Just wounding if they will fit from my understanding it depends on the cylinder heads. iv heard it will work and iv heard it wont. i know some racers have used these sized valves on 0.60 over bored 305 blocks. so whats the deal? would these size valves in any head work with a stock sized bore ?

 

I'm only guessing but...the reason is "shrouding the valves" on stock style motors. The larger valve in the smaller bore will push the in coming flow into the cylinder wall. so the larger valve will cost power in that case. now on a race motor you could run a much higher lift to get the valve out of the way, so the valve head will be less likely to direct the in coming charge into the cylinder wall.

Somebody else will need to help with the information in regards to if the 2.02 will fit or not.

hope that helps.