7400 vs 6400 Chainrings
 

I'm restoring a bike with almost complete 7402 Dura Ace components. Except the chainrings are a rather ugly set of salsa 53/39 rings. I'm looking to get the correct chainrings, or at least ones that look correct.

Is there any difference between Dura Ace 74XX rings and 600 64XX rings? I wouldn't mind saving a little money.

As a follow up, how about between 74XX/64XX and 77XX/67XX rings?

I think the 7700 rings were lighter, and uglier, than the corresponding 65xx rings.
67xx rings are 10-sp.

I always thought 6400 rings were just not as polished as the 7400 rings, other than that, no difference..

Judging by Part number, you're dealing with 8 speed and early 9 speed chain rings. Not too much difference other than finish and slightly lighter weight. I would stick with 'like' part #'s... don't mix a 74xx D/A chain ring with a 77xx; they won't mix very well. Same with 64XX vs. 65/66xx... you get the picture.

:thumb:

The x400 chainrings won't be ramped and pinned and could very well be biopace. That being said, I've put newer ramped and pinned large rings (all you need on a double, no need for ramps nor pins on the smaller ring) on older cranksets in the past with amazingly positive results in front shifting.

I'm currently running a 6600 large ring and a superbe pro 38t ring on my 9 speed (6510) race bike. Shifts great.

I was thinking there might have been an issue chain wise between 64xx and 65/66xx; you know, a 9 speed chain with
an 8s/9s chain ring mix. Sounds like there isn't an issue after all... cool! :D