so I’m in the midst of building my highway queen and I was going to swap axles out of a 2000 Chevy and he has a 373 set up front and back just wondering what the best gear ratio is for this highway queen with the LS swap and 4L60e -241c anyone have good advice for this as it has 308 gears now but want disc brakes with the factory set up I like the idea of adding inch and a half to 2 inches to the rear axle just looking for some advice
CK5
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Gear ratio
- Thread starter SSS
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From one of your other posts it looks like you are planning on 33" tires? Given that plus the extra power from an LS swap (and the gearing in the 4L60) I think 3.73 is a pretty reasonable ratio.
I agree with the above question about the plan for the front axle. There is no easy swap from any 2000 GM truck that I am aware of. You also mentioned fabrication in another post, so maybe you know what you are getting into, but there may be easier/better ways to accomplish your goals that may be worth brainstorming here.
I agree with the above question about the plan for the front axle. There is no easy swap from any 2000 GM truck that I am aware of. You also mentioned fabrication in another post, so maybe you know what you are getting into, but there may be easier/better ways to accomplish your goals that may be worth brainstorming here.
yes, no issues at all on fabrication as that’s what I’ve done for 35 years just really trying and to zero in these are available I should scoop them up but I’m definitely up for any ideas to consider. I don’t know much about the conversions, but I do like the idea of being 2 inch wider with a factory axle on each side. I’m assuming the front axle would be the same as the one I have stock now as I’m sure it came out of something up to 91.
I would probably recommend passing on the 2000 Chevy axles. Primarily because of the IFS. You could probably use the rear axle, but I am sure you would have to move/add the spring perches and shock mounts, and at that point I think there are better axles to start with (9.5" semi float 14 bolt, which I think can be found in some 2000+ trucks with factory disc brakes, for example).
That being said, for your use case, does it even make sense to axle swap? A rebuild/regear of the factory rear end, maybe with a TrueTrac or similar, would probably work well and be reasonably durable on the street. And rebuilt factory rear drums would probably be adequate.
I'm all in favor of improving/upgrading things, but I'm not sure it's worth it or makes sense here.
That being said, for your use case, does it even make sense to axle swap? A rebuild/regear of the factory rear end, maybe with a TrueTrac or similar, would probably work well and be reasonably durable on the street. And rebuilt factory rear drums would probably be adequate.
I'm all in favor of improving/upgrading things, but I'm not sure it's worth it or makes sense here.
I have a feeling that truck had an SAS done, he says the front axle came from a 91
I misunderstood what the donor axles were then, sorry about that!
You may have already thought of this, but the only thing that comes to mind, then, would be whether the donor front axle is passenger side drop or not. If it's out of an '87-'91 Blazer or Suburban then it should be, and your 241c should work of course. If not, then you may need to get the donor transfer case as well, and then figure out shifter linkage (or electronic shift?) for it, etc...
Just some things to consider and plan for. Good luck!
You may have already thought of this, but the only thing that comes to mind, then, would be whether the donor front axle is passenger side drop or not. If it's out of an '87-'91 Blazer or Suburban then it should be, and your 241c should work of course. If not, then you may need to get the donor transfer case as well, and then figure out shifter linkage (or electronic shift?) for it, etc...
Just some things to consider and plan for. Good luck!
Vague posts are vague.
didn't mention tire size, this will have a big effect. 3.73 is a good compromise gear. Coupled with the 4l60 low first gear and .70 over drive, a 32"-33 tire, you'll be happy.
70mph with a 32" tire would be right at 2k rpm
70mph with a 32" tire would be right at 2k rpm
Yes, sorry about being vague. It is a passenger side drop. My plan was to run.33x12.50x15 but I’m not sure if that rear axle poses a problem for the stock rims or not I’m sure somebody on here will know but once again, I apologize I just got excited and started typing , give me a little break. I just retired three weeks ago. I’m new at this. and I definitely will run the shift linkage somehow do not want a push button set up
To be fair, initially you said both axles are from a 2000. Incorrect or contradictory information will get you the wrong answers.
First of all, you have to tell us what vehicle you're working on! It sounds like maybe it's a square body Chevy? You mention a "14V" rear axle, which doesn't exist, but if it's a typical 14B full-floater GM axle, that means you're planning to go 8-lug. Since pickups went IFS in 1987, the only 8-lug donors from 87-91 are heavy pickups and 3/4-ton Suburbans. If you could link to pictures or description, guys here could ID the axles in about 5 minutes.
If you're talking about a 2000's Chevy that received a solid axle swap, that axle won't swap to a square body at all without a lot of fabrication.
33's with no lift will rub on turns, esp going in driveways and speed bumps and such. Even with a 2" lift will rub on turns with out the stock wheel back spacing.
14bff is a great axle 3.73 are going to be fine, esp with ls swap.
Now this front axle is where the mystery lies.
Only a 1973-77 d44 or 78-91 10b from a square will bolt in.
You can convert your front 10b ? To 8 lug they are same from knuckle to knuckle
14bff is a great axle 3.73 are going to be fine, esp with ls swap.
Now this front axle is where the mystery lies.
Only a 1973-77 d44 or 78-91 10b from a square will bolt in.
You can convert your front 10b ? To 8 lug they are same from knuckle to knuckle
