I get the whole "racing/lightweight" thing, but that seems exorbitant considering the finish issues. On the flip side, finding a set without hammered flanges is tricky due to their fragility.
While I have no problem using Moroso parts when needed, their undying need to splash their name all over every single item they sell is off-putting to me. Just because I want your parts doesn't mean I feel a need to clutter my engine bay with advertising.
Also figured out why the engine tended to overheat while I was putting the parts away
The one on the left is from the Duster the other one came on the road runner. Both two groove.
Maybe yes, maybe no. It's definitely an underdrive compared to the other. But it was enough to cool
something or they wouldn't have made it (although it may have been paired with a smaller pump pulley as well). Also, fleet/cop cars used different water pumps with less vanes which move coolant
less quickly, along with 5-blade fans as opposed to 7-blade (a situation one also finds on trucks). If I had to guess, the small pulley is from a manual-steering application, possibly an LA or even Slant. A lot of pulleys interchange based solely on offset, which of course doesn't mean they're the right diameter.
Of course, I've written an entire thread about how parts-store thermostats don't flow enough coolant for the cooling system to work properly. That's my go-to if an engine runs warmer than expected, and the whole thing arose out of a situation with Kev's car running warmer than he'd like. It won't run right at stat temp now, but he lives in Atlanta so it's not surprising it sees low/mid-190s in the summer with a 180° stat.
The best bet is to get a set of pulleys off the same engine if possible. I've grabbed sets out of boneyards over the years and either zip-tied them together, or at least used the tiny colored zip ties to color-code them. The pulleys on the Valiant both had yellow zip ties, so I knew they were a "matched" pair, in this case from a manual-steering small block.