Quote:
34PackardRoadsta wrote:
The consensus appears to be that multiple carbs have been adapted to the six, but the benefit is looks, not performance.
Are there additional modifications to the engine that would increase the performance benefit of multiple carbs?
Thanks,
Tom
Engines of that era were very detuned. The designer knew how to get more horsepower but had to balance the conflicting demands of smoothness,silence, long life, low manufacturing costs, ease of service and repair, broad power band and of course, the quality of fuel and oil available.
It is possible to increase horsepower up to 25% or so without shortening engine life or making major modifications.
No one mod works by itself, they all work together. A basic formula might include a larger carburetor or dual carburetors, reground cam, high compression head or milled head, dual exhaust or header, lightened flywheel and recurved distributor.
All this is best done as part of a rebuild, or on a recently rebuilt engine.
There are other things that are helpful, such as having the reciprocating parts balanced and doing a 3 angle valve job and possibly port matching and pocket porting. It all depends how far you want to go. On an engine that old it does not pay to go too far. A mild hop up adds interest and a little extra "oomph". Go any farther and you would be better off with a newer OHV engine, or possibly a newer car.
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