Tsp cam
Stock heads will work great with a .550 lift cam. You wont likely flow much more to .600 and your spending more energy pushing the valve down and not gaining any power which can actually reduce power and worst case make air turbulent. Chop is a product of valve overlap . More overlap more chop. Most people like to compare overlap at .050 lift to determine potential driveability, character and chop. To figure this out you take the .050 numbers ((intake+exhaust) / (2)) - (2(LSA)). Your tuner can also play with the sound a bit. As do some other things like valve size. Anyways, most performance cams will have a nice chop to them and too much chop is too much overlap and it will sound nasty but run like a dog. In short, everyone will make fun of you and its lame. I'd find a cam that offers the best gains in the RPM range of your overall combo and it will sound how it sounds. Wont sound stock for sure. A larger case magnaflow style muffler will help create that big block sound too.
TSP showed several tests with low lift vs high lift dyno overlays and the high lift (600) showed an increase in power at every point over low lift (550). They did it on stock 5.3 motors using their low and high lift truck cams in different durations, comparing all things equal except lift. In other words I agree with the theory but the testing showed otherwise.
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TSP showed several tests with low lift vs high lift dyno overlays and the high lift (600) showed an increase in power at every point over low lift (550). They did it on stock 5.3 motors using their low and high lift truck cams in different durations, comparing all things equal except lift. In other words I agree with the theory but the testing showed otherwise.
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you're still spending a larger portion of the camshaft duration at peak flow which improves power across the entire rev range.
Sizing the cam to not go above your peak flow numbers would be like setting your shift point at peak torque.
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You want more lift than your head will flow efficiently. Even if your head picks up nothing for flow between .550 and .600,
you're still spending a larger portion of the camshaft duration at peak flow which improves power across the entire rev range.
Sizing the cam to not go above your peak flow numbers would be like setting your shift point at peak torque.
you're still spending a larger portion of the camshaft duration at peak flow which improves power across the entire rev range.
Sizing the cam to not go above your peak flow numbers would be like setting your shift point at peak torque.
TECH Fanatic
Joined: Jan 2017
Posts: 1,758
Likes: 442
You want more lift than your head will flow efficiently. Even if your head picks up nothing for flow between .550 and .600,
you're still spending a larger portion of the camshaft duration at peak flow which improves power across the entire rev range.
Sizing the cam to not go above your peak flow numbers would be like setting your shift point at peak torque.
you're still spending a larger portion of the camshaft duration at peak flow which improves power across the entire rev range.
Sizing the cam to not go above your peak flow numbers would be like setting your shift point at peak torque.
Higher lift usually means you're quicker off the seat and have a more aggressive ramp so the low lift numbers are better, making a higher lift cam better everywhere and not just at leak lift.
