Quote:
Originally Posted by ULTRAZLS1
Are they making 500 with full factory exhaust and accessories load ? I’ve seen similar figures with an ls3 on an engine dyno. Same with the ls1. 418 hp open header no accessories
IMO an open header and no accessory test is more like the gross hp ratings if the 60s. Your procedure does not match the SAE protocol that found 455-460 hp. Or maybe I’m off here would like to know more...
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Yes factory exhaust manifolds and without the oem accessories. We pulled off the LT1 before we modded it and put it on our engine dyno saw 498hp crank camaro exhaust manifolds vs the C7 making in the 500s.