Hi I'm rebuilding my Tr7v8 3.5 as per Real Steels article in Fast car magazine many years ago, it already has Typhoon cam, rhoads lifters, adj pushrods, holley and offy manifold. Rebuilding with RS 9.75 pistons but now uprated cylinder heads too.
My question is as RS don't do cylinder heads anymore, i want a head thats modified as per their stg 2 items and came across Peter Burgesses Econotune heads - does anyone know how they flow compared to the old RS spec heads?
RS quoted improvements of 27% intake and 43% exhaust at. 497" lift
Cheers
Chris
RS stg 2 heads vs Econotune
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