Re: Help!!! What Year???
Well I own a 1990 gmc fullsize jimmy. In the 89,90,91 year they have the 30 spline 10 bolt axles (someone correct me if the years are wrong) which are a little stronger than previous years . It will have a np241 tcase which is nice and low geared in 4 lo. Most of the jimmies & blazers came with a 700r4 which is alright as long as you put a big honking cooler on it. I swapped mine out for the sm465, no overdrive but strong as hell. They came with them stock but are not as common as the autos (from what I've seen) The 90 clip in my opinion has a better headlight setup and the upgraded turn signal sockets (old ones were notorious for shorting out. The TBI engine have really strong torque numbers, runs smooth and efficient and I have found are way easier to work on than the old quadrajets. They come with an oil cooler and most of the TBI engines I have seen treated properly, run for about 300,000 + KMS. Starts in -28 no problem. Trucks in these years may have the RWAL system which is a rear anti-lock system, which hasn't caused me any grief, yet. The paint should be base coat/clear coat, and not the acrylic laquer sh#$ like the older ones. Inside its all pretty much the same, except the daytime running light option and the really big honking delco tapedeck and 4 speaker system. Try to avoid the power tailgate window. Its handy when it works but mine causes me so much grief I'm trying to track down a manual regulator for it. thats all I can think of right now, hope this helps