Oh crap..... Internally balanced engine with an external balance flex plate?!

johnnymac2k6 said

My 610 horse 408, that runs 10.60's. With a solid roller 760 lift cam, idles at 950 rpm, and purrs like a kitten without rattling the car apart....just because its not an efi engine doesnt mean it rattles the car apart. I also have poly spool mounts.

For comparison sake, I had a less than optimally built 323 that idled at 1100, and shook more than the 408.

The "big engine" shakes analogy is a mask for other factors.

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Thank you. I still think my saying the car shaking is being taken out of context. I could say the car isn't shaking and you guys would be on my side. Maybe I over exaggerated the shaking. My car still idles at 1400 which E85 needs and my big cam with gas was at 1100 before e85. The car doesn't shake crazy or anything. I was just saying I feel the car, the exhaust kisses the floor boards too. If you put your hand on the hood of a high powered car, I'm pretty sure you would feel it .