Billet Shift Forks Longevity?

[vTaKwiTHsLiCkS]

So I have a 6 speed transmission with the Ray P brace and OBX/SCE front LSD installed. I'll be adding the SCE center diff and a Broomfield Billet end case. I already have the billet 1-2 and 3-4 shift forks.

My Build (3.7L + GT42R) - Page 50 - 3000GT/Stealth International Message Center

I read post #497 and am a little worried about the longevity of the shift forks. I know OEM will last much longer than that.

Any thoughts or feedback will be greatly appreciated. Thank you.

[MeTarzan]

The only reason I could see for the forks wearing that much and failing would be some kind of clearance issue and the syncros wearing away at the surface which would happen even with stock shift forks as long as the billet ones are manufactured to a fairly tight tolerance

[anyonebutme]

Tarzan, it's not a clearance issue. When you see how the system operates you'll see why it wears there. Purely a material aspect. Fork pushes on the slider, not the synchro.

It wears there because that's where the softer aluminum is pushing on the steel during the shifting process. Other platform's aluminum forks have "wear plates" or buttons so the aluminum is not what's wearing. Elite Racing Transmissions in the UK have made stronger steel forks for our application, and it's what I recommend if getting aftermarket forks. It all depends on how you intend on shifting the tranny during racing. If you're not railing on the tranny drag racing, stick with the stock forks and punch the roll pins in place.

[MeTarzan]

Not sure why they chose aluminum in the first place. We make SRT4 forks out of 4140 Chromoly

[rossfashow]

Elite Racing Transmissions in the UK have made stronger steel forks for our application, and it's what I recommend if getting aftermarket forks.

Is it on their website?

[IPD]

So I have a 6 speed transmission with the Ray P brace and OBX/SCE front LSD installed. I'll be adding the SCE center diff and a Broomfield Billet end case. I already have the billet 1-2 and 3-4 shift forks.

My Build (3.7L + GT42R) - Page 50 - 3000GT/Stealth International Message Center

I read post #497 and am a little worried about the longevity of the shift forks. I know OEM will last much longer than that.

Any thoughts or feedback will be greatly appreciated. Thank you.

i woudn't trust OBX. Quaife > OBX.

[anyonebutme]

Is it on their website?

Don't know.

[i3igpete]

if you must get an OBX, get the one from supercar. philip does a bunch of reworking to those where the reverse engineers whiffed it.

[fullracegt]

i would think the sce forks are good it not like there cast,there forged but i agree that forged chromoly is a better choice

[vTaKwiTHsLiCkS]

Thanks for the replies guys..

The OBX unit is from SCE or atleast thats what I was told by the previous owner. I ended up pulling ou the Billet Shift Forks and OBX/SCE LSD in favor of the Qualife LSD and stock shift forks. After speaking with some of the faster guys on the forums (Ray, Matt, David, Adam, etc) seems most of them are using stock shift forks. Figured if its good enough for them, its good enough for me.

I do have a couple spare trannys. Might consider trying to throw them in another one to see how they do.