67 BB Camaro 3 groove cast crank pulley pic

[1967 4K]

Recently Anthony has had some two and three groove 67 BB cast iron crank pulleys for sale and I ask him if he’d like me to post this picture of my three groove pulley set up on my 67 car.
Some people don’t understand why some cars use a two groove and others a three groove. Hope this picture is helpful to someone.

[66cayne]

I've always understood it to be alt, water pump, power steering if using all 3 grooves on the balancer pulley are used...

[1967 4K]

From the block out,
1st groove- Alt n water pump
Center groove- water pump only
Third groove- power steering

[1967 4K]

A

[169indy]

For "Factory Belt Routing" See your:
AIM (1967/1968/1969)
UPC 6

[luzl78]

3 groove is for power steering

[plumL78]

don't forget there was also smog on LA cars

[luzl78]

Was the power steering groove lined up with the smog pulley?

[1967 4K]

I’ll guess it’s the center groove.

[luzl78]

So, la smog cars without power steering got 2 groove and with got three groove. I wonder if la smog cars without power steering still got 3 groove and it wasn’t used or got just the 2 groove? Does anyone with an original bb car with smog and no power steering confirm if they have 2 groove or 3 groove?