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08-21-2012
i have a grand prix with the 4t65e transmission and its starting to slip. Im looking at buying a 4t65e hd tranny to replace it but i want to keep the 3.29 gear ratio. How do i do this? Do i just swap the differential before i put my tranny in? thanks for the help
08-21-2012
Keep the HD differential, and it's not where the gear ratio is. I I believe it's in the chain/cogs, and but don't quote me on that.
______________________SMGPFC #99_______________________
08-21-2012
If your right how hard is that to swap over?
08-21-2012
Why not just put another trans with the 3.29 gear ratio? You'll need a new cv joint on the passenger side if you go with the hd trans.
08-21-2012
Because i may be buying a gtp that has some fender damage but runs fine and top swapping mine. Since my tranny is about to go out i was going to swap them also but i want the 3.29 gear ratio.
08-21-2012
I'm not certain what needs changed out. I'd stick with the 2.93 though. You'll get better gas mileage.
08-21-2012
What about the difference in pull? Wouldn't 3.29s pull better though? Gas really isnt my concern.
08-21-2012
With 3.29's you'll have more wheel spin. I've ridden in a car with 3.29's and they had a hell of a time with wheel spin.
08-21-2012
True i didnt really think off that and i dont really want to but new rims and tires. So if i swap trannys when i order the pcm for the top swap do i just put 2.93 in the gear option?
08-21-2012
Yeah where are you ordering your tune from? You'll benefit greatly from an in car tune so that way you can make sure everything is good before you leave the place.
08-21-2012
I was going to get a zzp tune for starters so that i can drive the car until i can get a dyno tune or have someone who knows what there doing tune it.
08-21-2012
How fast is your car by the way DSMUTS can you take on 06 mustang gt's? Or GXP's?
08-21-2012
Not sure on the mustang as i don't know what they run but I rode in my buddies ls4 monte ss and I didn't think it was that fast.
08-21-2012
Have you raced any lt1 camaros or 01 gts?
08-21-2012
I haven't really raced anything worth while. I'm hoping to intercool soon and get it to the strip and see what i can run.
08-21-2012
Im just trying to get an idea on how fast a top swap with a 3.2 or 3.4pulley (depending on kock)intercooled,headers,180therm,CAI, and shift kit would run
08-21-2012
I rode in a cammed intercooled top swap with a 3.4 and it was quite a bit faster than my car.
08-21-2012
I like my 3.29s except for the gas mileage thing, which really isn't that even that different. These cars need more gearing. My suggestion is to get the non-hd trans and switch out the differential. The reason the tires spin is because your tires are putting more power to the ground.
______________________SMGPFC #99_______________________
08-21-2012
not the most educated on gear ratios here, but wouldnt the 2.93's have better top end and be better on the highway?
08-21-2012
I didnt think changing the diff changed the gear ratio. Gas and top speed dont really mean anything to me. I just want the best for 0-100.
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