Friday, May 16, 2008

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

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