Newbie question- I have read about the increased performance of 4.56 gears and magnacharger. From what I've read it seems that the magnacharger adds about 100 horsepower and lowers the 0-60 times. The 4.56 gears also do this without any increase in horsepower. My question is this- in people's opinion, what would be the "perceived" horsepower increase of the gears following installation? Hope I've worded this correctly.
Well the gear change is not even in the same ball part as the super charger, With the gear change you lose fuel mileage, With a super charger it doesn't change, The super charger cost more but you get more, I don't know if anyone has done a 0-60 with 3.73 and then with 4.56, That would be the only true way to tell, By the way welcome to the forum
My SSR: 2003 "Ilsa" True Duals w/Jones Glasspacks, Eibach Springs, Addco Sway Bars, 4.56 Gears
Yep, I'm thinkin' that 100 horses is about the increase that I got from the supercharger (after paying for a custom tune). The 4.56 gears don't do anything for horsepower, but they really give the truck a lot of jump from the start and in the lower gears.
Yep, I'm thinkin' that 100 horses is about the increase that I got from the supercharger (after paying for a custom tune). The 4.56 gears don't do anything for horsepower, but they really give the truck a lot of jump from the start and in the lower gears.
I put 4:56s in my 05 6 speed it does give it more power in 1, 2 and 3, after that does pull strongert in 4 and 5 but nothing more in 6. The performance is much better in the lower gears than when I was running the 3:73s. There in no substitution for HP. Then add the gears, NOW YOU CAN PUT THAT POWER TO THE GROUND.
I agree that the magnacharger is the ultimate way to go and know that a gear change does not add horsepower. The laws of thermodynamics state as much. Does anybody have 0-60 times for a 2005 6 speed with a magnacharger vs a 4.56 swap? If the 4.56 gear swap lowers the time by .5-1seconds how much horsepower increase using other means would you have to have to achieve these results?
I have a question in regard to the super charger 'not' affecting the fuel economy numbers.
I have always been of the opinion that a turbo charger will not affect mileage if you stay out of the throttle when compared to a non turbo version of the same vehicle but 'air pumps' are pressurizing the combustion process at all times and hence require richer mixtures to compensate for that beginning right from the bottom end of the power curve.
Who has the data on this for sure?
It takes power to drive the blower, for sure. But is the mixture really richer, or more fuel to keep the mixture the same for the increased oxygen content? Either way, you're making more power for your pedal travel, so you should need less travel to perform the same, in normal driving. The problem is the temptation to use the same travel, for more giggles. But the guys with magnachargers say they're getting the same, or better, mileage when they keep their foot out of it.
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I too have the 05 6spd with 4.56 gears. I have the slightest what the 0 to60 times are tho.
I am waiting on my air filter to get here, and then I am going to take it to PCMfor less in Mooresville and let them do a tune on it, and re-adjust my speedo too.
After that (hopefully in the next two weeks) I am going to make a trip down to Shaddy Side Drag strip for a few runs at the 1/8 mile.
It sounds that the 4.56 gear change is good from 0-70 or so but after that there is no difference while the supercharger would keep pulling strong way past that. Sounds like, for me, the best bang for the buck up to 70-80 mph would be the gear change. Does anyone have info as to 0-60 times for the gear change compared to the supercharger? Looking for a strong boulevard cruiser and that's all. What do you all think? By the way, this is a great site!!!
My SSR: 05 6 sp. with 4.56 gears, ZR1 clutch, Edelbrock intake, Lunati cam, Crane rockers, C6 modified pan
Chuckster, to your original question, when I changed to 4.56s my fannyometer said 50 hp! What also changed dramatically was the drivability of my 6 speed version. The change is way easier on the clutch. For the money spent, you can't beat a gear swap. For $700-$800 compared to $7000 - $8000, there's no comparison in value.
It's somewhat interesting, as I've been slightly involved with 2 members, with 04s, both with new gears installed. One went with a cam change, headers, convertor, K&N air intake, custom tune, and 4.30 gears. He's gone 14.22 @ 96 mph, in the quarter. His best 60 ft. time is 2.096. I'm not sure what that cost him, but my guess is, less than a Magnacharger with installation. The other owner went with the Magnacharger, 1.8 rockers, headers, custom tune, and 4.56 gears. He went 14.78 @ 92.5 mph with a 2.211 60 foot time. So, there's a couple of examples of ways to increase performance with the 5.3, but in different directions.
The gear change affects all the drive gears the same amount, about 18% lower with the 4.56s. In my 6 speed I really noticed the difference in 6th gear, as it was pretty much useless with the stock gearing.
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A 4:56 gear swap..... And you felt 50 more HP in your seat?.... The car/truck in question left the "HOLE" quicker...... But had no more HP before it started. Sorry to put it like this..... The gear swap in question (Be it lower or higher) is using the HP that is being produced by the engine and the gear swap makes it faster or slower in a 1/4 mile frame of mind that you post in?
If you want to feel 50 HP in the seat of your pants as you post....(Which I find very hard to believe) Then change gears to heart's content and believe that you added more HP because the seat of your pants told you so..... Then so be it....I mean really now.....
You misunderstand, Blackie, he didn't say the gears would increase the hp. The 50 seat-of-the-pants hp, means the increase in performance, quicker acceleration that you feel from the gear change, is approximately what another 50 hp would feel like with the stock gearing.
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My SSR: 05 6 sp. with 4.56 gears, ZR1 clutch, Edelbrock intake, Lunati cam, Crane rockers, C6 modified pan
Laugh on Mr. "Blackie", as it appears you're the only one present, that doesn't "get it"! Read post #1 again, carefully this time, then check out post #12, and if things don't clear up somewhat, then launch into one of your normal tirades again.
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Would installing 4.10 gears be a good choice, with or without the Magna Charger. Was going to install 4.10s now then a Magna Charger down the road and heard this was a very good combination? Appreciate any comments!
just me but I think the best gears for a super charger is the stock 3.73's, As for the 4.10's ver the 3.73's, No much, I run 4.11 gears and if I didn't know I had them just driving around town I would never know they were changed and on the highway I would just think my converter wasn't locking up, With 4.11's I wish I had a couple more gears I could go in to get the rpm's down and the mileage up and the sound down
Let's talk about what really moves the truck........ Torque
Changing gears will give you a higher mechanical advantage. The difference between 3.73 and 4.10 is 10%. This means you will have a 10% increase in TORQUE at the wheels. Changing from 3.73 to 4.46 is a 20% increase.
Using "seat of the pants" guessing at rear wheel torque numbers and really generalized calculations, it looks like this:
With a Magnacharger, there are a LOT of variables that put wild variabilities in the RWTQ numbers. They include Supercharger model, boost level, OAT, pressure altitude and who tuned it.
When I installed the TVS2300 Magnacharger with 7 pounds boost on my stock 06 (auto) with no headers and only a good flowing dual exhaust, we were at 85F, 1500 feet and Joe Delano's tune. (I had a really awesome tune from Joe before the S/C, so it's almost not a variable here)
With 3.73 gears and a really consistent dyno, here's the result:
60 foot 2.27
1/8 mi 9.29 @ 79.5
1/4 mi 14.25 @ 98.5
I'm guessing my times will be in the high 12's to low 13's this October when I go back again.
I'm not trying to sway anyone one way or another, I thought some objective data would be useful here........
By the way, I wholeheartedly agree with Double-L about the 3.73 gears with the blower. There's so much doggone torque (~400 lbft @ 2000 rpm) across the entire power band that it makes a lot of sense to stay with the slightly taller gears. I'll see where my 3rd gear RPM is in the 1/4 mile this October when I go through the lights..... should be at about 4500-5000.
This much torque sure makes "passing gear" a lot of fun to use.....
Regards,
Mike
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just do the gears & a tune!!
best mod you can do to any ssr is gears!!
mine have been in mine for over 4 yrs.
I agree... A better takeoff..... 4:56 gears,a good tune, and if you want to get real crazy a 3400 stall speed converter.......In my opinion the "best" bang for the bucks you can do....
Topspin, can you point me to the member with the '04 who did the cam/converter/4.30 gears? I'm considering a similar build on my '03 and would like to talk dirty details with that member if you wouldn't mind connecting us. Feel free to have him PM me, thanks!
My SSR: goodies by mike in az, lyndon wester, greg ducato, & sinister.
Quote:
Originally Posted by ssr_u4ia
Topspin, can you point me to the member with the '04 who did the cam/converter/4.30 gears? I'm considering a similar build on my '03 and would like to talk dirty details with that member if you wouldn't mind connecting us. Feel free to have him PM me, thanks!
Chuckster, to your original question, when I changed to 4.56s my fannyometer said 50 hp! What also changed dramatically was the drivability of my 6 speed version. The change is way easier on the clutch. For the money spent, you can't beat a gear swap. For $700-$800 compared to $7000 - $8000, there's no comparison in value.
It's somewhat interesting, as I've been slightly involved with 2 members, with 04s, both with new gears installed. One went with a cam change, headers, convertor, K&N air intake, custom tune, and 4.30 gears. He's gone 14.22 @ 96 mph, in the quarter. His best 60 ft. time is 2.096. I'm not sure what that cost him, but my guess is, less than a Magnacharger with installation. The other owner went with the Magnacharger, 1.8 rockers, headers, custom tune, and 4.56 gears. He went 14.78 @ 92.5 mph with a 2.211 60 foot time. So, there's a couple of examples of ways to increase performance with the 5.3, but in different directions.
The gear change affects all the drive gears the same amount, about 18% lower with the 4.56s. In my 6 speed I really noticed the difference in 6th gear, as it was pretty much useless with the stock gearing.
Just reading this over and don't know what is wrong when I first got my 04 I put a Magnacharger, 1.8 rockers, Headers and left the gears stock and went 13.70 at 104 and he went 14.78 at 92.5 with 4.56's???
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I put 4:56s in my 05 6 speed it does give it more power in 1, 2 and 3, after that does pull strongert in 4 and 5 but nothing more in 6. The performance is much better in the lower gears than when I was running the 3:73s. There in no substitution for HP. Then add the gears, NOW YOU CAN PUT THAT POWER TO THE GROUND. 
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