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are 40's or 45's better for somewhat stock engine?(nt)

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Guest Anonymous

Probably 40's are better, but either can be set up to work on a stock motor. Supposedly you won't see any performance gain with 45s (relative to 40s) until you get well over 7000rpm. That's just what I've read, but it seems credible.

Of course, some well-known tuners claim that you can get 180hp out of a 40/40 downdraft setup, so there's no clear benefit to sidedrafts until you get to really extreme motors.

If you have a choice between 40s and 45s at the same price, the 40s might be a bit easier to tune for street use. I have 45s on my otherwise stock motor because the price was right when I came across them. I love them, and I won't go back to downdraft.

Mike

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Guest Anonymous

on a stock motor? There's got to be a point where more air doesn't matter, I just don't know what that point is.

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Guest Anonymous

(nt)

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Guest Anonymous

cheaper at the pump, less tweaking and cheaper to convert from either a stock solex or weber.

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Guest Anonymous

down drafts may work fine, but dual sidedrafts are just f'in cool.

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Guest Anonymous

Just kidding.

I would use 40s on a stock motor. Just make sure the idles are set right and maybe "adjust" the progression holes.

My experience w/ 45s was that they were only really happy when accellerating.

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Guest Anonymous

you can tune both of them to run 34mm chokes and you'll be fine. It's great even on stock motor.

steve

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Guest Anonymous

maneater.gif

Two might be a bit much, I'd think. I'm going with the single Lynx 45, as I don't have any other sufficiently funny 45's to stick on my engine.

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