Originally Posted by BlueStorm
yo, guys, the sport cams from Schrick's for the m112-113 only give you 1mm=0.039" of lift last time I heard, hardly worth the effort and the money. I don't think they even changed duration from stock set up.
I think your better off making high ratio rocker arms instead..you can relocate the pin for the rollerto get a lot more lift from a redesigned arm. machine shop could easily do these by the hundreds . take a look at the basic design it's quite simple to do. relocating the pin could be done by filler welds then redrill a new location for increase ratio
YouTube - M112-Engine Timing-Valve Train.
basic theory
Higher Ratio Rocker Arms
performance gains on a GM3800 engine
High Ratio Rocker Arms: 3800 Performance
That would be an awesome idea if we had an OHV set up.