gearing advice - FSB Forums
 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 11-30-2012, 04:19 PM Thread Starter
Registered User
 
task1's Avatar
 
Join Date: Mar 2005
Location: el paso tx
Posts: 144
Bronco Info: '79 400m 0.30 over comp cam edelbrock intake/carb double exhaust 4in lift 33in bfgs
gearing advice

Hey guys looking for some advice. I have a 79 bronco with a 400 0.30 over edelbrock alum intake, comp cam, howell tbi, detroit on back running 33 tires.
I dont think truck is underpowered. I mostly run sand dunes and on long hill climbs truck maxs out would regearing help out any????

On highway it does approx 2-2300RPM at 60mph
task1 is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 11-30-2012, 05:22 PM
Registered User
 
JBfab's Avatar
 
Join Date: Oct 2010
Location: Slatington, PA
Posts: 2,646
Bronco Info: 94 C150 prerunner 351/zf/maf. To many mods to list.
What is your current gear ratio?

It's not custom if you bought it from a catalog!
Visit my build thread- http://www.fullsizebronco.com/forum/...d.php?t=211825
JBfab is offline  
post #3 of 6 (permalink) Old 11-30-2012, 05:34 PM
TTB for short
 
/==0=\'s Avatar
 
Join Date: Nov 2003
Location: The House that Peter Bilt
Posts: 2,211
Bronco Info: '95 L,'93 Bronc,'96 Turbo Dizzle
Whats the rpm range on the cam and intake? That will be the major factor...

Charity is injurious unless it helps the recipient to become independent of it.
John D. Rockefeller
/==0=\ is offline  
post #4 of 6 (permalink) Old 11-30-2012, 10:32 PM Thread Starter
Registered User
 
task1's Avatar
 
Join Date: Mar 2005
Location: el paso tx
Posts: 144
Bronco Info: '79 400m 0.30 over comp cam edelbrock intake/carb double exhaust 4in lift 33in bfgs
Im running stock gears 3.5? Forgot to mention that in 4 hi it feels likevit wont even move so always wheel in 4 lo
task1 is offline  
post #5 of 6 (permalink) Old 12-01-2012, 04:26 AM
Driving Stuff Henry Built
 
El Kabong's Avatar
 
Join Date: Oct 2006
Location: Pasadena, CA
Posts: 5,943
Bronco Info: -90 xlt, 351w, e4od, 3.55:1, sag, warn hubs, trans cooler, 35" bfg m/t, -73, 400, np435, 35s
Sure, lower gears would give you more torque to the wheels. The trade off is higher revs on the highway, but your truck would probably appreciate it on the hills. 33's are larger than stock, so you currently have less torque to the wheels than it started out with.

Here's a good Gear Ratio Calculator. Plug in your current info on one side, & your new combo on the other, then hit Calculate on each to see what effect the changes will have.

Baba Looey's Favorite FSB Links........................Common Replies to FAQs

“Don't find fault, find a remedy.” -Henry Ford
El Kabong is offline  
post #6 of 6 (permalink) Old 12-01-2012, 12:57 PM
Registered User
 
helirich's Avatar
 
Join Date: Jul 2009
Location: Florida
Posts: 3,271
Bronco Info: 90' 351/E40D 38" tires, 4.88 gears, full float 8.8, lockers F&R
Quote:
Originally Posted by task1 View Post
Hey guys looking for some advice. I have a 79 bronco with a 400 0.30 over edelbrock alum intake, comp cam, howell tbi, detroit on back running 33 tires.
I dont think truck is underpowered. I mostly run sand dunes and on long hill climbs truck maxs out would regearing help out any????

On highway it does approx 2-2300RPM at 60mph
When you say maxs out, what do you mean?
1. Does it bog down and down shift.

2. Or do you mean that you are spinning the wheels as fast as you can in 3rd gear-low range and want more wheel speed?

If 1, (hard to believe in low range) keep it in 2nd.

If 2, get bigger tires.

I think your gears are OK.
helirich is offline  
Reply

  FSB Forums > Bronco Discussions > Noobie Bronco Tech Questions. Flame free zone!

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the FSB Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself. DO NOT USE Gmail.com accounts. If you only have a Gmail.com email please contact the administrator here

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome