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8.8 rear end swap

13K views 17 replies 5 participants last post by  94sccoupe 
#1 ·
What all is needed for an 8.8 rear end swap? What all would I need to pull from a GT?
Will it all hook up to the driveshaft that's on the v6?
Just need info and how to before I go looking and get the wrong parts.
 
#7 ·
KM98Stang said:
No problem man. If you have a 5 speed get 3.73 gears, automatic 4.10.
I have an auto and I really want 4.10s but I might have to change that after boost.
Quick question
How much can the stock rear and tranny handle?
I look at adding a M112 blower at about 8psi before I change the rear end. I'll be making around 275rwhp and 300ft/tq.
I don't wanna break anything but I wanna be able to keep but with some of my friends with 8s.
 
#8 ·
Yah everything KM98STang said plus the quad shocks. The GT's had them and you'll want them on your v6...the bolt pattern is on the v6 frame, so they'll bolt right up.

I'd honestly stay away from the M112 idea...it's way more hassle and money spent compared to a centri styled charger or turbo application.

Unless you do some serious fabbing plan on spending $900 for the adapter plate alone, most likely pay more for the plate than the damn M112. Plus I don't believe you can use the intercooler system as there's not enough room.

If you had a 94-98 single port v6, I'd recommend an M90 supercoupe swap, but I think a procharger or turbo would be more beneficial on the 99-04 v6.

Anytime you add FI or build the engine plan on beefing up brakes, suspension and drivetrain. The rearend's main weakness is the spider gears withing the differential...they are prone to breaking under stress. So an upgrade to an 8.8" would be your best bet.
 
#10 ·
Well if you're up to it and you get it for a good price go for it...just keep in mind there's no way to cool that roots styled and the eatons, or heatons are known to heat up lol.

I'm thinking you mean a pulley swap, not an underdrive pulley, you don't want an underdriven supercharger. Most m112 guys will do a pulley swap to run more boost, but keep in mind you don't want to push much more than 8lbs on stock internals, drivetrain, brakes etc.
 
#11 ·
Ya that's the problem is not being able to cool them. I did mean pulley swap but only after I build the engine and upgrade to some big brakes and up the suspension and do the 8.8 swap. I wanna see around 400-450rwhp all said and done, but it's going to be a few years project.
 
#12 ·
Yah that's one heck of a project...from what I've seen 3.8/4.2 wise, the 400 rwhp range is achieved easier thru turbocharging...not saying you can't achieve those numbers with a roots styled charger, but there are a few TMA Turbo v6's out there making some impressive numbers.
 
#13 ·
sonicpony03 said:
Yah everything KM98STang said plus the quad shocks. The GT's had them and you'll want them on your v6...the bolt pattern is on the v6 frame, so they'll bolt right up.

I'd honestly stay away from the M112 idea...it's way more hassle and money spent compared to a centri styled charger or turbo application.

Unless you do some serious fabbing plan on spending $900 for the adapter plate alone, most likely pay more for the plate than the damn M112. Plus I don't believe you can use the intercooler system as there's not enough room.

If you had a 94-98 single port v6, I'd recommend an M90 supercoupe swap, but I think a procharger or turbo would be more beneficial on the 99-04 v6.

Anytime you add FI or build the engine plan on beefing up brakes, suspension and drivetrain. The rearend's main weakness is the spider gears withing the differential...they are prone to breaking under stress. So an upgrade to an 8.8" would be your best bet.
+1 on the m90 swap, i love it, if i could only get it back so can enjoy it
 
#17 ·
It should look a little like this

View attachment 47561
It's funny because the average person wouldn't even notice it sitting there, tucked in behind the hoses etc.

They probably think it's a big water pump or something lol.

Now the Whipples and the KB's are a different story, no hiding those monsters :D
 
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