Chevy 350 water pump bolt pattern

[midnitewarya]

Putting a new water pump on my block and I just noticed that my pulley won't fit on. It seems the old pulley has the bolt holes 2 1/4" apart and the new pump has the studs at 2 3/8" apart. Anybody know of a conversion pulley for this?

It's a 350 TBI from a 1991 K5. Six groove pulley. I think the pump I have is for an older style motor.

Thanks in advance!

 

[4X4HIGH]

You better make sure it's the right pump since a 1991 350 is a reverse rotation waterpump.