wondering wot kinda diff is needed, or people are running without issues in a YB converted car using an atlas axle... power is stage 3 so round 300bhp mark.

 

Not on the road yet but im using a 3.44 in my cortina, depends what your doing with the car my axle builder said the 3.75 is the one to go for as a good all rounder, im planning on doing a few road miles with mine so went with the 3.44.

 

I'm using a 3.75 final drive, Tran-X LSD and 18 Spline Tran-x Shafts. Also the the tubes are fully welded onto the pigs head.

Looking at around 500bhp to run through it, car is not up and running yet though so cant comment on how reliable it is.

 

yea iv spoke to cuple people and they said 3.75, are u using a lsd? wot make dif also?

 

Dont have an LSD as yet, i had my axle buit for the car and the axle i used had a 3.44 so just stuck with it, im using HD single pice shafts as orginaly is was going to stick to under 300 hp, now my engine spec is growing and im not sure how long the axle will last, when it gos i will go for two pice shafts and a LSD.

What sort of things are you doing with the car.

 

What make and size of tyres are they on there?

 

im just running standard ford shafts, lsd and 3.44 diff gives about 20 mph per 1000rpm in fifth. no problems so far but then again i only run 195/50 15 tyres. grip will have big effect on what yo need

 

I'm runnig fostek half shafts and a d.r.e gripper diff group 1 hubs and 3.75 cwp never broke it yet with 400hp and 265/45/16 sticky tyres

 

Gripper seem to be popular these days, do they make anything suitable?

 

3.44 to 1 in my cortina using a ZF capri lsd

 

Avon cr500 245 45 15

 

I run 225/40/18's

 

I toyed with the idea of 18'' when i started building but wasnt brave enugh to go with it, how dose it sit on 18's i was strugling to get it low and level and clear every thing.

 

On my mk1 escort i ran a 3.44 baby atlas with 2 part r.a.c.e shafts & standard capri lsd that gartrac converted to 18 spline & uprated plates. Running 330bhp no problems (on leaf springs) Got used at Santa pod & track days. No issues.

 

you can get an 8.8 mustang axle with lsd with ratio of your choice for around Ł900 from america they are used as an upgrade for 500bhp+ mustangs so will handle anything you can throw at them far better setup than a Ł5k atlas imo

 

http://www.americanmuscle.com/frpp-s...mbly-0512.html

this is just one example

 

Sits fine and clears very tight tho. and thats with 10mm extra track on front due to brakes and 20mm on rear for the same. Prob will have to go for 35 profile on front just to be safe. don't forget mines a mk3 so i have a little more room i guess.

 

looks the part, im thinkin possibly overkill but its obviously gonna do the job even if went 500bhp (doubt very much i will lol)

does anyone think a capri lsd will cope with 300bhp from a YB then? as a semi cheap option, i spoke with a rally car building firm n was recommended a diff etc but its Ł900 and was told Ł1700 for a decent axle build.. i just want to get on the road to start with.

 

Give Lea Atkins a try top workmanship and reasonable prices, just tell him what you want to do with it he wont sell you stuff you dont need

http://www.ebay.co.uk/itm/BABY-ATLAS...item2ec0da90d7

 

Have you anymore these dont ship to uk.

 

Been running 3.75 atlas LSD, 225/45/16 direzza's, 380bhp Capri 2.0s, track days for 10 years only needed to renew the plates ....................... "use it till ya break it"

 

Never had a issue with mine either just make sure u use correct oil tho

 

thats who iv spoken to as it goes, advised me on a nice set up but double wot i expected iud need for a diff.... knows his stuff no question n is a great help jus i gotta think bout few mo things to get on road beore i fork out for a seerious diff n axle!