Upgrading Evo 9 trans to Evo 8 4th and 5th gearing
Dec 1, 2008, 06:22 PM
#1
Upgrading Evo 9 trans to Evo 8 4th and 5th gearing
I currently have an Evo 9 trans in my car which has been built by shep. Don't ask me why I didn't just get the Evo 8 4th and 5th while it was there thats another story.
Reason why I'm upgrading is because I ran at the track 2 weekends ago and even with me loosing traction all of first and some of second I still trapped 120mph in 4th @ 8k. I don't have a built engine and don't plan on building it anytime so getting the Evo 8 4th and 5th gear would be a huge help and fit my power level perfectly.
Anyway like I said I have an Evo 9 trans in my car, but if I had shep put in the Evo 8 4th and 5th it really wouldn't be the Evo 8 4th and 5th because the final drive wouldn't be an Evo 8 right? What would have to be done to get the correct ratios that would put me at approx 130mph in 4th @ 8k.
Sorry I don't really know that much about transmissions and was just curious. What do you guys think?
-thanks
Reason why I'm upgrading is because I ran at the track 2 weekends ago and even with me loosing traction all of first and some of second I still trapped 120mph in 4th @ 8k. I don't have a built engine and don't plan on building it anytime so getting the Evo 8 4th and 5th gear would be a huge help and fit my power level perfectly.
Anyway like I said I have an Evo 9 trans in my car, but if I had shep put in the Evo 8 4th and 5th it really wouldn't be the Evo 8 4th and 5th because the final drive wouldn't be an Evo 8 right? What would have to be done to get the correct ratios that would put me at approx 130mph in 4th @ 8k.
Sorry I don't really know that much about transmissions and was just curious. What do you guys think?
-thanks
Dec 1, 2008, 06:30 PM
#2
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u def... DEF need to get that 4th...
i make around 560whp and with my stock 4th i ran out of 4th EVERY TIME at the track... got a shep built tranny (after i broke mine hahaha) and now she pulls hard all the way to the end in 4th.. trapping around 128-131
i make around 560whp and with my stock 4th i ran out of 4th EVERY TIME at the track... got a shep built tranny (after i broke mine hahaha) and now she pulls hard all the way to the end in 4th.. trapping around 128-131
Dec 1, 2008, 06:36 PM
#4
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think evo 8's that shep does are 3 and 4th,, not 5th, but i might be mistaken.
I'm doign the same thing in about a week or so.. except I'm getting double synchro 5th too.
I'm doign the same thing in about a week or so.. except I'm getting double synchro 5th too.
Dec 1, 2008, 06:45 PM
#5
I'm getting a double synchro'd 5th as well. Mine was built by shep and now grinds 5th every 5 shifts or so...seems like the synchro is missing a couple teeth. I dunno just getting it built stronger and better.
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Dec 1, 2008, 06:52 PM
#8
Now the Evo 9 5th gear is shorter then the Evo 8th 5th gear. They had to shorten it since they shortened the evo 9 4th gear. Thus the Evo 8 should technically be better for fuel economy but I'm not doing it for that reason. The Evo 9 5th is only good for 160 @ 7300ish rpms while the Evo 8th will be doing about 171ish.
Dec 1, 2008, 06:58 PM
#9
....I know this your not telling me anything I don't know already.
Now the Evo 9 5th gear is shorter then the Evo 8th 5th gear. They had to shorten it since they shortened the evo 9 4th gear. Thus the Evo 8 should technically be better for fuel economy but I'm not doing it for that reason. The Evo 9 5th is only good for 160 @ 7300ish rpms while the Evo 8th will be doing about 171ish.
Now the Evo 9 5th gear is shorter then the Evo 8th 5th gear. They had to shorten it since they shortened the evo 9 4th gear. Thus the Evo 8 should technically be better for fuel economy but I'm not doing it for that reason. The Evo 9 5th is only good for 160 @ 7300ish rpms while the Evo 8th will be doing about 171ish.
...jk lol
