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Presently my L67 is internally stock apart from Yella Terra (Aussie brand) 1.8:1 roller rockers. Shortly the engine is coming out for some internal mods. I intended to run a cam such as the XP or similar but would like to retain the existing 1.8 RR if possible. I will be installing CompCams 130 springs and titanium retainers etc. Heads are currently stock but these will be custom ported when pulled down.
A note about the Yella Terra 1.8 rockers...they use a spacer plate to raise the rocker cover so obviously with their design, even on stock cam, it needs extra rocker cover clearance.
My main concern is if coil bind or any other clearance will be an issue with the XP and 1.8's? Or will the 1.8's simply be too radical? Or would a custom grind and the 1.8's be a better or safer option?
A note about the Yella Terra 1.8 rockers...they use a spacer plate to raise the rocker cover so obviously with their design, even on stock cam, it needs extra rocker cover clearance.
My main concern is if coil bind or any other clearance will be an issue with the XP and 1.8's? Or will the 1.8's simply be too radical? Or would a custom grind and the 1.8's be a better or safer option?