3.08 Differential for LS Chimaera

[stefan1200]

Hi all,

as my present 3.45 diff is leaking, I'd like to take the opportunity to swap it for a 3.08 unit to get the revs down a bit on my 1999 LS Chimaera, especially for longer autobahn cruises.

I already talked to John from Readmanracing who informed me that these parts are no longer available as new. Nevertheless, John is kind enough to look out for used parts to provide me with a refurbished 3.08 diff.

Is there anybody out there who maybe has a 3.08 BTR pinion and crownwheel on offer or knows of any other source?

A complete 3.08 diff fitting a 1999 Chimaera would of course also be very welcome! ;-)

Cheers,
Stefan

[neal1980]

snap!!!

I also spoke to john who advised no parts exist.

I have just imported 2 3.08 I also have an ls.

In the back of this blokes unit sit 20 x 3.08,s.

Any takers if I get the lot sent over.

Me and mac have ours already.

[DangerousDerek]

One of the best modifications i made.
The 3.45:1 is too short for a lightweight TVR especially with a torquey V8.

My 1/4 mile times are the same at 12.4 with the 3.08 and it will cruise at 90 under 3000 rpm. I can get 30 mpg from a 330 bhp 4.6 if i behave.

The best part is that it doesnt run out of revs at 160. I achieved 176 in a standing mile and am sure the car will now do the magic 300 kph.

[macdeb]

neal1980 said:

snap!!!

I also spoke to john who advised no parts exist.

I have just imported 2 3.08 I also have an ls.

In the back of this blokes unit sit 20 x 3.08,s.

Any takers if I get the lot sent over.

Me and mac have ours already.

this is last chance saloon for new 308's, [I might buy 2 and have one as spare].

[SILICONEKID345HP]

Neal we spoke about it last time I saw you ,can you put my name down ? Daz

[DangerousDerek]

I will take one as a spare too please

[SILICONEKID345HP]

Neal six speed and a 3.08 ,you will be under 1200rpm at 70mph.

I wonder how this ratio would effect the performance around a track .The initial pick up may be affected.

[Pupp]

Interested Neal - any idea of the likely entry fee?

[Alan461]

SILICONEKID345HP said:

Neal six speed and a 3.08 ,you will be under 1200rpm at 70mph.

I wonder how this ratio would effect the performance around a track .The initial pick up may be affected.

Hi Daz, I think you might mean 2400rpm @ 70mph

[SILICONEKID345HP]

Alan461 said:

Hi Daz, I think you might mean 2400rpm @ 70mph

Neals LS Twin Turbo has a six speed box so coupled up with the 3.08 the RPM on cruise will be very low.

[OleVix]

I want one! I can send money tonight! By mail, fax, anything!

[phazed]

Put me down for one please Neal.............

[ChimpOnGas]

I probably don't have the power to pull it but I'd like one too.

Has anyone got a 3.08 Road Speed vs RPM table using the standard T5 box ratios?

[LongBaz]

Hi Neal. Put me down for one.
Cheers

[neal1980]

Will get a price ASAP thinking I should just bite the bullet and get all 20.

Seems like were at about 10 already without even trying.

Edited by neal1980 on Friday 11th December 22:04

[Discopotatoes]

I'll have one please Neal,

[OleVix]

neal1980 said:

snap!!!

I also spoke to john who advised no parts exist.

I have just imported 2 3.08 I also have an ls.

In the back of this blokes unit sit 20 x 3.08,s.

Any takers if I get the lot sent over.

Me and mac have ours already.

can you get a good price on them? I can probably get my mates here in norway to buy one or two, chim 500s
no matter what, I need one this winter

[DangerousDerek]

neal1980 said:

Will get a price ASAP thinking I should just bite the bullet and get all 20.

Seems like were at about 10 already without even trying.

Edited by neal1980 on Friday 11th December 22:04

just buy them all in 1, sound investment

[ChimpOnGas]

Here's what happens if I fit a 3.08 diff to 'Ol Gasbag' which is currently shod with 225/50 16 tyres and running a T5 box with a 3.77:1 diff....


At 50 MPH in fifth my engine is normally turning at 2,039rpm, with a 3.08 diff this drops to 1,665rpm

At 60 MPH in fifth my engine is normally turning at 2,446rpm, with a 3.08 diff this drops to 1,999rpm

At 70 MPH in fifth my engine is normally turning at 2,854rpm, with a 3.08 diff this drops to 2,332rpm

At 80 MPH in fifth my engine is normally turning at 3,262rpm, with a 3.08 diff this drops to 2,665rpm

At 85 MPH in fifth my engine is normally turning at 3,466rpm, with a 3.08 diff this drops to 2,832rpm

At 90 MPH in fifth my engine is normally turning at 3,670rpm, with a 3.08 diff this drops to 2,998rpm


So I think even 'Ol Gasbag' will easily pull a 3.08 diff.

I've consistently found the best economy can be achieved by keeping engine speed below 3,000rpm, so assuming it doesn't blunt acceleration in the lower gears a 3.08 diff seems perfect to me.

I'm a definitely in

[roseytvr]

I'm in please! That means a guaranteed buyer. Good work chaps.