|
Actually by shaving the head he most likely (from illustrations I found for saturns) retarded his cam timing (works that way on most engines I've seen). If he had the cam sprocket modified maybe it was to compensate for this? Some engines respond better to these changes than others too.
I drilled my cam sprocket for my metro +10, but it's a little different than most engines, next step for me is an XFI cam. Ideally these modifications would be complemented by smaller intake and exhaust tracts to maximize torque in the operating range we use instead of the 6,500 RPMs most modern engines can rev to nowadays...
I often wonder what kind of FE you could get with a gas engine designed for a peak RPM of 3,000-3,500?
|