timing is all part of what the vehicle wants. theres just not one set number
timing is all part of what the vehicle wants. theres just not one set number
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
Yup - what he said. Timing is one of those parameters where more is not always better, even if you don't have detonation. Timing should be set so maximum cylinder pressure occurs 12-15º ATDC. Too little timing and the piston's on its way down before maximum cylinder pressure occurs - you lose power. Too much timing and maximum cylinder pressure occurs too soon, which incurs a pumping loss as the piston has to compress rapidly expanding gasses - you lose power.
Where timing needs to be set is a function of piston design, combustion chamber design, and the fuel used. The only way to really know what timing is needed for your truck is to put it on a dyno or take it to a drag strip and adjust based on trap speed.
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