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If you don't plan to regear don't go any bigger than 35s. You will feel a little power loss but nothing too bad. A tuner will take care of that problem. And then you can adjust your tire size with your tuner so shift points and speedometer are correct.
Good info and I read your write up. Makes me feel a lot more comfortable I can do it myself. Also have a second car so, like you, I am not pressed for time.. just want it done before it starts getting cold or rainy. I like the height on the 4" you had on yours. Making me second guess the 6", but the price difference between the 4 and 6 is $100 so I am still leaning towards the 6.
On a slightly different topic.... they recommend 35x12.5-17 but I wanted to stick with the 18" wheels or maybe 20" (since I dont off-road. my understanding is that on 20s you don't have as much sidewall if you stay at 35 or 37 diameter and therefore don't have much room to let air out when crawling.). Also considering 37" tires as some people say they had lifted 6 and was able to put 37 on it. Well, my question is.... will jumping from my current 275/65-18 (I think these calculate to about 32") to 35 or to 37 be a major loss in the "power" at the wheels or is it negligible? I don't want to get into changing gear ratios either.
I have 3:55 gears and use an SCTx4 5* tune (87 octane pwr/towing). I don't notice any power loss. The only thing that changed from my 295/70r18 terra grapplers is that I can't break loose with these. These are a LOT of rubber to break loose though and that doesn't bother me. If I set to pass somebody at 65mph, and push the pedal down the front end jumps up and I pass them in a blink at about 80mph.
Oh. Forgot to ask... any ideas on roughly how high in inches the frame rail or bottom of front diff was off the ground when you were doing the work? I can get mine pretty high, but not 24". It seems there is enough room to lower the diff, but I don't want any surprises and find out I need it higher and I cant get it higher. My jack only jacks to 20" so that's where my jackstands are at. The diff sits higher than the frame rail so I have a little more height/room there to drop it.
I don't know how high I had it. I used a 4 ton floor jack, lifted it up and put the frame on stands (you can see in the pics. You have to remember that when you take down the differential, most of the front suspension will be gone, both crossmembers will be gone and the sway bar (along with hardware) will be out. This gives you a lot more room to drop the diff and take it out the side.
The frame on my 93 was worse than that. I took a wire wheel to it and then put some Por-15 on it.
Made a world of a difference, gonna get a finishing coat on it soon.
I'd say clean it up a bit and lift it is just lift it as it is.
Thanks all for the quick and very informative replies. I'm convinced and I'll order the kit today. As far as the tires/wheels, it probably just makes sense for me to stay at 35". I like the tune idea. Since it's not my primary vehicle I don't mind compromising mileage for performance. Maybe I'll try to get some pics or videos together. All I have is my phone though and I have tried the video thing on most things I do, but i get so caught up in the "fun" of the work that I forget to take the time to take pics or good video angles... so it never gets done. We'll see how this goes. I'll keep reading this thread in case anyone else drops more tips. Thanks again!
I have 3:55 gears and use an SCTx4 5* tune (87 octane pwr/towing). I don't notice any power loss. The only thing that changed from my 295/70r18 terra grapplers is that I can't break loose with these. These are a LOT of rubber to break loose though and that doesn't bother me. If I set to pass somebody at 65mph, and push the pedal down the front end jumps up and I pass them in a blink at about 80mph.
I break mine looks I have a 5.4 with the 3.55 and I got pissed and broke them loose and left a mark
Makes sense if you bought them new. Although I was very furious the day I did it haha. But I have an open diff and need to save up for a posi or limited.
08-31-2016, 11:38 AM
