Roush 427 & 402 Differences

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03-01-2009, 09:18 PM

LudicrousSpeed LudicrousSpeed is offline

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Location: Oceanside, Ca

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Roush 427 & 402 Differences

Hi,

Dont shoot the Noob, but I did a search and couldnt really find answers. I'm looking at several cars with Roush 427's & 402's. What are the differences between the 427R vs. the 427SR or SR w/TW (Twist Wedge Cam?). Same with the 402 series. I've looked at the numbers on the Roush site, But am more curious about the "Intangibles".

What the hell is a twist-wedge cam? When I think of a cam lobe, I think of a lobe profile that resembles the profile of an airfoil.

The 402 & 427R seem to put out the best Nums, but I'm more interested in "Streetability" & would rather have a torky engine than a high HP box.

Also just curious, but have heard "things" about the Roush Webber style FI systems- opinions?

Thanks All

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