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Ford's 20 year old 'Teksid' aluminum 4.6 block (96-99 Cobra) weighs about 90lbs, and is tried, tested and true to 1400HP. Their later ('01) domestic block was 5lbs lighter and still good for 1000 or 1200HP... i forget. They're already getting staggering numbers from the new 5.0 Coyote blocks. You can keep your 200lb block... whoever came up with that one is still livin' on 70's time...
Put one in your Mopar then. Get it to 50/50. You've got a few months till the shootout race. You can prove the superiority of all things aluminum {sarcasm}
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I am just grateful that they have aluminum Gen 3 blocks at all. I would love to lose 75-80 lbs. off the front end to balance out the car. I really feel that with our crap +40 year old chassis that you can't really utilize more than 500hp cornering at the track anyways.
75-100 lb is no big deal IMO. And the chassis is fine. If you're having trouble with the 'crap' chassis you should tune it. Dial it in. Change some spring rates. Change alignment. Change the way you drive. Spend some quality time on a Skidpad (if your oiling system is up to it).
-'02 Dodge Viper Ex-World Challenge racecar
-'73 Duster, 6.1 based 392 hilborn hemi, tko600, full floater rear 9", Hellwig custom bars, viper brakes, built for road course
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