LS3 for the Tuscan

LS3 for the Tuscan

Author
Discussion

GTRene

16,314 posts

223 months

Monday 8th October 2012
quotequote all
thats a sweet sound, a TVR sound.

also tidy fit and nice to see the headers? go down and backwards instead of the "old" way, I guess less heat under the bonnet this way?

Edited by GTRene on Monday 8th October 22:35

Brummmie

5,284 posts

220 months

Tuesday 9th October 2012
quotequote all
The fact that Craig can actually manufacture his own exhaust manifolds, means that he can get routing through, where other people have to rely on "finding" a tight/small (restrictive?) set of headers as a solution.
I had a little sit in this one yesterday, and it was nice to see they managed to hook up the electronic dash correctly, i think some other people have struggled to mate GM/TVR wiring.
Nice and neat daily driver this one, a real GT car.

macdeb

8,487 posts

254 months

Tuesday 9th October 2012
quotequote all
Goes without saying clap [though I have repeatedly wink]

m3jappa

6,385 posts

217 months

Tuesday 9th October 2012
quotequote all
I want Ls power so badly. Anyone saying these are not right for Tvr have clearly never experienced one......just a perfect engine in every way.

packman10_4

245 posts

193 months

Thursday 11th October 2012
quotequote all
Whitey said:
To clarify, what companies now offer the LS conversion for a Tuscan?

Is it:
Steve Heath
Topcats

Anyone else?

cheers
Whitey
TopCats LS7 ;D



packman10_4

245 posts

193 months

Thursday 11th October 2012
quotequote all
Don1 said:
I saw the Tuscan at Ace Cafe last month, and had a good chat. I also saw the first Cerb (?), and they are very different animals, by the look of things.

As soon as it breaks cover, I'll let everyone know!
Next time a few of you are at the Ace Cafe let me know and i will bring the Tuscan down ....

Brummmie

5,284 posts

220 months

Thursday 11th October 2012
quotequote all
packman10_4 said:
Whitey said:
To clarify, what companies now offer the LS conversion for a Tuscan?

Is it:
Steve Heath
Topcats

Anyone else?

cheers
Whitey
TopCats LS7 ;D


Dyno Torque, the black Tuscan on the last few posts, and are also doing Craig Winstanley's Race Sag, that will be the most extreme yet!!

flyingdutchie

857 posts

193 months

Thursday 11th October 2012
quotequote all
The topcats job does look like it is a factory built car. Lots of oem GM stuff on it. If you are after a LS conversion Jasper, please use this forum very well and pick a converter with happy customers.

I am curious after the conversion of Don1. So, if you are following this thread, let us know how it is going.

I hope to be able to show you guys some results of mine within the next months. I am hoping for 2013 to be my first complete season to enjoy the Cerb in more than 3 years. More an more I am considering of selling the T5 gearbox, which is the strenghtened version from the gearboxman. It has probably 800 miles on it. Going for the T56.

Is there a difference between older and newer types of T56 boxes? I know the current camarobox is named the TR6060. Is there a certain version of the T56 which is the strongest?

jwoffshore

460 posts

253 months

Thursday 11th October 2012
quotequote all
flyingdutchie said:
Is there a difference between older and newer types of T56 boxes? I know the current camarobox is named the TR6060. Is there a certain version of the T56 which is the strongest?
The strongest version is T56 Magnum which is the aftermarket version of the TR6060. If you look at the TUET 11009 version, it is the close ratio one for the LS engine.

Ratios are 2.66 / 1.78 / 1.30 / 1 / 0.8 / 0.63

The TR6060 boxes I have seen are TUET 10310 with ratios 3.01 / 2.07 / 1.43 / 1 / 0.84 / 0.57

Edited to say: the older T56 boxes which you would get secondhand from a scrapped car (e.g. Monaro) don't have such a smooth gear change action.


Edited by jwoffshore on Thursday 11th October 21:36

Don1

15,928 posts

207 months

Thursday 11th October 2012
quotequote all
Arjen, I'll try to send you a mail tomorrow - things are a little busy!

Whitey, Steve Heath has stopped building cars - Topcats and Dyno Torque are the names out there at the moment that I know of.

jwoffshore

460 posts

253 months

Thursday 11th October 2012
quotequote all
Walford said:
there are 30 basic T56 boxes
There are many variations, but having already done the research on this for a Griffith, the TUET 11009 is the closest ratio box available off the shelf. You can get closer, but then you are looking at a custom build. It has the correct input splines for the standard LS clutches. It has a standard Tremec output spline. It has 3 alternative shifter positions, one of which is going to be pretty close. In the Griff, the forwards most is best. Don't know about the Cerb.

http://www.tremec.com/performance/t56m.html

Brummmie

5,284 posts

220 months

Friday 12th October 2012
quotequote all
flyingdutchie said:
The topcats job does look like it is a factory built car. Lots of oem GM stuff on it. If you are after a LS conversion Jasper, please use this forum very well and pick a converter with happy customers.

I am curious after the conversion of Don1. So, if you are following this thread, let us know how it is going.

I hope to be able to show you guys some results of mine within the next months. I am hoping for 2013 to be my first complete season to enjoy the Cerb in more than 3 years. More an more I am considering of selling the T5 gearbox, which is the strenghtened version from the gearboxman. It has probably 800 miles on it. Going for the T56.

Is there a difference between older and newer types of T56 boxes? I know the current camarobox is named the TR6060. Is there a certain version of the T56 which is the strongest?
T56 is a compromise fit, its a huge box and exhausts will have to be low or small, TKO a lot easier and allows a decent exhaust installation.
However Parts World in Cannock are doing great deals on the latest version of the T56, whatever its number is? If you must have one.




RichardD

3,560 posts

244 months

Friday 12th October 2012
quotequote all
Walford said:
How did you calculate what ratio,s you need
A balance between experience, thinking stuff through and computer simulation smile

Really though, it is a question of knowing the options for first gear and top gear, making a decision with all the other gears fitting into place.

Like with the right diff ratio, 6th gear could be the top speed gear, but this would mean first gear is very low probably a waste of time unless you wanting to reduce clutch wear in stop/start traffic, otherwise 2nd gear being the optimal getaway gear. Which would seem a bit daft.


jwoffshore

460 posts

253 months

Friday 12th October 2012
quotequote all
My judgement on the ratios was based on my experience driving a Corvette. Even the 2.66 1st gear won't seem very "tall" setting off from rest in cars of our weight. 6th gear will still be more than 200mph overdrive with a 3.45 diff.

The T56 is bulky. We have a new chassis in the Griff project to allow for that.

flyingdutchie

857 posts

193 months

Friday 12th October 2012
quotequote all
So, in case of 2,5" piping, you won't get the pipes beside the 5/6th gearhousing of the T56? That is the point where Rich made his "dents" in the 3" piping. Rich, are you using the standard shifter? Isn't it modified to let the stick come out where it should?

g20v6

118 posts

202 months

Saturday 13th October 2012
quotequote all
On my cerb I used a T56 and went down the same route with indenting the pipes along side the 5.6 th extension, but I only used 2 1/2 " diameter pipework. Will post some pics later. The pipework still cokes below the chassis frame. Shifter wise, I bought a kit from the US, kiesler engineering, they did an arrangement for the mid position shifter.

Omerta

2,009 posts

250 months

Saturday 13th October 2012
quotequote all
Rich uses a McLeod offset shifter that I sold him when I decided to go TKO instead of T56. I don't have the dimensions but from memory it brings the shifter up a couple of inches back and towards the driver.

I didn't want any pipe below the rails so the T56 didn't suit, but unless you're building a race car this may not matter to you. Kinked pipes hasn't stopped Rich making monster power!

flyingdutchie

857 posts

193 months

Saturday 13th October 2012
quotequote all
I'd really like to see some pictures on yours, Simon. I have 2.5" also. My intention with the car is to have a really fast sportscar/roadcar. I like the idea of having the overdrive with the sixt gear. As for the shifter... isn't it a lot easier to weld and bend it, so it comes out where you want, or am i talking nonsens?

g20v6

118 posts

202 months

Sunday 14th October 2012
quotequote all
Got under the cerb and took some pics.









The mid shift position of the gearstick is about 100mm in front of the T5 position, the only issue with the shifter kits is that there is not alot of space between the top of the gearbox and the body around the centre console. I ended up making a linkage for the shifter from the original linkage fitted to the monaro. Unfortunately I haven't got any photo's.

flyingdutchie

857 posts

193 months

Sunday 14th October 2012
quotequote all
Thanks, that makes it easier to understand what needs to be done to the exhaust. Mine is a bit higher.