best rear end choice??
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Senior User
Joined: Dec 2003
Posts: 479
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best rear end choice??
wut is the best choice for my truck if im gonna be goin down the highway alot andmaybe a few times a month take it down and teach the ricers a lesson?? wut i have seen is a 4.88 dana 70
and also a 4.10 dana 70 limited slip....just on the net,i would realy like to know wut is best for the best gas milage also....thank you all ....
and also a 4.10 dana 70 limited slip....just on the net,i would realy like to know wut is best for the best gas milage also....thank you all ....
Post Fiend
Joined: Sep 2004
Posts: 5,231
Likes: 1
From: Near Fresno, California
You want it such that you are running about 2600 RPM at the speed you normally cruse. The ratios you mentioned are very low, unless you are running very tall tires.
My best for gas mileage is a 3.54 ratio with 29.5 inch dia. tires, however, it is a bit slow off the line.
My best for gas mileage is a 3.54 ratio with 29.5 inch dia. tires, however, it is a bit slow off the line.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Is the truck you are refering to the 72 F100 in your username? A Dana 70 would be found in the one ton F350s, your 1/2 ton F100 has a 9" rear. The 9" is quite adequate for your F100.
Setting up a truck for daily driving and for racing is a different setup. Don't know what engine you are running, but my 352 FE and 3.00 rear will get the job done on the street pretty good.
John
Setting up a truck for daily driving and for racing is a different setup. Don't know what engine you are running, but my 352 FE and 3.00 rear will get the job done on the street pretty good.
John
Post Fiend
Joined: Jun 2002
Posts: 13,873
Likes: 3
From: Atlanta GA
You are not going to teach Ricers any lesson by putting an axle in the rear (Dana 70) that weighes more then their whole drivetrain and you are not going to teach them any lessons on the highway after 50 mph because of the drag of that year truck.
What you run for the rear depends on your engine and transmission.
What you run for the rear depends on your engine and transmission.
Thread Starter
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Senior User
Joined: Dec 2003
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wow,looks like i hit a itch in everyones back.....well....ok....next year i will be getting a job aboot an hours drive from me and when i get that i need a rear end that is set strictly for highway speed.....and mine doest have a 9", assumption is never good....
till then i am fine with wut i have,but i have to be prepaired....i have a 289/302 frank. ....in mine,with a c4,so ya.....thx so far....
p.s. with the rear end i have now,on the quarter mile i have beat ALL the ricers i have come up against,so,once again,assumming is never good.....
till then i am fine with wut i have,but i have to be prepaired....i have a 289/302 frank. ....in mine,with a c4,so ya.....thx so far....
p.s. with the rear end i have now,on the quarter mile i have beat ALL the ricers i have come up against,so,once again,assumming is never good.....
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
72, I can't see your truck, and don't know what you skill level is for IDing parts. Your question "best rear end choice??" led me to believe that you wanted help.
Was I wrong?
John
Was I wrong?
John
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Thread Starter
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Senior User
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yes i still want help,but wut i must know is is wut is the best rear end for highway speed driving?
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Posting Guru
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From: nevada
stock rice
You must be racing some anemic (stock) ricers, a lot of the ones that hit the track out here are pushing some serious hp. I once had a built 396/turbo 400 in a '57 Chev pickup that would raise some eyebrows in those little cars, but that was before the explosion of big money rice power. (Ok I sold it and bought a Ford.)
Thread Starter
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Senior User
Joined: Dec 2003
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well,here there are alot of high money ricers that i race,my 289 kicks all their butts,even with their NOS and turbo's and super chargers.....i used to own an s10 that i put a 350(stock internals,just pretty looking)and with a 5 speed and still kicked all their butts,so it must be dumb luck,lol,idk,or they are bad racers or im good,either way i win almost every time....
Post Fiend
Joined: Jun 2002
Posts: 13,873
Likes: 3
From: Atlanta GA
With a 302/c-4 the best all around for highway and off the line would be a Ford 9 " with 3.54 (widely available) with 31 tires (29.5 actual) and a 2400 rpm on the highway at 60 mph. 4.10s would give very good kick off the line, but, put you at 2800 at 60 mph which would wind the 302 up too much since 2200 is a good target on a 302.
http://www.4lo.com/
http://www.4lo.com/
