Supercharged Diesel Camshaft | BANKS BUILT 16

There are plenty of camshafts for turbocharged diesel, but no one has made a supercharged diesel camshaft until now.

At 4,200 RPM, the stock Duramax L5P intake valve is only open for nine-thousandths of a second. (That’s .009 of a second!) We want to run our supercharged diesel engine over 6,000 RPM so the valve-open time will be further decreased. Gale explains how our new .400″ and .500″ experimental camshafts will open the valves higher and longer, allowing for more airflow, without contacting the piston. Sharpen your pencil, school is in session.

00:00 Intro
01:04 LML-L5P Duramax cam comparison
02:10 Tappet comparison
04:26 Valves, bridges, rockers, springs
05:46 Cam measuring
11:30 Cam analysis and comparison
26:36 Next episode teaser

We use a Cam Pro Plus from Audie Technology to measure the camshaft. This instrument measures valve lift, valve motion, base circle runout, and more. Gale exclaims, “It’s like rocket science!” After taking measurements we take a look at the data.

The Cam Pro Plus from Audie Technology to measure the camshaft.

He compares a stock camshaft to the new one.

Next time on Banks Built, watch the assembly of a custom-built Allison transmission destined for our supercharged Duramax diesel-powered ’66 Chevy pickup. ATS Diesel’s Clint Cannon walks us through each step of the process.