5
348Q Mustang Junior Member Join Date: Mar 2007 Location: Otsego, Michigan Posts: 11 Likes: 0 Liked 0 Times in 0 Posts	Re: eagle rotating assemblies They have always been my choice. As stated have the crank blueprinted, as I've found their tolerances are too wide. Learned the hard way (2 broken motors in two years) that the ARP 8740 bolts don't hold up. Both motors were rod bolt failures. Upgrade to the L-19 7/16 and you'll be fine. Ran my 521 Ford and 514 Ford 6600 shifts and 6800 traps. The last motor has aprox 150 passes and the new owner is still running it with fresh bearings. I don't think I would run the cranks "out of the box" as I've always had my machinst check all the specs. and true them up and all have needed attention. On a side note , be sure to run a good quality damper my choice is an ATI.