tc76 and 10bolt to S478 and 9", with results
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tc76 and 10bolt to S478 and 9", with results
First graph is of the TC76, second is the S478, and third is the S478 more boost and timing
Last edited by smooth01; 09-22-2013 at 05:39 PM.
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Every degree of timing was worth 30 HP until I reached 668hp, then I added another degree and it made 685hp, after that I added another degree and it made 686hp,so I took the degree back out. I tried adding more timing up top so it carry to 7000, but did really help at all, maybe I didn't add enough, or maybe something else is going on. Cam and springs should definitely make power to 6500
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Yeah, if you turn the boost up it'll hold power higher into the RPMs. Engine shouldn't have any issue with that either. I tuned a 317-headed 5.3 with flat top pistons up to 18psi on 91 octane before it started picking up knock. Compression was just a hair over 9:1. That motor was nasty.
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Yeah, if you turn the boost up it'll hold power higher into the RPMs. Engine shouldn't have any issue with that either. I tuned a 317-headed 5.3 with flat top pistons up to 18psi on 91 octane before it started picking up knock. Compression was just a hair over 9:1. That motor was nasty.