Dyno Session: 466 Big Block Ford

We projected this package to produce 625Hp, here are the results from our session.

The set up:

Engine - Ford big block

Cubic inch - 466

Compression ratio - 12.7:1

Camshaft - Erson solid roller

Carbs - Holley 750 cfm double pumper (x2)

Jets - Front 71, rear 80, no power valve

Ignition timing - 35 degrees

Fuel - AFD TrakTech 111 (106 octane)

Oil - Castrol 10w40

As usual we fired up the engine and looked for good oil pressure, for leaks and odd sounds. We did find a water leak coming from a bolt hole in the front timing cover that had some corrosion, so we took off the water pump and put a dab of silicone on the bolt and in the hole and it stopped the leak for the dyno session and a new front cover on the way (the silicone is only a temporary solution, a new cover is the proper fix). After the warm up again we did our check list and carried on with checking the filter and oil change.

We made our changes, pull after pull trying to pinch every horsepower we could get out of this big block.

When we are on the dyno we can really fine tune the engine to create the best and most efficient set up possible. The jet changes we made were only 2 sizes at a time, and making only one change at a time we can see exactly what and where the change made a difference.

The final numbers: 655Hp @ 6800rpm/ 611Ft/Lbs @ 4800rpm

Thanks to Dave for this nice big block Ford, a good torque package.

Another great session and day at www.dynoplus.com. Thanks Pierre

Project 466 Big Block Ford

This package was assemble to produce 625HP. We utilized the stock 460 block and crank. We installed Eagle H-beam connecting rods, and Arias 11cc forged dome pistons, bringing the compression ratio to 12.8:1 with the Ford Motor sports "Super Corbra Jet" cylinder heads. The valve train is equipped with a solid roller Erson camshaft, roller lifters and roller rocker arms. Using the roller valve train is a sure way to free up horsepower robbing friction.

We will be seeing the results from this package on the dyno soon!

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.