Quote:

---

TRW actually says the reliefs are 7cc.

Hmmmm...I wonder if I could get away with cutting the heads and still have enough clearance. Guess I could always cut them and bolt them up without gasket to see what the p-to-v clearance is and then figure out what to do then.

Would cutting the heads .040 mean my ptv clearances would become .080" intake (.120"-.040") and .134" exhaust (.174"-.040")?

---

It is way better to measure them to make sure, Remember that the valves are on angle in relation to the piston tops so the angle will affect the actual clearnances, that being said I run my piston to valve clearances .060 on the intakes, or less sometimes and .080 on the exhaust on a motor with steel rods and a automatic trans and race converter and good valve springs. I do run a little more clearances(.100 and .120) on a stick shift motor with steel rods, just in case they miss a shift