G'day Fellow Members,
Have a 9 inch in my LX with 3.0 to 1. Thinking of changing the ratio. 50% of my driving is highway & the other 50% street. Was considering a 3.5 to 1 as this will give me more acceleration off the mark but only increase my rpm's by about 300 when doing 100 on the highway. A happy medium I reckon.
What do you think?
Which ratio?
Started by
_hux454_
, Jun 01 2006 08:35 PM
6 replies to this topic
#2
makka
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A m��se once bit my sister
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Posted 01 June 2006 - 10:24 PM
something between 3.25 and 3.5 would be nice. thats probably whats going in my car, but i suppose mine hardly sees the highway anymore, anyone got a set of 4.44's for a sailsbury?lol
#3
_LH SL/R 5000_
_LH SL/R 5000_
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Posted 01 June 2006 - 11:04 PM
I used to have 3.5 : 1 in my old 9", with 245/50 14's the car would do 3000 Rpm @ 100 kph. Great acceleration but I wouldn't want to have to drive on a Hwy for too long at one time.
#4
LXCHEV
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Lotsa Posts!
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Posted 01 June 2006 - 11:47 PM
If you do 50% of your driving on the highway I would not change it! Maybe 3.25. Depends how much you want that acceleration! I've found 3.5's are definitely a very happy medium though, if you're not overly concerned with your fuel bill, then go for 3.5's for sure. It will still sit on the highway at ok revs. It's all a compromise.
The next car I build is gonna cop 3.7's or 3.9's, but with either a T700 (gimme over-drive), or a 5 speed man-well. The way fuel prices are going these days, these type of issues are starting to matter more and more.
The next car I build is gonna cop 3.7's or 3.9's, but with either a T700 (gimme over-drive), or a 5 speed man-well. The way fuel prices are going these days, these type of issues are starting to matter more and more.
#5
antelopeslr5000
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Posted 02 June 2006 - 08:30 AM
Totally agree with LXCHEV.
I had a 2.75 diff with the M21 but changed that to a 3.9 diff when the T56 was fitted. Install a gearbox with an over-drive and you can have the best of both worlds.
I had a 2.75 diff with the M21 but changed that to a 3.9 diff when the T56 was fitted. Install a gearbox with an over-drive and you can have the best of both worlds.
#6
_wasted_youth_
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Posted 04 June 2006 - 07:20 AM
yeah i got 3.9s in my monaro and it screams nicely but not as bad as when it had 4.11. im surprised just how much difference it made
#7
kudu
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Posted 04 June 2006 - 07:33 AM
I had 3.5's in the 9"in my LX and i found them to be good. I didn't think it was to bad on the highway and the acceleration was certainly on the fun side.
Edited by kudu, 04 June 2006 - 07:34 AM.
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