please help, started rebuilding me 136b motor and realised pushrods are different lenths, can any1 tell me 4 sure which is which??? many thanks

:)The hollow, lighter ones are for the inlet valves.

thanyou very much.

Have you changed the cam followers? If not then you're still in schtuck, because you should replace the pushrods with the same valve they used to work, which is why normal practice is to put them in a piece of card numbered 1 to 8.