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 W57 W58 Handles How Much Power  

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tonka hilux
  • tonka hilux
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  • Member No.: 134,394
  • Joined: 20-August 08
  • Posts: 691
Post #1 post 1st September 2008 - 02:58 AM
am wondering what people here are running w57 or w58 gearboxes and what engines and power they are running infront of them. i have a w58? to go behind my 308. ive been told by various people that they only handle 200ish hp and others that they handle 400ish hp and others that they can handle well over 1000hp. so am wondering what people are using out there.
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slow laser
Post #2

its the torque that kills gearbox's so its a lil hard to answer that, the one in the soarer is copping 350rwhp without a problem....

just drive it with some sympathy and it will easily survive behind the 308.

tonka hilux
Post #3

im running a 355 bored right out, large cam, custom twin throttle setup and a few other bits and pieces. is there a way to get them strengthened up.

mongrel_cae71
Post #4

PPG sell gear sets but i hope you've got deep pockets.
at those prices it might make more sence to import a tremec tr3535, t56, TKO, etc

slow laser
Post #5

yeah that amount of torque would most likely pop the w58.

iamhappy46
Post #6

It is not just the peak torque that kills them but they way the torque output feeds on. If the torque delivery is on/off due to a big cam or big turbo, then the sudden rush of twisting force is what destroys the box.

slow laser
Post #7

more instant torque in a tuned, bored V8 then there is in a small, big boost motor....

all im saying is, sure could hold up with some smart driving, no clutch dumps or bogan styles, but most likely it will pop if u get up it behind that motor. id go the tko or tremec route.

tonka hilux
Post #8

so not even worth the risk. may just look at going back to turbo 350 or 400 and sell this off.

iamhappy46
Post #9

Sell it now, it wont be worth anything once you have broken it wink.gif

slow laser
Post #10

^^ X2

tonka hilux
Post #11

anyone know of any turbo 350, 400 or 700 for a holden v8 going anywhere.

iamhappy46
Post #12

Get a built one... www.craigsautos.com.au smile.gif Some of the best boxes in the business biggrin.gif

tonka hilux
Post #13

been doing more research and found a few people running high hp engines with w58 boxes and no probs. as high as a 467rwhp slr and only went through 2 s/hand boxes in 5 years and was only snapping the input shaft.

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