This is topic 3.73 or 4.10 in forum Tech Talk at Northern California Ford Owners .
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Posted by saclve (Member # 13280) on
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Can not decide if I want 4.10 gears or 3.73 need help deciding before I place the order on am.com , its a 98 gt vert 5speed . Gettin pi cam and intake swap already have cai and offroad xpipe. Not much of a hwy driver mostly street driving and once a month street legal wWednesday drag racing ?? Help me out
Posted by Tom Renzo (Member # 13165) on
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5 Speeder 3.73 Auto 4.10 just me.
Posted by saclve (Member # 13280) on
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quote:
Originally posted by Tom Renzo:
5 Speeder 3.73 Auto 4.10 just me.
Will there be a big diff over stock gears compared to 3.73 ? What about performance diff between 4.10 vs 3.73
Posted by SwEeT03Gt (Member # 10283) on
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cant decide go 3.90
Posted by saclve (Member # 13280) on
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You think American muscle is best place to order gear set for $260
Posted by Tom Renzo (Member # 13165) on
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Randy has a good selection of gears but as far as i know they do not offer it in 3.9 for the 8.8. But i have been using his stuff for many years. Not sure if ford motorsport offers a 3.9. If memory serves they do not. Yucon does not also. But many aftermarket gear suppliers do.
What is your final drive ratio NOW!!! Performance increase will be determined by the gear set you now have(RATIO PLEASE)
[ 2014-01-25, 07:36 PM: Message edited by: Tom Renzo ]
Posted by saclve (Member # 13280) on
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Who is randy??
Posted by Tom Renzo (Member # 13165) on
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Here you go
http://www.ringpinion.com/
Posted by saclve (Member # 13280) on
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Ok thanks
Posted by saclve (Member # 13280) on
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Silly question but what type of rear end is in the 98 mustang gt. 8.8 what spline
Posted by SwEeT03Gt (Member # 10283) on
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Yukon offers 3.90 on American muscle
Posted by Tom Renzo (Member # 13165) on
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I am sure they do offer the 3.9 final but as far as i know Randy does not offer them for the 8.8.Just a talking point that is all. With a 5 speeder the 4.1-3.9 is a bit steep for a not so high revving ford engine. just me. The 3.7 is a better choice in my opinion. But then again the extreamly low torque of the 302 does present a little bit of an issue on final drive selections??
[ 2014-01-25, 08:17 PM: Message edited by: Tom Renzo ]
Posted by red5o (Member # 12651) on
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Dude go 3:73 you won't regret it
Posted by 70stang351w (Member # 9948) on
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quote:
Originally posted by saclve:
Silly question but what type of rear end is in the 98 mustang gt. 8.8 what spline
Stock is 28spline
Posted by Tom Renzo (Member # 13165) on
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The spline count has nothing to do with a change out of the ring & pinion. It only maters when changing carriers or axles.
Posted by saclve (Member # 13280) on
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quote:
Originally posted by Tom Renzo:
The spline count has nothing to do with a change out of the ring & pinion. It only maters when changing carriers or axles.
I was asking bcus the parts page at one site requires all that info but im just going to stick with qmerican muscle
Posted by SwEeT03Gt (Member # 10283) on
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quote:
Originally posted by red5o:
Dude go 3:73 you won't regret it
I went 3.73 I regretted it wish I would of gone 4.10's
Posted by saclve (Member # 13280) on
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quote:
Originally posted by SwEeT03Gt:
quote:
Originally posted by red5o:
Dude go 3:73 you won't regret it
I went 3.73 I regretted it wish I would of gone 4.10's
What made you want 4.10 and what car was that in ??
Posted by 86hatchkid (Member # 10698) on
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I got 410s in my 01 bullitt and I love them I drive mines everyday 70 miles I'm always at 2 1/2 rpms on the freeway. I sometimes think about upgrading to bigger gears tho the 410 just ain't enough sometimes lol
Edit: Don't fear the gear ![[Wink]](wink.gif)
[ 2014-01-26, 01:01 PM: Message edited by: 86hatchkid ]
Posted by FiveOhChuck (Member # 12588) on
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4:10's FTW!
Posted by Tom Renzo (Member # 13165) on
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At 65 MPH T5 28 inch tire here is the difference
2250 RPM’s 3.73
2350 RPM’S 4.10
APP 100 RPM at 65 MPH
AUTO TRANNY at 65 MPH
2000 RPM’s 3.73
2300 RPM’s 4.10
300 RPM difference
Now you can decide accordingly.
[ 2014-01-26, 04:22 PM: Message edited by: Tom Renzo ]
Posted by red5o (Member # 12651) on
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quote:
Originally posted by SwEeT03Gt:
quote:
Originally posted by red5o:
Dude go 3:73 you won't regret it
I went 3.73 I regretted it wish I would of gone 4.10's
Well what ever floats your bout I had them in my 93 vert 5 spd I was launching real quick
Posted by saclve (Member # 13280) on
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Ok im just getting 4.10s for my t45 I'm not worried about hwy mpg mostly street drivin and monthly track visits
Posted by saclve (Member # 13280) on
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You guys think a bfg comp 2 or nitto 555 in 275/40r17 will handle launches with 4.10s and 230whp 270lbft (estimated power ) I just keep hearing ppl say it will magnify traction issues but only traction issue I have is if I launch at 3k rpm
Posted by 98 ROUSH (Member # 10309) on
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Had both 3.73 and 4.10s on my old pi swap set up go with 4.10s trust me. Faster and not that much difference on the hwy.
Posted by 98 ROUSH (Member # 10309) on
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quote:
Originally posted by saclve:
You guys think a bfg comp 2 or nitto 555 in 275/40r17 will handle launches with 4.10s and 230whp 270lbft (estimated power ) I just keep hearing ppl say it will magnify traction issues but only traction issue I have is if I launch at 3k rpm
You'll be fine with that hp
Posted by SwEeT03Gt (Member # 10283) on
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quote:
Originally posted by red5o:
quote:
Originally posted by SwEeT03Gt:
quote:
Originally posted by red5o:
Dude go 3:73 you won't regret it
I went 3.73 I regretted it wish I would of gone 4.10's
Well what ever floats your bout I had them in my 93 vert 5 spd I was launching real quick
different transmissions, so it'll be night n day between my 03 tr3650 n your 93 t5 (im guessing).
Posted by red5o (Member # 12651) on
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quote:
Originally posted by SwEeT03Gt:
quote:
Originally posted by red5o:
quote:
Originally posted by SwEeT03Gt:
quote:
Originally posted by red5o:
Dude go 3:73 you won't regret it
I went 3.73 I regretted it wish I would of gone 4.10's
Well what ever floats your bout I had them in my 93 vert 5 spd I was launching real quick
different transmissions, so it'll be night n day between my 03 tr3650 n your 93 t5 (im guessing).
Yea Probly
Posted by nitrous_bob (Member # 77) on
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ALWAYS 4.10 unless you have twin turbo or something else that lets you take advantage of the lower rpms. otherwise you want to get the rpms up as quick as possible
you WILL cut more ET with 4.10's
you WILL NOT notice a difference in MPG
your rpma will be about 250 higher with the 4.4.10's than with 3.73's
you WILL NOT have to shift into 5th in the 1/4 mile
you WILL NOT tach 3000 doing 55, more like 3000 doing 75-80 based on tire size
dont fear the gear
Posted by saclve (Member # 13280) on
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quote:
Originally posted by nitrous_bob:
ALWAYS 4.10 unless you have twin turbo or something else that lets you take advantage of the lower rpms. otherwise you want to get the rpms up as quick as possible
you WILL cut more ET with 4.10's
you WILL NOT notice a difference in MPG
your rpma will be about 250 higher with the 4.4.10's than with 3.73's
you WILL NOT have to shift into 5th in the 1/4 mile
you WILL NOT tach 3000 doing 55, more like 3000 doing 75-80 based on tire size
dont fear the gear
Im just waiting to get everything installed at this point . Not worried much about hwy driving both my jobs are street commutes and anything thats going to help me get into the 13's with just pi cam/intake swap and good set of rubber . If 4.10 offer more joy to the driving experience than 3.73 im all for it snd im staying n/a maybe ported heads and comp cam later in the year
Posted by saclve (Member # 13280) on
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Delete
[ 2014-02-04, 07:39 PM: Message edited by: saclve ]
Posted by saclve (Member # 13280) on
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What difference will tire size make ??? How tall tire is
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