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After a lot more reading, a l/s or locker in either an 8.25 or 9.25 aluminum case IFS is a really bad idea. Even worse than I thought. A 9.25 IFS conversion is pretty involved and very expensive, for only a marginal strength increase. The 9.25 aluminum case still has problems cracking with a l/s or locker.
So, I'll leave the front completely alone for now and just do a TrueTrac in the rear sometime this summer hopefully.
Then the next year I'll consider a SAS swap with another TrueTrac, but ONLY if I can resist the temptation to lift it as well. If I lift the AV and make it into an offroader, then I have no reason to resurrect my Blazer. That would break my heart. I just want the AV at the same point my Blazer was before it died, street-driven with no lift and F/R TrueTracs. It's a great package, but I'll eventually be running a LOT more power in the AV. The SAS swap would probably push back the turbo kit by another year as well, because the SAS would occupy the time and money I was planning for the 4L80E swap.
Well, crap LOL. I'd better start reading up on SAS swaps, and find out what options there are. I'd want to keep Auto-Trac and ABS if it's possible, so I'll have to be careful with selection.
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With the type of driving that you have described, your front diff will handle those situations with ease. Just do the upgrades that you have decided on and call it a day. Those Avi's ride to nice, and are to civilized to do an axle swap for those conditions. As a former Avi driver and K5 owner with 38's, bring the Blazer back to life and enjoy that for off-roading. Hell either way you go, both would be great. I have always been a fan of Lock-Right lockers. Had them in both the front and rear of the K5. No problems and I was pushing it with 38.5's on 10 bolts and I did everything in that truck. haha. Just remember if you do decide to go with a lift and tires check the locker manufacture because only a couple warranty the locker above 33 inch tires. Good Luck
Jay
