Sell me on gears
4/11/05, 05:49 PM
#1
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I have been thinking about going with 4.10 gears. How do they affect gas mileage and RPM's at say 60 and 80 mph. I do 60 miles of highway driving each day. Also, which brand is the best and where can I find the best price?
4/11/05, 09:44 PM
#2
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Jason, IMHO, I wouldn't go with 4.10's if I did a lot of highway driving.
If my car was an everyday freeway driver, I might consider going with 3.73's and keep a spare set of rims with lower diameter tires for goofing off and racing. The 3.55's that come with the manuals are fairly low and give good performance. If changing out gears I would (and did) buy from Ford Racing.
Paul
If my car was an everyday freeway driver, I might consider going with 3.73's and keep a spare set of rims with lower diameter tires for goofing off and racing. The 3.55's that come with the manuals are fairly low and give good performance. If changing out gears I would (and did) buy from Ford Racing.
Paul
4/12/05, 03:19 PM
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500 rpms isn't too bad, I can live with it. I really don't care too much about fuel economy, rather I don't want my car to be too loud in case I am on the cell phone for business purposes. I think I am going to try it out.
4/12/05, 03:22 PM
#7
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I have to agree with Porsche here. I have Ford Racing 4.10's. It is a minimal difference in MPG. If I had it to do over again, I'd go with 4.30's. The 4.10's feel awesome! I can only imagine what the 4.30's would feel like.
4/12/05, 03:57 PM
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In 5th at 80mph, about 3000 rpm if I recall correctly. I don't think 3.73's would be that noticeable at all.
4/12/05, 04:29 PM
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4/13/05, 06:10 AM
#13
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try www.buyfordmotorsport.com or www.gefracing.com. I ordered 3.73 from Gefracing for my 95gt vert. believe I paid around $135 for the set. great service. remember to get the special gear additive. A word of advice, not a simple job, hope your friend is a good mechanic, It only cost me about 200 for install at the local performance shop to have mine gears installed, something to consider.
Gears are definitely a great mod! Good Luck!
Sam
Gears are definitely a great mod! Good Luck!
Sam
4/13/05, 04:41 PM
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Originally posted by Rampant@April 12, 2005, 1:46 PM
So, with the 4.10s, what RPM are you at (in 5th on the MT) doing 75mph or so?
And, would the 3.73's make a noticeable difference?
So, with the 4.10s, what RPM are you at (in 5th on the MT) doing 75mph or so?
And, would the 3.73's make a noticeable difference?
3.55 revs are 2400 at 80 mph.
Edit: according to the calculator (using stock 235/55-17 tires):
Gear 60 mph 70 mph 80 mph
3.55 1800 2100 2400
4.10 2100 2400 2800
4/13/05, 07:09 PM
#15
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Originally posted by max2000jp@April 12, 2005, 5:33 PM
Anyone know where I can find the best deal on a FRPP 4.10 Gear? I have a friend whom said he would help me install it for some beer.
Anyone know where I can find the best deal on a FRPP 4.10 Gear? I have a friend whom said he would help me install it for some beer.
Like Sam said, it ain't a piece of cake.
4/13/05, 07:37 PM
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4/13/05, 09:04 PM
#17
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Originally posted by Clem@April 13, 2005, 8:12 PM
I would probably hold off on those beers until after the install. Like Sam said, it ain't a piece of cake.
I would probably hold off on those beers until after the install.
Like Sam said, it ain't a piece of cake.
4/13/05, 09:15 PM
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Originally posted by fin1@April 12, 2005, 2:32 PM
http://www.f-body.org/gears/
1st: 3.38
2nd: 2.0
3rd: 1.32
4th: 1.0
5th: .67
http://www.f-body.org/gears/
1st: 3.38
2nd: 2.0
3rd: 1.32
4th: 1.0
5th: .67
Upon further investigation, I see Tremec has 3 other 3650 5 speed transmissions which have an overdrive of .62. If I plop that into that marvelous calculator at f-body.org, RPMs at 80 MPH are back down to 2500 with 4.10 gears versus 2400 RPM at 80 mph with 3.55 and .68 overdrive. That would work for me!
Or a T56 6-speed with .75 and .5 5th and 6th overdrive: with 4.30 gears, rpm is only 2K at 75 mph in 6th gear!!
Does anyone know which one of these the '05 GT actually has in it?
TR-3650 TCET1265 3.38 2.00 1.32 1.00 0.68
TR-3650-1 TCET2070 3.38 2.00 1.32 1.00 0.68
TR-3650-2 TCET1858 3.38 2.00 1.32 1.00 0.68
TR-3650-3 TCET1789 3.38 2.00 1.32 1.00 0.62
TR-3650-4 TCET1903 3.38 2.00 1.32 1.00 0.62
TR-3650-5 TCET1925 3.38 2.00 1.32 1.00 0.62
TR-3650-6 TCET1986 3.38 2.00 1.32 1.00 0.74
TR-3650 TCET5852 3.38 2.00 1.32 1.00 0.68
4/13/05, 09:54 PM
#20
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Originally posted by acadian@April 13, 2005, 7:48 PM
ANyone with an auto put 4.30 gears in? What is everyone's thoughts on that? Is it best to put 4.10's in the auto?
ANyone with an auto put 4.30 gears in? What is everyone's thoughts on that? Is it best to put 4.10's in the auto?
Here are some speeds and rpm's with each:
RPM 3.90 4.10 4.30
2000 58 56 53
2100 61 58 56
2200 64 61 58
2300 67 64 61
2400 70 67 64
2500 73 69 66
2600 76 72 69
2700 79 75 72
2800 82 78 74
2900 85 81 77
3000 88 83 79
3100 91 86 82
3200 93 89 85
3300 96 92 87
3400 99 94 90
3500 102 97 93