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Old 12-07-2015, 06:06 PM   #7
init4fun
 
Drives: 2017 50th Anniversary
Join Date: Dec 2015
Location: illinois
Posts: 424
I think the numbers are spot on. Another shop just posted a similar dyno sheet showing 414 Hp and 428 tq

Seems way under rated to me. That or GM has the most efficient drive lines out there. Seems more likely they would sand bag the test engines then over deliver.
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