Got ripped off. Looking for a new idea for the inside of the engine. Stroker maybe?

jbc426 said

Just my experience, but I had a Doug Dutra built Slanty with big valve heads etc. Ran it for years. It was impressive for a slant. One day I was just tired of it, sold the motor and trans and swapped in a tired junkyard 5.9 Magnum with EFI and a 727. I drove that for a year or so, then built a 408 stroker for it and hooked it up to a 4 speed overdrive automatic with lock-up converter.

Both the 5.9 and the 408 get better mileage than the slat did, have WAY more performance and pretty much bolted right in. I'd never go back to a slant no matter what kind of unlimited budget build the slant 6 was.

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That's because you tried having a naturally-aspirated slant six AND high performance. The strangulated cylinder head defeats all attempts to make a "breather" out of a slant. The only way to get impressive performance out of a slant six is with nitrous oxide, a supercharger, or a turbo. They NEED help in the air-flow department. The turbo motors I have seen that work well are in early A-Bodies that have (unladen) vehicle weights around 2,800 pounds. Tht puts them through the quarter-mille in generally, less than 11 seconds, like this one: [ame="https://www.youtube.com/watch?v=7QzUfV8iTpQ"]Turbo Slant Six 10.74 @ 127 mph 7-19-10 - YouTube[/ame]

Those turbo slants make over 500 horsepower and idle like a stock motor.

But, trying to move nearly 3,000-pounds with a naturally-aspirated slant six is probably not gonna work well. The turbo route is neither cheap, nor easy, but it's a viable alternative to swapping in a V-8 into A-Bodies for increased performance.

There's a picture of my '64 Valiant with a turbo slant... :wack: