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1G Liberty shot peening

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SasaniFab

Proven Member
2,433
782
Dec 1, 2013
Mexico, Connecticut
Before I purchased billet transfer gears in my current trans I had planned on just getting my stock gears shot peened and cryo treated. Since I have several of everything I sent a few sets out and included a few planetary sets. Everything looks awesome. The real question is .... is this all really worth it? Studies say yes .... guess we’ll find out
 

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They aren’t studying the kind of failures we get. No hardening really helps when the root of the tooth is ripping off the base circle. A different tooth profile, better material, or a larger gear are the fixes.
 
@amsrn13 have you taken your car to the track yet? I’ve been following your progress ever since your stock block fp black setup. Can’t wait to see what your car does on that 6266 auto setup:hellyeah:
 
They aren’t studying the kind of failures we get. No hardening really helps when the root of the tooth is ripping off the base circle. A different tooth profile, better material, or a larger gear are the fixes.
These gears will be going in a buddy’s trans Im building. He can’t afford the 1300 jbd gears so for 100 bucks he thought it was worth it.
 
@amsrn13 have you taken your car to the track yet? I’ve been following your progress ever since your stock block fp black setup. Can’t wait to see what your car does on that 6266 auto setup:hellyeah:
Soon , I’ve been really busy getting my cage finished
 

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I've had my transfer gears treated at liberty too, so far only a handfull of 15psi launches but nothings broken. I hope I can come back here a year from now and update with positive results!
 
Shot peening still doesn't help all that much. I honestly think its a placebo effect for the transfer gears, and you're better off just getting the straight cuts if you're already doing all the labor removing and installing factory gears.

In a 3355lb 1G cutting mid 1.3 to low 1.4 60fts, the stock shot peened gears STILL cracked at the root. Nothing saved them, even shot a gear out on the dyno and absolutely GRENADED the already hard to find auto transmission.

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