Discussion
Hello there, bit new on Pistonheads as a member but have browsed the topics on a regular basis. I'm currently re-building and modifying a 1977 Taimar. I'm fitting a 289 small block but I need a T5 gearbox, either from a Mustang or a Cosworth. Can anyone help? I'm on a budget (who's not!)living in the North East of England. Hopefully I'll get some pictures on the forum soon of what else I'm doing to my car. Cheers, Craig
T5s come with different input shafts, bellhousings, tailshaft extensions, and input shaft bearing supports.
The bellhousing has to match the block, transmission bolt pattern, input shaft bearing support diameter, and the length of the input shaft. The tailshaft extension dictates the shifter location. The favoured combination seems to be all Ford V8 up to the tailshaft extension, and the tailshaft, housing, and associated bits and bobs from a Chevrolet S10 T5.
Best,
B.
The bellhousing has to match the block, transmission bolt pattern, input shaft bearing support diameter, and the length of the input shaft. The tailshaft extension dictates the shifter location. The favoured combination seems to be all Ford V8 up to the tailshaft extension, and the tailshaft, housing, and associated bits and bobs from a Chevrolet S10 T5.
Best,
B.
Thanks'B' for all the info given, I have the bellhousing for the small block, flywheel, clutch etc. I decided to go for a small block as they were fitted to some American exports,its not that much heavier than the Essex once all ancilliaries have been removed, it was the right price, its a V8, it fits....just, upgrading parts are relatvely cheap and its a V8. The chassis was in a sorry state, so it was blasted back and repaired, strengthened in a few areas around where the rear roll cage is going. I have re-newed all the steering parts and polybushed the suspension. the rear hub mounts have been strengthened to accept a rear disc conversion I am working on. The body has been rubbed down and an SE kit fitted (thanks Mr Venn) and will be re-sprayed its origional Ford radiant red. In all its a total nut and bolt re-build with a raft of subtle modifications. Some people would consider its blasphemy, but as no TVR's were exactly the same when they left the factory, I'm just making a well designed classic slightly more enjoyable to drive and own, which to me personally is the whole point of tinkering in your garage.
I'm doing something similar here, newer engine (late 80's roller cam 5.0)older car, t5 gearbox. The following info is based on personal discoveries, net trawling etc and is by no means expert but could be helpfull.
I ended up with a 90's Griff t5, it has an external linkage that moves the gearlever forward (18" to 12 1/2" measured from the gearbox face, a cosworth box is around 21" which puts the stick near your elbow!!) Input shaft is 23spline (same as a Cossie) a Griff, Chimera or v8 Range Rover centre plate will fit. The spigot is slightly smaller than a Mustang t5 requiring a Cosworth bearing and a sleeve to be made, also a spacer of just under 1/4" is needed where the box spigots into the bellhousing. Mine had a removable blanking plug in the speedo drive, the worm is on the output shaft though. Cossie box's appear to be the same apart from the gearlever position.
I have seen later Tvr box's advertised that are made with the gearlever in the most forward position, weather they have provision for a mechanical speedo drive i could'nt say as the original host's had electronic speedo's.
Slow M, hope you can help with a quick question, my engine was auto so no spigot (pilot) bearing, is the bearing and spacer an interferance fit in the crank and are the spacers ally or mild steel.
Tim
I ended up with a 90's Griff t5, it has an external linkage that moves the gearlever forward (18" to 12 1/2" measured from the gearbox face, a cosworth box is around 21" which puts the stick near your elbow!!) Input shaft is 23spline (same as a Cossie) a Griff, Chimera or v8 Range Rover centre plate will fit. The spigot is slightly smaller than a Mustang t5 requiring a Cosworth bearing and a sleeve to be made, also a spacer of just under 1/4" is needed where the box spigots into the bellhousing. Mine had a removable blanking plug in the speedo drive, the worm is on the output shaft though. Cossie box's appear to be the same apart from the gearlever position.
I have seen later Tvr box's advertised that are made with the gearlever in the most forward position, weather they have provision for a mechanical speedo drive i could'nt say as the original host's had electronic speedo's.
Slow M, hope you can help with a quick question, my engine was auto so no spigot (pilot) bearing, is the bearing and spacer an interferance fit in the crank and are the spacers ally or mild steel.
Tim
Tim,
There's a pilot shaft bushing available as a standard 260/289/302 part, and a Ford Motorsports pilot shaft bearing*.
Either version should be an interference fit in the crankshaft. The hole in my 4340 ChroMoly stroker crank was not machined deep enough, so .075" was removed from the end of the spacer (see below).
B.
There's a pilot shaft bushing available as a standard 260/289/302 part, and a Ford Motorsports pilot shaft bearing*.
Either version should be an interference fit in the crankshaft. The hole in my 4340 ChroMoly stroker crank was not machined deep enough, so .075" was removed from the end of the spacer (see below).
- This is a needle roller bearing that is pressed into a heavy (iron?) spacer. The bearing has an integral grease seal.
B.
B,
Thanks for that, you mean this http://www.summitracing.com/parts/fms-m-7600-a/med... Looks like it might be die cast. I'm going to replicate the housing/spacer in mild steel to take the slightly smaller bearing i need, hopefully it won't fall out!!
thanks again Tim
Thanks for that, you mean this http://www.summitracing.com/parts/fms-m-7600-a/med... Looks like it might be die cast. I'm going to replicate the housing/spacer in mild steel to take the slightly smaller bearing i need, hopefully it won't fall out!!
thanks again Tim
Sfruitbat said:
Hello there, bit new on Pistonheads as a member but have browsed the topics on a regular basis. I'm currently re-building and modifying a 1977 Taimar. I'm fitting a 289 small block but I need a T5 gearbox, either from a Mustang or a Cosworth. Can anyone help? I'm on a budget (who's not!)living in the North East of England. Hopefully I'll get some pictures on the forum soon of what else I'm doing to my car. Cheers, Craig
Not sure what "on a budget" means. You cant build it properly for nowt (ask Heightswitch when mrs Heightswitch is not around), if you are going V8 you can only do it one way, properly.Given you are in UK your first port of call should be Elite Racing Transmissions in Stoke on Trent
Can't help with a T5, but do think you're doing the 'right' thing, by not only upgrading to another engine/gearbox AND reinforcing chassis, brakes, suspension and what have you. Kept mine stock (essex) and i don't see the point on a 5speed on it (i'll get shot again, now)
some pics would be highly appreciated............
some pics would be highly appreciated............
bluezeeland said:
Can't help with a T5, but do think you're doing the 'right' thing, by not only upgrading to another engine/gearbox AND reinforcing chassis, brakes, suspension and what have you. Kept mine stock (essex) and i don't see the point on a 5speed on it (i'll get shot again, now)
some pics would be highly appreciated............
The 4 speed ford box behind the Essex is very strong, change is lovely and ratios are good.some pics would be highly appreciated............
I have a T5 in my racer and its taken ages to get it to shift as well as the old ford unit. I always thing that those that fit the ford 5 speed behind the essex are the ones needing to be shot...
To post pictures:
1. Make sure picture is less than 2Mb (you can do this on windows PC using MS office picture manager if you have Office.
2. In the reply to topic box, just above the text box, there is an option: "Upload an image", Click this
3. Browse to the saved piccy and click on it
4. you will then go back to the original screen. Hit "Upload"
5. make sure you dont loose the IMGs in square brackets at each end
6. hit submit and there you go
1. Make sure picture is less than 2Mb (you can do this on windows PC using MS office picture manager if you have Office.
2. In the reply to topic box, just above the text box, there is an option: "Upload an image", Click this
3. Browse to the saved piccy and click on it
4. you will then go back to the original screen. Hit "Upload"
5. make sure you dont loose the IMGs in square brackets at each end
6. hit submit and there you go
Edited by Astacus on Sunday 25th November 20:53
TVR_owner said:
The 4 speed ford box behind the Essex is very strong, change is lovely and ratios are good.
I have a T5 in my racer and its taken ages to get it to shift as well as the old ford unit. I always thing that those that fit the ford 5 speed behind the essex are the ones needing to be shot...
I have the Ford 4 speeder in my Tasmin, and it is indeed a nice slick and quick shifter, and works well behind the 2.8i as well as the Essex. I also owned a Holden Commodore here in NZ, which have T5 box behind the 3.8 V6 (The Buick, more or less).I have a T5 in my racer and its taken ages to get it to shift as well as the old ford unit. I always thing that those that fit the ford 5 speed behind the essex are the ones needing to be shot...
The T5 is nice, but it won't change nearly as swiftly as the Ford does IMHO.
By comparison the Ford 5 speeder is very weak (even the 2.8 engine tends to eat layshafts)
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