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355 build

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Old 10-26-2010, 12:42 PM
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355 build

hey guys im in the middle of building a 355 to go into my firebird and i feel like my desktop dyno is being very generous in the hp and tq ratings and i wanted to see what you guys thought. According to the dyno my motor will be making

564hp @ 7k
483tq @ 5500

now as far as whats going into the motor:
Dart Iron Eagle Platinum Heads 200cc runners 64cc chamber (got the flow numbers from dart)
Lunati 60113 cam (suggested by lunati)
Flattop piston -5cc
Dart single Plane high flow intake
holly 750 carb

what do you guys think?
Old 10-26-2010, 03:01 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Lunati says 6400 RPMs, not 7000.

DD is usually a little generous.
Old 10-26-2010, 04:21 PM
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Re: 355 build

yes that was the other thing i found odd it sayd peak power at 7k when like you said its power band is good to 6400
Old 10-27-2010, 05:25 PM
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Re: 355 build

my other question is whats the highest compression ratio id be able to squeeze out of this motor before going to race fuel? is 11:1 to high?
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