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Mine made 713 on stock motor, it broke a couple ring lands. I still have stock converter, trans and rear. Now with the new forged motor I'm at about 800 rwhp. I have replaced the driveshaft but the other drive train components are stock. I'd say 650 is safe, but so many factors need to be covered to get there safely.
We have 2300 Magnuson Heartbeat that gets you to 550 with ease on all stock parts. Do your home work and figure out what you want to do with the car first, street, drag race, autocross or whatever. Don't waste money and don't believe everything you read or hear.
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2022 Lt1 6.2 A10, Maggie 2300, THPSI Port Inj/10 rib, Rotofab, E, Nickey, SCOL, Griptech, RC Bandits, Hoosiers/MT 9.80@142.96 1.44 60ft, 6.34@112 707/669 RWHP/TRQ. 16SS Maggie 2650 9.41@147 1.35 60ft, 5.99@119. 16 C7 A8 10.90@128 Bolt on stuff
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