Rear End Swaps
 

Ok guys got a couple of questions about rear end swaps
for a 86 non turbo my gears are 4.10 right, the gtu's have 4.30 gear i think, those two rear ends can be swap right. or are all non turbo rear ends the same besides the gears

beter yet is there a website that has a list of all the swaps that are available for the 2 gen. like transmissions,rear ends, that type of stuff.

GTUs is an actual model, very rare it is like an autocross ready n/a ....good luck finding the differential, easier to find a differential from an 89-91 T2......they have a different posi then the 87-88 T2

that s ways meaning more then one gtu, because the gtu had diffrent final drive gears the the gxl, se,

This is confusing, so let's see if I can clarify.

Pretty much all automatics had the 3.90 gear.

Pretty much all of the manuals had the 4.10 gear

The ONLY cars that came with a 4.30 gear, that I know of, are:

88 GTU
89-90 GTUs

The 88 GTU and 89-90 GTUs are the super NA RX-7, stripped, with all the go fast goodies.

the 89-91 GTU is the base model for 89-91.

PaulC

Im not sure, but i think that the 88GTU had a 4.10LSD, not a 4.30. But i may be wrong. Anyone clarify either?

I'll look it up when I get home, I have the FSM there, it should list it.

T he 88 GTU was t2 without te t2 drivetrain, but it had a gxl rear end.Basically a gxl with a spoiler and t2 seats

88 GTU has 4.3 ratio?
 

Sorry, bro. Wrong answer. No US delivered 1988 Rex's came stock with 4.3 gearing. 4.1's in all '88's except Automatics (with exception perhaps of GXL's) and the Vert.

Some thought that that S4 and S5 Jspec Rex's with Manual Tranny's had 4.3 though.

god damn i got a fucking piece of shit gxl hiding in my rollup windows and manual lock doors fuck that.... hey man i still love my car

SHAUNB all na trans and diffs are swapable to your car and all turbo trans and diffs require that you get the whole turbo driveline or or or get a t2 trans clutch flywheel and an automatic driveshaft and that will connect to your na diff...As for the starter do you need a turbo starter???? anyone

and yep, I'm wrong. Only the 89-90 GTUs got the 4.30.

PaulC

have fun taking it out, it it is a pain in the ass. there are 3 bolts at the end of the diff. that are hidden by a crossmember and it is a slut to get htem out

Damn, i wanted to bust out a 4.3LSD swap on my 86 base, .. but... they only came in certain verts and in GTUs (the model, not the plural of GTU)?

Thanks, and.. anyone have a 4.30 for sale? haha

well what i will be running when i get it together is a 90 t2 motor with a 7 inch supercharger, a 90 t2 tranny, and hopefully if i can find one, a gtu rear end, with with 4.30 ratio, and its a 86 gxl, which is one of the lightest FC's made, what drive shaft should i use, or which will work. the t2, or the gxl. thanks for all the imput guys

to bad there's not a website just based on rx7 swap's, like whats compatable, and whats not.

You will need the Automatic N/A driveshaft or if you want to use a TII driveshaft you wil have to use the TII rear end b/c the bolt pattern is different. The reasoning for the automatic driveshaft is bc it is shorter as you will have to use a shorter driveshaft.