What gear should I run????

[Jking8]

This is my first post I'm hoping that I can meet some guys on here that can help me out this is my first project and I have a lot of questions haha first off I have a 1978 f100 I went with a 1995 cobra 5.0 nothing to fancy gt40 heads,e303 cam demon 650 carb, edelbrock performer rpm intake MSD ignition shorty headers and a world class Borg Warner t5 trans. And I lowered the truck 4" and now I'm trying to decide on what gear I should run. I want to drive it on the street but i want the best all around gear for this application in this truck... Please help.

 

[BuzzGun79]

3.73 Is what i would go with...Good for street or strip...had it in my former 5.0 Mustang with the same cam and carb & as your running...My Heads were Elderbrock Rpm type...

 

[smokey]

I agree with buzz on the 3.73 .

 

[Jking8]

Thanks... Another question, the truck was an automatic before. I put a Howe 3/4 bore master cylinder in and installed an aluminum willwood clutch pedal out of a race car. But I still need a hydraulic throw out bearing for a t5 trans. Most applications using the hydraulic clutches that I know of are circle track cars and most of them are running 3 and 4 speed Saginaw trans so there aren't a lot of company that make a "ford" hydraulic throw out bearing. Not cheap anyways. Does anyone know of a company that's sales them? Other than "ram" or "McLeod".

 

[5.0Flareside]

4.10s if running a 28+" tire and don't get on interstate much..

Don't fear the gear lol..

 

[O'Rattlecan]

My first quetion was "How big are your tires?" and my second question was "What kind of driving are you doing?" The purpose of the vehicle (daily drive or just a friday cruiser) will make a difference.

Ryan

 

[Beach66Bum]

3.73's would be my choice.

 

[DNFXDLI]

What you need to do it run the numbers in a calculator...


http://www.csgnetwork.com/multirpmcalc.html

Then you can see where all your operating rpms are at...guessing, IMO is dicey at best given the cost/work of doing a gear swap.

 

[SuperCab]

^^^ This... Decide your cruising speed and target rpm... That will dictate your axle ratio choice

 

[Jking8]

Thanks the calculator really helped. I Purpose wise, just a weekend hot rod I'm not planning on getting on the highway with it.