Mick's 70 Lowlight

Got the valve train geometry sorted out today. Had to make up a custom adjustable pushrod for the Sig Erson ratio rockers as they have a cup style end instead of the normal ball end, this unfortunately meant sacrificing a pushrod. The Sig Erson pushrods were too short to use so I decided to cut one of those up, I had a set of aluminium cut to length pushrods for another engine build so used those instead.

Setting the pushrod and rocker geometry is a job that requires a little patience to get the best results, and after making up a number of different thickness shims I found the perfect setup. Overall lift is 9.9mm which is 0.389" a definite improvement over stock but not as good as I had hoped given that I'm using a 1.4:1 ratio rocker. Ahh well. Will just have to see how it performs. Really need to get that dyno built so that I can start to verify some of these mods.