This is topic 4.10 Gears in forum Tech Talk at Northern California Ford Owners  .


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Posted by STaNGAHOLIC (Member # 1459) on :
 
Hey i'm about to install some 4.10's in my cobra...Anyone know how much gasmilage i should expect it to drop to? just curious....gettin bout 260 on a full tank right now
 
Posted by jmir018 (Member # 1414) on :
 
i dont know about gas..but i can tell you that you'll hit 83mph at 3k rpm. hope that helps.
 
Posted by bunchmyfunky (Member # 360) on :
 
I don't know the exact amount it is. But with a full tank of gas from my house in vacaville to san jose and back home I would have just over half a tank. With the 4.10s I'm just under half a tank.
 
Posted by jmir018 (Member # 1414) on :
 
ok...i am confused...how can you save gas if your engine is reving higher?
 
Posted by bunchmyfunky (Member # 360) on :
 
Sorry my post is a little confusing. See if this one helps [Wink] My round trip (with 3.27s) when I got home would be just over half a tank left in the car. With the 4.10s round trip I have just under half a tank left. I would say I'm using 1/8+ more gas with the 4.10s
 
Posted by 00KNIGHTMARE (Member # 1010) on :
 
quote:
Originally posted by bunchmyfunky:
I don't know the exact amount it is. But with a full tank of gas from my house in vacaville to san jose and back home I would have just over half a tank. With the 4.10s I'm just under half a tank.
when are you taking the car to the track with the 4.10's? just wondering how much they'll improve the 13.4. did the car feel faster with the 4.10's, or slower cause of less traction?
 
Posted by bunchmyfunky (Member # 360) on :
 
The car definatly feels a lot faster. I did go to the track last Friday. But didn't run very well. It was 105 and I don't think it dropped below 90 the whole night. The best I ran and this was hot lapping the car was a couple of 13.5s and a bunch of 13.6s My driving was way off (bad shifting and missing gears) My 60fts were a consistant low 1.9s and that was feathering the gas because of wheel spin. I expect the car to run low 13s to high 12s with good driving and weather.
 
Posted by jmir018 (Member # 1414) on :
 
quote:
Originally posted by bunchmyfunky:
Sorry my post is a little confusing. See if this one helps [Wink] My round trip (with 3.27s) when I got home would be just over half a tank left in the car. With the 4.10s round trip I have just under half a tank left. I would say I'm using 1/8+ more gas with the 4.10s
thanks..thats makes a bit mroe sence
 
Posted by POONSTANG (Member # 79) on :
 
quote:
Originally posted by STaNGAHOLIC:
Hey i'm about to install some 4.10's in my cobra...Anyone know how much gasmilage i should expect it to drop to? just curious....gettin bout 260 on a full tank right now
Not that much of a difference...if you keep the foot "out of it" then you can still get 250 out of a tank...I can on mine and I have the FMS 4.10's... [Big Grin]
 
Posted by y2kgt01 (Member # 1257) on :
 
mmmm, all this gear talk, cant wait for my new 3.90's. [Big Grin] they are on the way from houston,ill let you guys know how i like them and my new times once they are in, for an 01 gt
 
Posted by STaNGAHOLIC (Member # 1459) on :
 
How much did you guys pay for install... Lotta ppl are chargin more cuz of the IRS rear end...
 
Posted by Mike22ca (Member # 1675) on :
 
This is gonna sound weird...but I have a V6 with 4.10's & Posi and I actually gained mileage. I wind that bad boy all the way up to 5500 rpms too!

Mike
 
Posted by 3xblackGT (Member # 1185) on :
 
who cares about gas when you got a V8....buy a integra 4dr if you wanna save gas....(little inside joke) [Razz]
 
Posted by 3xblackGT (Member # 1185) on :
 
who cares about gas when you got a V8....buy a integra 4dr if you wanna save gas....(little inside joke) [Razz]
 
Posted by CANTCME (Member # 525) on :
 
quote:
Originally posted by bunchmyfunky:
The best I ran and this was hot lapping the car was a couple of 13.5s and a bunch of 13.6s My driving was way off (bad shifting and missing gears)
What were you trapping at?
 
Posted by bunchmyfunky (Member # 360) on :
 
I have to find the timeslips but I had a few mid 102s
 




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