- Mar 2, 2015
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Take a micrometer and measure the valves. If they are 1.60 and 2.02 ported then I'd leave them on a turbo engine. Less likely to blow head gaskets... will have to watch cylinder temps. Iron doesn't dissipate heat as fast. The engine I had ran pretty good with them...I believe they would be, " what they call ", chevy valves. Lol
That was the first engine I ran 1.6 rockers on the intake and 1.7s on the exhaust. Ford always restricted the head exhaust flow. That was old school tricks. Gave more lift to the cam. The article is online with the comparisons. Not a whole lot of gain... maybe more with nitrous or boost.
That was the first engine I ran 1.6 rockers on the intake and 1.7s on the exhaust. Ford always restricted the head exhaust flow. That was old school tricks. Gave more lift to the cam. The article is online with the comparisons. Not a whole lot of gain... maybe more with nitrous or boost.