05-13-2008, 12:02 PM
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#13 (permalink)
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Senior Member
Car: 2007 Chrysler 300C SRT8 2007 Dodge Charger SRT8
Join Date: May 2006
Member Number: 5993
Location: NYC
Posts: 2,202
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You can physically bolt a 5.7 head on a 6.1 block but you will have coolant leaks like its nobodies business. The 6.1 heads and block have a additional coolant port that the 5.7s doesn't have. I will try to find a pic of 6.1 and 5.7 heads gaskets to prove this.
If you want to build a 426 and have a 5.7 motor you will need the complete motor PERIOD! However, they do have 392's built off 5.7 motors that you can just bolt stock 5.7 heads on. I won't recommend that since they don't flow enough air to take advantage of the extra hp and the valve springs won't be able to handle the lift of a 392 cam.
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Best - 12.3 @113 1.9 60ft
Mods - DC sports strut tower bar - hid color matched fog bulbs - Billet Oil Catch-Can - Diablo Predator - Airhammer - Corsa cat-back - Stealth bulbs - Inertia heads (big valve job), Inertia SRTMAX Hell cam, Inertia ported Intake manifold, Inertia CMR tune, Kooks longtubes (PM-FL coated), Vredestein Ultrac Sessanta 275/40/20,1000hp shafts
Soon - torque converter, 426 short block.
Last edited by NYC_SRT8 : 05-13-2008 at 12:07 PM.
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