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PY Online Forums - Bringing the Pontiac Hobby Together > Classic TECH- specs, codes, resto issues FORUMS > 67-69 Firebird TECH > 69 400 YT upgrade...need some thoughts on hp/torque #'s when done...
 
 
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Old 01-29-2022, 02:25 PM
ScumOne ScumOne is offline
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Join Date: Aug 2015
Location: Prescott, AZ
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@vertigto: Do you know what # stock heads you had for this dyno pull? Our timing is the same as well.

Thanks for posting!

Jim

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