4.10s INSTALLED!
10-20-2009, 09:19 PM
#15
1st Gear Member
Join Date: Jun 2007
Location: OK
Posts: 132
My husband and I just installed 4.56's in mine. They whine pretty bad. most of the info I find on Richmond gears say that they are bad about whinning. I can def tell a difference on launch at the track. I love them. I was shocked it didn't effect my fuel economy much.
10-20-2009, 09:29 PM
#16
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Join Date: Mar 2007
Location: Deep in the <3 of Tx
Posts: 3,925
Do you not do much highway driving? People always say they lose about 2 to 3 with 4.10's typically. So I'd think 4.56 would lose a bit more than that. Especially with the 5R55S having a lower 5th (o/d). 70mph with stock tire diameter, 5R55S in O/D (.75:1) would run 2962 RPM w/ 4.56. That's ~300 more than 4.10s.
That sure is a big difference than my 2150 RPM @ 70 w/ 3.31s.
That sure is a big difference than my 2150 RPM @ 70 w/ 3.31s.
10-20-2009, 09:45 PM
#17
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Join Date: Feb 2007
Location: Hawaii
Posts: 2,211
congrats man. I've seriously considered those 4.10 gears...but i don't think they'll be very friendly with the blower I want next year
that is kinda high rpm don't you think?
both my Expy with 3.73 and my Bullitt with 3.73 runs about 2000-2100 rpm at 70 mph.
both are about 1800 rpm at 60 mph.
that is kinda high rpm don't you think?
both my Expy with 3.73 and my Bullitt with 3.73 runs about 2000-2100 rpm at 70 mph.
both are about 1800 rpm at 60 mph.
10-20-2009, 09:53 PM
#18
1st Gear Member
Join Date: Jun 2007
Location: OK
Posts: 132
Do you not do much highway driving? People always say they lose about 2 to 3 with 4.10's typically. So I'd think 4.56 would lose a bit more than that. Especially with the 5R55S having a lower 5th (o/d). 70mph with stock tire diameter, 5R55S in O/D (.75:1) would run 2962 RPM w/ 4.56. That's ~300 more than 4.10s.
That sure is a big difference than my 2150 RPM @ 70 w/ 3.31s.
That sure is a big difference than my 2150 RPM @ 70 w/ 3.31s.
I put a taller tire on it. 28", so my RPM at 70 is only 2600 to 2700. still averaging 24 MPG on highway.
10-21-2009, 02:46 AM
#20
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