Re: Any body have any dealings with the chevy 6.2 liter at the track?
Quote:
Originally Posted by Burger Steak & Eggs
It sounds like they are having to use more and more aggressive camshafts to get peak hp numbers from two valve pushrod engines that the powerband is getting compromised, i.e. not as wide, less area under the curve?.
Not to mention they have more displament. 6.2 vs 5.7 . Thats a big enought difference!
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2008 Tundra Reg Cab, 5.7L
2007 Ford Edge SEL AWD, Black! (wifes)
Pulling 2001 288 Sunsation with a supercharged HP500EFI.
Re: Any body have any dealings with the chevy 6.2 liter at the track?
Chevys do have traction control that can be turned off. But that eaton locker rearend is going to help on the l launch. My diff is loosened up some and it is now a major one wheel peel.
Why do you guys keep saying the chevys are lighter? The Chevy shows to be 5371 plus lbs and that is Heavier than the Tundra.
Re: Any body have any dealings with the chevy 6.2 liter at the track?
Quote:
Originally Posted by Canada Jeff
Not to mention they have more displament. 6.2 vs 5.7 . Thats a big enought difference!
Very ture on the displacement. But the have a ton of torque managment going on in those. I would be willing to bet a programmer would wake it up quite a bit.
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2007 White DCSB, Drop in K&N filter, Flomaster 70 series replacement muffler. (no cat back)
Re: Any body have any dealings with the chevy 6.2 liter at the track?
Quote:
Originally Posted by Burger Steak & Eggs
It sounds like they are having to use more and more aggressive camshafts to get peak hp numbers from two valve pushrod engines that the powerband is getting compromised, i.e. not as wide, less area under the curve?.
Everyone on here likes to dismiss a chevy pushrod 2v engine as weak and old technology. I cant speak for the 6.2 because I havent seen a dyno, but the 5.3 has one of the flattest torque curves I have seen for a v8. They make 90%+ of their torque between 1800 and 5500 rpm's. Although its torque is peaked at a little higher rpm than the 5.7 (4000 rpm vs 3600), the 5.7 isnt quite that wide with its torque curve even with DOHC and VVTi.
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Mine: 2007 Tundra Double Cab, 5.7L, slate, 4x2, Flowmaster 50 series dual in/dual out, Homemade leveling kit (2.5"), black headlight mod, white LED gauges, custom 8" Sub enclosure
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Previous Vehicles:
1990 Jeep Wrangler Islander, Rancho Lift
1992 Chevrolet Silverado Z71 4x4 RCSB - 190,000 miles and still running strong when I sold it.
2001 Honda Magna VF750
2002 Chevrolet Tahoe Z71
2006 Chevrolet Trailblazer SS (8.9 sec 1/8 mile - STOCK)
2007 Tundra Double Cab, TRD 4x2, 4.7L, desert sand
Re: Any body have any dealings with the chevy 6.2 liter at the track?
Quote:
Originally Posted by music
...The Tundra doesn't seem to use much TM, but GM stock has *a lot*. Removing it is night and day for low-end pull...
The Tundra has huge TM (traction control). Even with traction control turned off it's very noticeable, especially with our high 60-foot times (2.2 seconds). We should be able to pull better 60-foots with the low first gear and high torque.
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2007 Tundra 5.7 6-spd 2wd
Silver, double cab, short bed
TRD package
Re: Any body have any dealings with the chevy 6.2 liter at the track?
Quote:
Originally Posted by Fromanhb
The Tundra has huge TM (traction control). Even with traction control turned off it's very noticeable, especially with our high 60-foot times (2.2 seconds). We should be able to pull better 60-foots with the low first gear and high torque.
That's pretty much not an issue in 4WD.
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Re: Any body have any dealings with the chevy 6.2 liter at the track?
Quote:
Originally Posted by TX Tundra 07
Everyone on here likes to dismiss a chevy pushrod 2v engine as weak and old technology. I cant speak for the 6.2 because I havent seen a dyno, but the 5.3 has one of the flattest torque curves I have seen for a v8. They make 90%+ of their torque between 1800 and 5500 rpm's. Although its torque is peaked at a little higher rpm than the 5.7 (4000 rpm vs 3600), the 5.7 isnt quite that wide with its torque curve even with DOHC and VVTi.
Not to mention chevy's 2 v's are out doing most of the modular "high tech" motors and getting better gas milage.
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2007 White DCSB, Drop in K&N filter, Flomaster 70 series replacement muffler. (no cat back)
Re: Any body have any dealings with the chevy 6.2 liter at the track?
Quote:
Originally Posted by Fromanhb
The Tundra has huge TM (traction control). Even with traction control turned off it's very noticeable, especially with our high 60-foot times (2.2 seconds). We should be able to pull better 60-foots with the low first gear and high torque.
Chevy uses a lot of TM, go drive one and feel it shift gears at WOT. The TM on my Tundra is not near what the chevy's is. We have a low first gear due to the 4:30 rear end. Their transmission has a lower first gear with a higher rear gear (3.42) They are actually in the same ball park first gear wise. The fact that they have the eaton locker will provide a lot better traction then the Tundra will ever know. Now that they have the 3:73 gears going in, it should pull the Tundra no problem. (stock to stock)
__________________
2007 White DCSB, Drop in K&N filter, Flomaster 70 series replacement muffler. (no cat back)
Re: Any body have any dealings with the chevy 6.2 liter at the track?
Quote:
Originally Posted by TX Tundra 07
Everyone on here likes to dismiss a chevy pushrod 2v engine as weak and old technology. I cant speak for the 6.2 because I havent seen a dyno, but the 5.3 has one of the flattest torque curves I have seen for a v8. They make 90%+ of their torque between 1800 and 5500 rpm's. Although its torque is peaked at a little higher rpm than the 5.7 (4000 rpm vs 3600), the 5.7 isnt quite that wide with its torque curve even with DOHC and VVTi.
I don't understand how "pushrod" engines could be dismissed as old technology. Afterall, overhead cam designs made their debut circa 1920, so it's hardly "new technology" either. Each has it's benefits/drawbacks. Modern push-rod engines are way more advanced than their predecessors, as are the current-gen OHC designs.
Re: Any body have any dealings with the chevy 6.2 liter at the track?
Quote:
Originally Posted by SR5NEWBIE
Chevy uses a lot of TM, go drive one and feel it shift gears at WOT. The TM on my Tundra is not near what the chevy's is. We have a low first gear due to the 4:30 rear end. Their transmission has a lower first gear with a higher rear gear (3.42) They are actually in the same ball park first gear wise. The fact that they have the eaton locker will provide a lot better traction then the Tundra will ever know. Now that they have the 3:73 gears going in, it should pull the Tundra no problem. (stock to stock)
I already know/agree with everything you said here. :P
Simply stating that our tundra has a lot of TM too. I was referencing more to VSC OFF, full throttle, off-the-line TM rather then gear shifts.
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2007 Tundra 5.7 6-spd 2wd
Silver, double cab, short bed
TRD package
Re: Any body have any dealings with the chevy 6.2 liter at the track?
. 6.2 vs 5.7 . Thats a big enought difference!
This guy
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