Brought to you in part by:

.


Shop Eastwood for all your Auto Restoration Needs!

  Mustangsandmore Forums
  Ford Racing
  Tires and gears ? Kinda long

Post New Topic  Post A Reply
profile | register | preferences | faq | search

UBBFriend: Email This Page to Someone! next newest topic | next oldest topic
Author Topic:   Tires and gears ? Kinda long
Fastymz
Moderator

Posts: 14201
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 03-02-2003 06:11 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
I've been thinking about this and I can't find information on it.

Which way is better for a street/strip car.
4.11 gears and tall tire or 3.55 gears and a shorter tire.
I keep reading that if the gears are to big go with a taller tire to help keep the rpms down on the highway.But doesn't that also change the over all ratio?
Take my car with stock heads.I dont want to go over 5000rpm at the end of 1/4 mile.
But if I go to 3.80 gears I'd have to go to taller tires too.But at that point would I be any better off then running my 3.40 gears and short tires?,would I run any quicker one way or the other.

This question is just about my car.I'm just trying to understand the relationship between tire size and gears.

------------------
SCOOP
oddly obsessed with big scoops on little Mustangs

2.26 60'S
14.9 @ 90.86MPH

65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede.

https://mustangsandmore.com/ubb/Fastymz.html

IP: Logged

Dubz
Gearhead

Posts: 1048
From: Manitoba Canada
Registered: Oct 2002

posted 03-02-2003 06:15 PM     Click Here to See the Profile for Dubz   Click Here to Email Dubz     Edit/Delete Message   Reply w/Quote
my opinion

shorter tires = less rotational weight
less rotational weight = faster times
faster times = a happy scoop :P

IP: Logged

james306
Journeyman

Posts: 82
From: falmouth,me,usa
Registered: Feb 2003

posted 03-02-2003 07:13 PM     Click Here to See the Profile for james306   Click Here to Email james306     Edit/Delete Message   Reply w/Quote
the short tire tall gear will give the same final ratio of a tall tire short gear as long as they were matched properely. i would go with short tire tall gear for two reasons. #1 everything DUBZ said. #2 you can run short slicks at the track for the extra ratio it will give you then you can run taller street tires for MPG and street ability. just be sure to calibrate your speedometer for the taller street tires.

IP: Logged

Fstln69
Gearhead

Posts: 355
From: Westmont,il
Registered: Jan 2003

posted 03-02-2003 07:21 PM     Click Here to See the Profile for Fstln69   Click Here to Email Fstln69     Edit/Delete Message   Reply w/Quote
We run a 275 60-15 with a 4.10 on the street and a 26" slick on the track seems to work good,ain't like were going to florida in the car....

------------------
69 fairlane 351w [email protected] before M&M.. after??
always in search of more HP and faster ET'S

Fstln69 Pics Page

IP: Logged

Butch Jennings
Gearhead

Posts: 611
From: No. California
Registered: Apr 2000

posted 03-02-2003 07:33 PM     Click Here to See the Profile for Butch Jennings   Click Here to Email Butch Jennings     Edit/Delete Message   Reply w/Quote

I've always looked at it the opposite of you guys. A taller tire has a bigger footprint than a shorter tire. A taller tire also has less rolling resistance than a shorter tire. A taller tire will slow down the bearing speeds (a big deal guys) compared to a shorter tire. A shorter gear (3.80) has a better mechanical "leverage" than a taller gear (3.40). I don't think the weight difference is even a factor when you look at the upside of the taller tire, I've always tried to run the tallest tire I can on my car.

------------------
Butch
460 powered 1967 Comet Cyclone (Broken)
10.271 @ 130.231
Butcher's Home Page
"Friends don't let friends drive Chevys"

IP: Logged

Fastymz
Moderator

Posts: 14201
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 03-02-2003 07:36 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
This is the kinda of info I was looking for.
Butch I was thinking that a 3.80 would still work better off the line.

PS. hows the mustang project coming along.Do you think you'll be racing this summer.

------------------
SCOOP
oddly obsessed with big scoops on little Mustangs

2.26 60'S
14.9 @ 90.86MPH

65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede.

https://mustangsandmore.com/ubb/Fastymz.html

IP: Logged

Moneymaker
Administrator

Posts: 21725
From: Lyons, IL, USA
Registered: May 99

posted 03-02-2003 08:13 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
3.40's are girlyman gears.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

IP: Logged

Fastymz
Moderator

Posts: 14201
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 03-02-2003 08:17 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
I know but they were at the right price $70 including the trac loc.
What gears would you run with my weak old motor.

------------------
SCOOP
oddly obsessed with big scoops on little Mustangs

2.26 60'S
14.9 @ 90.86MPH

65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede.

https://mustangsandmore.com/ubb/Fastymz.html

IP: Logged

Trailer_Trash
Gearhead

Posts: 428
From: Alpharetta, Ga, US
Registered: Jan 2003

posted 03-02-2003 09:08 PM     Click Here to See the Profile for Trailer_Trash   Click Here to Email Trailer_Trash     Edit/Delete Message   Reply w/Quote
it makes me sad to hear people refer to their motors as "weak and old"
i like people saying they have "strong and young motors" it sounds less depressing

IP: Logged

Trailer_Trash
Gearhead

Posts: 428
From: Alpharetta, Ga, US
Registered: Jan 2003

posted 03-02-2003 09:12 PM     Click Here to See the Profile for Trailer_Trash   Click Here to Email Trailer_Trash     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Butch Jennings:
[b]I've always looked at it the opposite of you guys. A taller tire has a bigger footprint than a shorter tire.b]

traction-wise, you could make up for the smaller footprint of a smaller tire by getting a wide small tire.

IP: Logged

Butch Jennings
Gearhead

Posts: 611
From: No. California
Registered: Apr 2000

posted 03-02-2003 10:01 PM     Click Here to See the Profile for Butch Jennings   Click Here to Email Butch Jennings     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Trailer_Trash:
traction-wise, you could make up for the smaller footprint of a smaller tire by getting a wide small tire.


Sure I could, but why would I do that after having told you why I prefer a taller tire? Ask Alex why he runs a 9" tire for record and head to head class runs and a 10.5" tire in bracket trim.

------------------
Butch
460 powered 1967 Comet Cyclone (Broken)
10.271 @ 130.231
Butcher's Home Page
"Friends don't let friends drive Chevys"

IP: Logged

Butch Jennings
Gearhead

Posts: 611
From: No. California
Registered: Apr 2000

posted 03-02-2003 10:43 PM     Click Here to See the Profile for Butch Jennings   Click Here to Email Butch Jennings     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Fastymz:

PS. hows the mustang project coming along.Do you think you'll be racing this summer.



The Mustang project's not happening, it's a long story, but I got rid of it. I figure to get the Comet running and sell it, but then today I had a guy call me and tell me he has a buddy who might be interested in it as a roller. So I don't know what's gonna happen, if I get anything together to race this year it will be my Comet, but that kinda depends on what happens with this guy. I've had it "sold" twice now and both times the deal fell through.

------------------
Butch
460 powered 1967 Comet Cyclone (Broken)
10.271 @ 130.231
Butcher's Home Page
"Friends don't let friends drive Chevys"

IP: Logged

Fastymz
Moderator

Posts: 14201
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 03-03-2003 02:05 AM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
Butch sorry to hear that,I hope things are going ok for you.Do you have other plains if the Comet does sale.

------------------
SCOOP
oddly obsessed with big scoops on little Mustangs

2.26 60'S
14.9 @ 90.86MPH

65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede.

https://mustangsandmore.com/ubb/Fastymz.html

IP: Logged

TomP
Gearhead

Posts: 5025
From: Delta BC Canada
Registered: Dec 99

posted 03-04-2003 02:42 AM     Click Here to See the Profile for TomP   Click Here to Email TomP     Edit/Delete Message   Reply w/Quote
a taller tire and the gearing to make it equal to the short tire is a better way to go for the reasons Butch mentions.

IP: Logged

Butch Jennings
Gearhead

Posts: 611
From: No. California
Registered: Apr 2000

posted 03-04-2003 03:42 AM     Click Here to See the Profile for Butch Jennings   Click Here to Email Butch Jennings     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Fastymz:
Butch sorry to hear that,I hope things are going ok for you.Do you have other plains if the Comet does sale.



Thanks Ron,

Things are going well for me, After spending a week in the hospital last year, I'm healthier than I've been in a long time. My family's healthy and I've got a job, the car not running is about the only down side in my life right now. If the Comet sells I'll do another car, not sure exactly what right now, but I'll build something.

------------------
Butch
460 powered 1967 Comet Cyclone (Broken)
10.271 @ 130.231
Butcher's Home Page
"Friends don't let friends drive Chevys"

IP: Logged

'69Stang
Gearhead

Posts: 205
From: Detroit, MI USA
Registered: Jan 2002

posted 03-04-2003 08:50 AM     Click Here to See the Profile for '69Stang   Click Here to Email '69Stang     Edit/Delete Message   Reply w/Quote
Here is a great site for determning RPM's, gear ratios and tire size -
www.randysringandpinion.com/calculators.shtml

IP: Logged

Moneymaker
Administrator

Posts: 21725
From: Lyons, IL, USA
Registered: May 99

posted 03-04-2003 12:23 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Butch Jennings:

I've had it "sold" twice now and both times the deal fell through.



Kinda the way my divorce went down.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

IP: Logged

Mpcoluv
Gearhead

Posts: 1144
From: Charlotte NC usa
Registered: Apr 2001

posted 03-04-2003 01:06 PM     Click Here to See the Profile for Mpcoluv   Click Here to Email Mpcoluv     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Moneymaker:
3.40's are girlyman gears.


Hey!
Statements like that really get my panties in a wad

IP: Logged

Fastymz
Moderator

Posts: 14201
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 03-04-2003 01:53 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Butch Jennings:

Thanks Ron,

Things are going well for me, After spending a week in the hospital last year, I'm healthier than I've been in a long time. My family's healthy and I've got a job, the car not running is about the only down side in my life right now. If the Comet sells I'll do another car, not sure exactly what right now, but I'll build something.


Butch your health is what matters most.Glad to hear all is going good for and your family.Your car will sale it's one of the most cool Comets around.
You could always build a Black 65 Mustang with a big *** scoop,no wait thats already been done.

------------------
SCOOP
oddly obsessed with big scoops on little Mustangs

2.26 60'S
14.9 @ 90.86MPH

65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede.

https://mustangsandmore.com/ubb/Fastymz.html

IP: Logged

Just Strokin
Gearhead

Posts: 754
From: Tuscaloosa, Alabama
Registered: Dec 2001

posted 03-05-2003 09:07 AM     Click Here to See the Profile for Just Strokin   Click Here to Email Just Strokin     Edit/Delete Message   Reply w/Quote
Scoop, How about these for your car?

http://www.quicktimeperformance.com/qtec.htm

------------------
Larry

No fast Fords at this time but one fine cruising 96 F350 CC DRW Power Strokin diesel.
And one rusty 64 Fairlane nick-named the Rust Bucket....And sometimes called the Money Pit...

The sounds of a brain dropping into gear.....
"Buzzzzzz.......Click"

IP: Logged

All times are ET (US)

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply
Hop to:

Contact Us | Mustangsandmore Front Page

Copyright 2004, Steve LaRiviere. All Rights Reserved.


Ultimate Bulletin Board 5.47d

Amazon Honor System Click Here to Pay Learn More

[Build a free Mustangsandmore.ws Home Page!]

[About M&M][Acronyms][Calendar][Chat][Classifieds] [Members' Pics]

[M&M Conventions] [M&M Mug Shots]

[ Mustangsandmore.com Bookstore] [ Smokin' Fords] [Tech Articles]