Anybody familiar with the Tremec T5 Manual 5 speed. Doing some research for a Series 1, 2Plus2 and this seems to have potential.
I would appreciate any thoughts on the unit itself, installation pros and cons as well as any major modifications that might be necessary.
The outfit manufacturing the unit offers a compatible bell housing for a 4.2 and modified drive shaft that accommodates the long wheel base.
Thanks in advance!
I had a Tremec T5 5 speed installed three years ago and love it. The fifth gear really adds to driving enjoyment at freeway speeds. I did not do the install so I can’t comment on that. what is unusual is the this Tremec takes ATF fluid versus normal gear oil. I believe the tranny was obtained from The Driven Man.
Different vehicle but we had an older Mazda 626 V6 and the gearbox was always notchy until I drained the oil out and went to ATF, much improved changes and no adverse effects.
I just purchaced a brand new Tremec T5 kit with prop shaft an everything required (uses adapterplate with
original bell housing) I am about to install it into my Series one 4,2 litre E-Type. Havent got it in yet but will report what I experiance. Looking very much forward to the fifth gear (1 : 0,63) and the silence from a modern box.
Here is where I got it from:
Elite Racing Transmissions | Beagle Engineering Ltd Telephone: 01782 280136
Gearworks, Salem Street, Stoke on Trent, ST1 5PR
I’m not saying the 5 speed isn’t worth it but I get the same feeling every time I drive my 4 speed car now that the diff contains a 3.058 gear set. Previously I’d be looking for that non-existent 5th gear; not any more.
I had my 307 rear in my 70 coupe for close to 30 years from its original 354.
So I understand, BUT Mark was asking…
The t5 1. smooth as silk
2. with matching lightened flywheel and clutch is effortless
3. No leaking from the drain bolt, tail or gear box!
4. No burning oil smell on exhaust pipes.
5, at 50 your at 1,500 rpm…70 1,800 rpm and 90 2,100 rpm or close.
stock your screaming at 2,500 rpm at 50!
Much cooler tunnel and no cringing in any gears.
IMHO, If its out and your doing a real good job for the long haul, its a bullet proof set up.
The lightened flywheel makes it shift like a 1980s Honda accord, its effortless.
IMHO
I only do 6,000 miles every year in my old etype.
P.S add the high torque mini starter and your good for 30 years!
Enjoy guys…
GTJOEY1314
p.s. that’s with a 2 88 rear end…
Per you may now find that you don’t have roads long enough!!
With 185/70/15 tyres, 3.54 diff and 0.64 5th, you will be doing
2250rpm at 120Km/h (75mph);
1900rpm at 100Km/h (63mph).
Don’t be surprised if you find yourself STILL looking for yet another gear! But OK, lets not be greedy. My XJS is running 2000rpm at 120Km/h with a 0.7 5th and there aren’t many hills that she does not climb in 5th! You may experience much the same with the torque those sixes make.
The bottom line is that once you drive the car, the money you spent on the kit will be quickly forgotten, displaced by a perpetual smile. Improved fuel consumption also should broaden that smile.
I have concluded with my own transmission conversions (XJS = Tremec Tko500 and Jensen Interceptor Mk3 = GM 4L60e) that a transmission conversion is one of the very best upgrades one can do to these old cars - better even than an EFI conversion.
By memory but very close, I have a 288 rear too boot.
It might be 2,400 for 90 mph but its close.
The point being IF you want the 5 speed and go 3 07 or 2 88
Its a complete transformation…
Enjoy them guys
The electric xj , f pace and e pace are 5 months away…
GTJOEY1314
OOPS ALMOST FORGOT RUNNING 205/70/15 SIX INCH OFFSETS
I do like the 3.07 and wouldn’t give it up but – even though I do not miss whatever acceleration was lost I do notice a drop in engine braking when driving twisty mountain roads. Not a big deal, but something not often mentioned when exploring alternatives. Obviously a 3.54 w/ a 5-speed would avoid this trade-off.