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I'm running 16lbs and I'm sure it can handle 25lbs. 800rw is where they say. I know of 2 mmr800 at 900rw. Look at MMR's specs for the shortblock.
*Brand New Cast Iron 2004 Cobra Block, torque plate bored and honed
*New 4340 Forged 3.543 stroke Cobra Crankshaft w/micro polished journals at no extra charge
*New 4340 5.933 MMR 800HP H-beam Rods w/ARP rod bolts ( These rods are shotpeened, magnafluxed and weight matched to bring you the finest H-beam rod available for your 4.6)
*New Forged Manley pistons (High or low compression)
*Speed Pro file fit rings (precision file fit to your application, nitrous, blower, turbo or N/A)
* Clevite tri-metal Rod and ACL Performance Main bearings
*Complete Pro Assembly and Balancing for the smoothest, highest revving shortblock available, Pre-Lubricated with Royal Purple Assembly Lube and spin tested. Lastly 3 technicians sign off on your new engine prior to packaging and crating.
Shortblock Options:
Coated Pistons (ceramic dome/teflon skirt) $399.99
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