FJ5
Well-Known Member
Who has them, and what is your opinion?
4l80e's will withstand 1500 or so hp.......having an OD will be pricey any path you choose.
i've never heard bad things about the GV overdrives. you can also switch to a more modern trans with OD/Lockup converter (whether mopar or gm) but both will also require cash on hand; they might get slightly better mileage because of the lockup converter, but take a lot more work getting them to fit and getting the electronics correct.
my only suggestion is that if this is an extreme build (very high torque / hp) that even 727's will start hacking. at that point you would go with a jerico manual trans setup (they are not overdrives, final 1:1 but 1st gear is very low, requiring less rear axle gearing) and they can handle all the power you can throw at them. but again you are talking big dollars. and they are not necessary if you have a mild/moderate street build. but if you have a blower, turbo, or nitrous and 12" slicks that hook hard and you are beyond the point of blowing 727's, you will want to look into them. http://www.jericoperformance.com/
if you have an extreme application that needs overdrive you would have to look at Lenco
it depends on your build.
Who has them, and what is your opinion?
I don't know about the final ratio but it does not feel like 2.76.
Like I said it's 70 MPH at 3000 rpm. My wife's car has the 2.76 in it and it's no where near that. My transmission may be geared differently than stock as it's a race transmission from SMR. Maybe the gears in the tranny are lower to start with...I don't know for sure but like I said it feels like 323's when the OD kicks in.
I agree that the split shifting crap is just that.
Will the GV unit bolt to the stock tranny mount in my 70 swinger?