Fast Engines Edmonton

408 Cleveland Dyno Session

Initial set up:

Engine - Ford Cleveland

Cubic inch - 408

Compression ratio - 11.0:1

Carb - Barry Grant 750 mighty demon

Jets - Front 75, rear 85

Fuel - Premium pump gas (Petro-Can)

Ignition timing - 33 degrees

Exhaust - 1 3/4" primary tube header, with 3" collector

Oil - Castrol10W30 non synthetic

Extra diagnostic set up:

-Pyrometers for each header tube

-Wide band O2 sensors in each header collector

Initial warm up:

We start out the session with starting the engine, checking the timing and for any possible leaks or odd sounds. All was good so we continue to run the engine up to running water temperature. Then let it cool down, we do this with minimal load. We then drain the oil and inspect it, as well as cut the oil filter open to inspect for any material and for initial engine start up inspection. All was good so we continue.

First pull:

We make our first pull from 3000rpm to 3500rpm to make sure under full load there is no detonation with the fuel and timing we have it set up at. At this short pull we made 340.7HP and 510.7 Ft/Lbs at 3500rpm.

We made several changes to the jetting and timing to get as much power as possible out of the package (the point of a dyno session).

The final pull and specs:

Engine - Ford Cleveland

Cubic inch - 408

Compression ratio - 11.0:1

Carb - Barry Grant 750 Mighty Demon

Jets - Front 77, rear 90

Fuel - Premium pump gas (Petro-Can)

Ignition timing - 35 degree

Exhaust - 1 3/4" primary tube header, with 3" collectors

Oil - Castrol 10W30 non synthetic

Horsepower - 539.9HP @ 5700rpm

Torque - 531.0Ft/Lbs @ 4600rpm

This hydraulic roller pump gas street engine had great torque throughout the rpm range starting out at 3500rpm with 517Ft/Lbs to 4600rpm where it peaked with 531Ft/Lbs, this also is when the horsepower really started with 467HP @ 4700rpm gaining up to the peak with 539.9HP.

The dyno session/day was exciting and successful.

Thanks to John and Justin for Project 408 Cleveland.

Also a big thanks to Pierre at http://www.dynoplus.com/ for the genuine care and advice throughout the day.