Recommended 8/34

grimreaper said
The 741, 742, & 489 all require different gear sets due to the pinions so swapping the gear set from one of your 741s is not an option if that is what you are considering. There is an ongoing argument as to whether either the 742 or 489 housings is stronger. The 741 housing is the weakest of the three but is still no slouch. They hold up to a lot of hammering and for a street car that will not be launched with slicks will probably hold up very well.

Start with this info. http://www.bigblockdart.com/techpages/875axle.shtml

Thanks, that was my intension. So if I go with either the 742 or the 489 case, can the sure grip work with the 741 case as you and my research has shown that the 741 is no slouch? I have considered using a DOT type tire or a set of slicks on different wheels and just switch wheels when I want to do some track time. I have an 8/14 in it now, but also have an A body 8/34 and the shorter B body rear as well, that I could swap in, and only change the perches, or swap in the A body, but then purchase aftermarket axles. I have thought of another option to. Installing the A body rear and using wheel adapters that came on the rear for the big bolt pattern wheels I have then when wanting to go to the track, just remove the b bolt wheels and adapters and install small bolt pattern wheels with whatever type of tires I decide on. slicks or DOT. I guess I have a few options to go with. I figured it up and to beef up an open 8/14 vs an 8/34 it doesn't seem to cost effective since I have the 2 housings and gear selections. Thanks, I'm glad you cleared that up on the gear swap.