Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
08-10-2013, 12:37 AM | #1 |
Registered User
Join Date: Jul 2013
Location: Cloquet, MN
Posts: 20
|
Stock 3.73 or 3/4 ton 4.10 axles
I've got some options with parts I have in the barn. Wondering what others think about running half ton with 3.73 gears or a 44 front and 14 BFF rear with 4.10. The only real reason I can think to do a swap is just so I can say "hey look at my 3/4 ton axles". Never going to do any serious off roaring or towing. What have you guys done for axles and why.
Thanks Posted via Mobile Device |
08-10-2013, 08:21 AM | #2 |
Senior Member
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,762
|
Re: Stock 3.73 or 3/4 ton 4.10 axles
JMHO! But, i think it all depends on what size tires you are going to use.....
35s and above might snap an axle on 1/2 ton, 33s seems to be the right combo w/3.73. 4.10s would give you better throttle response off the line. Dont forget, youll need bigger brakes with bigger tires, or go hydro. 15" wheels are hard to fit with one ton brakes
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
08-10-2013, 10:00 AM | #3 |
Registered User
Join Date: Jul 2013
Location: Cloquet, MN
Posts: 20
|
Re: Stock 3.73 or 3/4 ton 4.10 axles
Honestly I'm planning to do a four inch lift and 33's. I'm thinking the k5 will have better highway manners with the 3.73's. and also planning to run an o/d trans so getting the rpms down a little more for that would be good. Thanks for the input, it reaffirmed what I was already kinda leaning towards.
Posted via Mobile Device |
08-10-2013, 04:26 PM | #4 |
Registered User
Join Date: Jul 2013
Location: Floriduh
Posts: 386
|
Re: Stock 3.73 or 3/4 ton 4.10 axles
4:10 is a gas suck! i have a 4.10 on my suburban... every fill up i wish it was a 3.73
at 90 mph i can watch the gauge move at 100mph i bet im getting 7 miles to the gallon at 70 with cruise on flat with wind at my back i can get 17 maybe 18 mpg but in order to tow my boat i needed the 4.10...
__________________
Ed will be known as the Tiger Woods of the integration business |
08-10-2013, 08:35 PM | #5 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,727
|
Re: Stock 3.73 or 3/4 ton 4.10 axles
What transmission and what size tires? Honestly, once you do the 33's and the 4" lift you'll decide they are too small for that much lift IMO and you'll want 35's. And if you stay with the 3.73 you'll want more gear.
With an auto I would do 3.73 if you are going to drive it much on the highway (converter slip) but with a manual, I would do 4.10's on the 35's. Obviously you need to make these decisions before you buy wheels and tires. If you decide to stay with the 1/2 ton axles in the short run, at least move up to 16" wheels. Then if you want to go to the 8 lug axles before the tires are worn out you can at least use them. I own a whole boat load of 15" off-road tires that are too old for using on the highway and won't fit on any of the off-road only vehicles!
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
08-10-2013, 11:47 PM | #6 | |
Registered User
Join Date: Apr 2006
Location: Cookeville, TN
Posts: 274
|
Re: Stock 3.73 or 3/4 ton 4.10 axles
Quote:
Posted via Mobile Device
__________________
1954 Ford F-100 1956 Chevy big window 1970 4x4 Blazer CST 1987 Land Cruiser 1990 Chevy K3500 454 |
|
08-11-2013, 09:30 AM | #7 |
Registered User
Join Date: Jul 2013
Location: Cloquet, MN
Posts: 20
|
Re: Stock 3.73 or 3/4 ton 4.10 axles
Like I said before these are just parts I have on pallets in the barn. Not really looking to buy a Dana 60 just thought since I had the axles already it might be worth it to use them. But I'm leaning towards staying with half tons right now.
Posted via Mobile Device |
08-11-2013, 12:41 PM | #8 | |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,727
|
Re: Stock 3.73 or 3/4 ton 4.10 axles
Quote:
If I had upgraded mine when I broke the first 12 bolt I would have saved a time of money. But I would have missed out on the opportunity to rebuild and repair it over and over and all of the tools and experience that allowed...
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
|
08-11-2013, 03:10 PM | #9 | |
Registered User
Join Date: Oct 2009
Location: Great White North
Posts: 1,520
|
Re: Stock 3.73 or 3/4 ton 4.10 axles
Quote:
On 33 inch tires at a 60 mph cruise with 3:73 gears the 700r4 would turn 1595rpm and the nv4500 would turn 1709rpm. Bumping up to 4:10 gears would raise the rpm to 1753 and 1879 respectively. Will your engine run happy in your truck cruising in these ranges. Run different numbers yourself at http://www.grimmjeeper.com/gears.html
__________________
Jeff. '72 Blazer K5 "Camshaft opinions are like belly buttons; everyone has one and no two are alike" My Blazer Build: http://67-72chevytrucks.com/vboard/s...d.php?t=626752 My Engine Build: http://67-72chevytrucks.com/vboard/s...d.php?t=637336 |
|
08-11-2013, 10:37 PM | #10 |
Registered User
Join Date: Jul 2013
Location: Cloquet, MN
Posts: 20
|
Re: Stock 3.73 or 3/4 ton 4.10 axles
That is a great point! Planning to run a pretty stock 454 with bolt on fuel injection so it should like the lower rpms. I have a 700 already bolted up to a np205 so that's what I plan to use if I can build it strong enough for the 454 and 33's. not planning to beat on it to much so the tranny should take what I want to throw at it.
Posted via Mobile Device |
08-12-2013, 08:13 PM | #11 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,727
|
Re: Stock 3.73 or 3/4 ton 4.10 axles
With the 700 I would definitely run the 4.10. You will most likely need driveshafts made so I would do all the mods at the same time.
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
Bookmarks |
|
|