84GSLSE 13BREW Swap build

[DWNUNDR]

So I did get around to making my hoses and installing them, and today continued the saga of making the fuel system...

[ian65]

some great work and nice parts going into this car

[Tepper]

Very nice, I'm at a similar stage with my fuel system and those pictures have given me some good ideas.

[Hobbawobba]

Nice colour combo.. even if they'll never be seen

I may have missed it.. Are you upgrading your rear end or going to keep it standard?

[DWNUNDR]

Nice colour combo.. even if they'll never be seen

I may have missed it.. Are you upgrading your rear end or going to keep it standard?

gslse rear end.. should be able to handle the power for a while... I wont be abusing it.. much hahaha

eventually I plan on an 8.8 Ford Explorer swap or am currently watching a 9inch rear on auction that is under $50 for the whole rear... 8.8 is lighter but as strong...

[Hobbawobba]

Bargain if that works out aye!

Ahh yeah. I'll be using my OEM rear end also aye haha. No hard launches for us . I'm unsure what rear end I could use in the UK. Not sure if they're very common over here

[DB RX63]

I'm assured by one that knows, that the UK standard FB axle is good for 300bhp.

[DWNUNDR]

I'm assured by one that knows, that the UK standard FB axle is good for 300bhp.

yeah Ive read many people running over 400whp and being ok.. all comes down to the abuse.. Ive also read stock 12a and 13Bs blowing them

[KYPREO]

One of the many reasons I dislike the FB" nomenclature is that it makes it sound like all 81-85 models are the same

There are 2 types of axles during the relevant period: 24 spline axles and 26 spline axles.

84 to 85 models in the UK and Australia (what we call series 3) got the 26 spline axles with open diff centre 3.909 ratio.
81 to 83 models in the UK and Australia (what we call series 2) got the 24 spline axles with open diff centre 3.9 ratio

In the LHD market it all changes.

84-85 models in the US and Canada came with different specification levels equipped with different wheels and brakes. The base models got the earlier style axles with open diff centre, smaller brakes and 4x110 stud pattern 13" wheels. The GSL and GSL-SE got the 26 spline axles with bigger brakes and 4x114.3 stud pattern 14" wheels. The GSLSE also got a LSD with 4.1 ratio.

The 24 spline axles are average.

The 26 spline axles can take a bit of abuse. Once you have a sturdy box and diff centre, however, the axles become the weak point in the chain. An acquaintance of mine from way back had his series 3 with 12AT running down into the low 10 second quarter mile. On the way to getting this fast, he had to upgrade to a s5 turbo box and Torsen LSD centre. But in the 10s he began breaking axles on a pretty regular basis. Now this is hard launching on the drag strip with sticky tyres.

An 11-12 second car is still FAST and the 26 spline axles should be able to cope with on street tyres. Even with 400rwhp you will be struggling to get traction before you need to worry too much about axles. If you get some grip on those tyres however, different story.

[DWNUNDR]

good info.. I had a 2nd gen with a 12a Turbo when I lived in Australia.. never broke anything... but it wasnt a 10sec car.. low 12s maybe...