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Which diff should i get? 

 

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 Post subject: Which diff should i get?
Posted: Fri Jun 08, 2007 10:59 am 
Getting Side Ways
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Hey guys, just after some info and past experiences with different diffs.

Looking at a 3.7 ratio but my mate reckon it may be too droney with zorst and auto.. so if anyone has a E series with 3.7 headers and exhaust if they can give me feed back on how it drives on highways, would be great. I daily get up to 100kmh but thats only for bout 3-4mins so not to fussed.

Im still tossing up between 3.7 and 3.45. Im guessing 3.45 will be cheaper and more common because the Fairmonts had them factory correct?

Any feedback would be awsome.

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Posted: Fri Jun 08, 2007 11:13 am 
Getting Side Ways
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Ride: 07 BF mk2 E-gas wagon + eb 5.0

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i've got 3.9's in my 5L. 3" zorst and extractors with 1 muffler. revs at about 2500 (guessing as no tacho) at 100kph. drove it home form sydney where i bought it and it was o.k. but it had a hotdog reso on it then as well which i reckon made it more droney than without.

car is a daily and is not too bad. at least my engine note is something i can listen to all day everyday. not sure how it would be on a 6.

3.45's can be had from a wrecker for about 4-500 disc to disc. maybe even cheaper.

 

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Posted: Fri Jun 08, 2007 11:15 am 
Getting Side Ways
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Awsome.. i reckon i may just go with the 3.45s disc to disc so then it'll just bolt right up..

my zorst has no resi but i think that the hotdog would have made ur trip a little louder
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Posted: Fri Jun 08, 2007 1:43 pm 
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Go 3.7's. I have 3.45s, mate has 3.7s. Little to no difference in noise/rpms. Performance wise, it will make a lot bigger difference. If you have 3.23s, 3.45s will be a waste of time.

 

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Posted: Fri Jun 08, 2007 2:05 pm 
Getting Side Ways
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Age: 40

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Joined: 31st Jan 2005

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Ride: 07 BF mk2 E-gas wagon + eb 5.0

Power: 174 rwkw

Location: Adelaide
SA, Australia

ef falcon 6 would have 3.08 diff. i agree though. 3.45's is still a long 1st gear.

 

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eb v8: low loud and fast. just how a v8 should be. i guess the big question is, is it fast enough...

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