Ultimate Ultima?
Discussion
Anybody thought of putting one of these in an ultima?
[url]www.supervipersystems.com/Upgrade_Systems/SVS_Stryker_TT_Stage_III/svs_stryker_tt_stage_iii.html [url]
or
[url]www.hennesseyperformance.com/hennesseyperformance/ItemDetail.php?Item_ID=18&cart=xdlnuikI[url]
Probably undriveable (even though the chassis will take 1000bhp?) but would be 450- 500k cheaper than the Veyron.... and the top hennessey would be 50% more powerful! Engine weight approx 250kg, but power would compensate.
[url]www.supervipersystems.com/Upgrade_Systems/SVS_Stryker_TT_Stage_III/svs_stryker_tt_stage_iii.html [url]
or
[url]www.hennesseyperformance.com/hennesseyperformance/ItemDetail.php?Item_ID=18&cart=xdlnuikI[url]
Probably undriveable (even though the chassis will take 1000bhp?) but would be 450- 500k cheaper than the Veyron.... and the top hennessey would be 50% more powerful! Engine weight approx 250kg, but power would compensate.
There's a 1300 hp tt chevy powered Ultima here in the states:
www.ultimaclub.com/Fastest%20Production%20Sportscar.htm
www.ultimaclub.com/Fastest%20Production%20Sportscar.htm
Hennessey also upgrade the viper's 6spd box, so you could actually use the 1000-1500bhp rather than have to manually lower and raise the boost once you've got going to allow for the relative weakness of the gearbox. A viper chassis is designed to take 500bhp so if it stand 1500 an ultima (designed to take 1000bhp) should be ok. Also much easier (& cheaper.. relatively!) to use an already developed solution rather than designing your on engine from scratch as spectrum have. Whether a viper V10 (& gearbox) would fit in an ultima is a different matter. The spectrum is definitely an awesome machine, though..
nmmg said: 2003 viper reportedly has a good shift quality and is quite rapid across the gate. The fact that it not a transaxle would be more of a problem!
They may have improved it for 2003. I was merely used to that gearbox in another application (Lotus Carlton) and it let the car down. They use the ZF 6 speed in the big Astons, the Holdens and Corvettes, too.
Way to go would be a sequential if you could afford it - maybe if it fell off the back of a race transporter
nmmg said: 2003 viper reportedly has a good shift quality and is quite rapid across the gate. The fact that it not a transaxle would be more of a problem!
domster said:
They may have improved it for 2003. I was merely used to that gearbox in another application (Lotus Carlton) and it let the car down. They use the ZF 6 speed in the big Astons, the Holdens and Corvettes, too.
Way to go would be a sequential if you could afford it - maybe if it fell off the back of a race transporter
I don't know for sure which transmission the Lotus Carlton used, but it may be, as you say, the ZF 6 speed also used in the Corvette from the late 80's through 96.
However, current Holdens, Corvette (C5 97+), Camaro & Firebird (4th gen), Viper, and big Aston (supercharged V8 Vantage) all use the Tremec T56 (a beefier Borg Warner T56 offshoot) or the Borg Warner T56 itself. It's a different transmission from the ZF, as far as I know, which would certainly explain the better shift quality.
I once drove a 97 Camaro Z28 with the 6 speed, and while I didn't like the car, shift quality seemed suprisingly good to me, though it was criticized by Brit mags.
The T56 gearbox can be mounted as a transaxle by changing the tail portion of the gearbox - the current corvette uses it in this configuration. Unfortunately as the diff sits behind the transmission it's not worth even contemplating using it in an Ultima chassis.
Tremec produce about 30 different versions of the T56 box - some of them are downright cumbersome to use, others are smooth as silk - the 2003 Viper box is reckoned to be the pick of the bunch.
Tremec produce about 30 different versions of the T56 box - some of them are downright cumbersome to use, others are smooth as silk - the 2003 Viper box is reckoned to be the pick of the bunch.
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