Need PSI

hey guys im thinking of buying another diff for my ea, my cars a 3 speed auto, i got told the diff ratios are shit on these (as are the transmissions) so i want to upgrade to make it a bit quicker, i dont care about top end speed all the much, i just want to be able to get off the line quicker and have a repectable 0-100 time. any one got any ideas??

what model e-series came with a shorter ratio diff??? I would like lsd too?? if any one has any suggustions and knows what model it came out on feel free to add your opinion.

also how much does a second hand diff cost from a wrecker???

thanks guys and girls.

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White 1988 EA Fairmont Ghia ~ Gassed ~ EF camshaft ~ Lowered on super low king springs (not low enough) ~ 2.5inch cat back exhaust system with one muffler ~ Clear indicators ~ Simota POD filter ~ New head built for gas ~ 3.23 open wheeler diff ~ EF XR 16inch rims ~ pioneer deck and rear speakers ~ sony front speakers ~ kyb shocks

driving a 3 speed auto with no second gear!!!

EFFalcon

EF/EL XR's and Ghia's scored a 3.45 LSD
i think there is a 3.23 aswell. any higher then that with the 3spd and it wouldn't be fun :)

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1995 EF II Falcon GLi: Heritage Green, 4spd Auto, AUII 17" Rims, Custom BA Front Bar, Lowered, Gas Research LPG, Clear Indicators, JVC MP3 Headunit, Phoenix Gold 6.5" Splits, Coustic 481QE Amp, Clarion 12" sub, Leather Seats, Power Window Conversion, 3.45 LSD, Pacemaker Comp Extractors, 2.5" Exhaust, Mandrel Bent Intake, High Flow Filter, Wade 1004 110 cam.

In Progress: BA XR Side Skirts, BA XR Rear bar, BA Shifter Handle.

blueoval

Some EB XR8's came with 3.27's as standard like mine before I changed it. But you cant go past a 3.45 for drivability and performance. Problem is where to find one in good condition!

Beware of going too high in ratio as you torque will be used up too early as you accelerate.

Anything between a 3.23 to a 3.45, 3.7's maybe should be fine for your current setup.

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2000 AU2 75th Anniversary Futura

SUPERCHARGED & INTERCOOLED

barry_v

4 speed autos like mine have a 3.23
plenty out there.

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1992 DC LTD 5.0
Duel exhaust, Genie extractors, Ported E7 heads, ported lower HO inlet, 70mm maf, Underdrive Pullies

old_mate

4.11 will get you awesome 0-100kph, but your revs at 100kph would be thru the roof.

even 3.45/3.7 would have it revving near 3 grand (rough guesstimate)

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EL Fairmont
XY Fairmont

...mmm clevo...

YOOT

3.45 on my 4spd is 1900 at 100kmh, roughly 200rpm higher.

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blueoval

puttin 4.11 in a 3 spd EA is not really the answer for an everyday street car. Drivability would be of concern imo.

I reckon you would get a pretty big kick in the pants putting a set of 3.45's on a 3spd EA coming from a 2.77 or whatever.

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2000 AU2 75th Anniversary Futura

SUPERCHARGED & INTERCOOLED

Bass Crazy

I have had my car with a 3 speed and 3.23 diff. It was a huge improvement over the 2.77 diff. At 100km/h it sat on 2700rpm. I would not suggest anything much higher then that.

If you are not concerned with driving the car on the freeway, and don't care about rpm.. a set of 3.9's or 4.11's with a few breathing mods like exhaust, intake (cam would be good) will have you a nice quick car!

Simon.

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CAUTION: Slippery When BOOSTING!

Walkinshaw

Ive got 3.08's (4speed Series 2 EA) and sit at arround 1700rpm at 100kmh, and still find it slow off the line, and as the 3 speed has the same 1/2/3 ratios as the 4speed i wouldnt go for 3.08's if your making a change. 3.23/3.45 would be the way to go.

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Ive been described as a vault of usless random knowledge.

Ill take it as a complement i think.............

MightyEFGhia

3.45s at 1900 at 100?? mines like bout 2200 on my EF