4 qustion

1) what rods can i use in a 305 stoker? ( 335 )

2) can i use 6" rods on a stock 305 engine or would the pistons hit the vales?

3) do olds 307 rods fit a chevy cranks and wrist pins?

4) how much more comp whould you see with .20 over, bore on a engine with with 9 to 1?

 

1.) Use either 5.7 or 6" rods. Just be sure to use the correct piston.

2.) See above.

3.) Not certain.

4.) If you mean .020" overbore, nothing worth noting.

 

what do you mean by correct piston?

 

I doubt that there's an off the shelf piston available for a 335 with 6" rods.
There are pistons for the 5.7" rod however.
There are also pistons available for the 6" rod 3.48" stroke (305) I'll bet they have a lot of dust on them though.