4.10 trans gear reducer

[SS427]

It has been discussed here but I cannot seem to find it. Can someone tell me what gear reducer should be used on the 70 Z28, 4.10, M22, F60x15? I know it is the 666F unit but I do not know the ratio that is stamped on the unit. I do need one if anyone has the correct unit. Also need one for a 70 LS6, 4.10, F70x14. Thanks,
Rick

[YENKO DEUCE REGISTRY]

I think it is 1 : 0.833

[SS427]

Thanks M.

[YENKO DEUCE REGISTRY]

Part number: 1565208, goes with 'key'; part number: 867209

I have never been able to get this small assy to work properly, it spins way to fast or not at all..... [img]<<GRAEMLIN_URL>>/mad.gif[/img]

[mockingbird812]

Rick, FWIW, the '70 Deuces with E70-14 tires and 4.10 gears use the 1 : .833



This one resides on the side of the Roof Deuce M21 tranny.

[scuncio]

I have a nice 6477965 version available (same as Sam's) in case anyone is looking.

[YENKO DEUCE REGISTRY]

you have a pm

[SS427]

Thanks for the picture Sam. I think that it may be different on the 70 Z's due to tire size. Also, from the photos I have been looking at it is the same unit the Chevelle uses though the one you posted would certainly fit a lot better! This is a shot of low mileage Z28 with 4.10 so I assumed that is the style these came with???

[SS427]

With a little help from Chris White and some GM books it appears that I need two of the .8241 units. Thanks to all for the help.

[YENKO DEUCE REGISTRY]

I've only seen the round type on the Deuces/Z28's, never the square type.