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Comparing Power Delivery: Old vs. New Cam Designs

2:38
24:00
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At 2:38 in

Lake Speed's Ford C3 NASCAR Engine: NEW Comp Cam! 20+ Year Old Camshaft Specs vs Current Technology

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What happens here

The speaker explains the advantages of the newer low-shock camshaft design by comparing it to drag racing cars. Older cam designs, similar to Stock Eliminator cars with heavy flywheels, deliver power slowly but steadily as they build momentum. In contrast, the newer low-shock cams, like Pro Mod cars with immense horsepower, deliver power very quickly and directly, like an arrow. This is achieved by carefully managing valve motion around top dead center (TDC) to maximize airflow during the most critical period for cylinder filling.

Goal: Understand how cam lobe design translates into different engine power delivery characteristics.

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it up a whole lot more so we've paid a lot of attention here but all of this area if you look from 30 degrees after all the way to 30 degrees after bomb dead center a lot of times I'll actually look at like 40 degrees after to 40 degrees after bottom in that region that's where we have really good airflow and you can see through most of this region that we have a ton more area under the curve with the new camshaft and the oil cam shaft you know for that day with that valve spring we couldn't have run 800 lift if we wanted to you know there wasn't an 800 this spring you know so we were just a little bit over 700 left we couldn't have run the acceleration rates at the valve back in 2000 that we can run today the reason we couldn't is the push rods you know that motor would have 3 8 or 5 16 push rods in there Yates 3 8 push rods in it had an aluminum rocker arm on it it was pretty flimsy today you're gonna have much stiffer rocker arm you'll have 7 16 push rods it's going to be a lot stiffer system so we can run more acceleration in there so the new design with the new rocker arm lets us get a lot faster in this region you know Peak piston

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