Subscribe to a magazine

P49652 Image Large

Back to article View Gallery
4 of 9
With half the engine under the windshield, as current trend dictates, the Allen installation requires either a few helping hands, or the use of an impromptu lifting device, as pictured. Considering the 38 percent increase in horsepower that resulted (at 250 rpm lower than the stock power peak), a little sweat during installation seems well worth the effort. In that sense, tehre is a substitute for cubic inches.

Advertisement