Rear Wheel HP for Hemi
#1
12-31-2007, 02:26 PM
Rear Wheel HP for Hemi
First, let me say that I love my 04 QC and in the 3 years that I have owned it have been trouble free. My brother in law just bought an 07 a couple of months ago. Last week he read in the TruckIn mag a review of each brands true HP rating at the rear wheels. This stated that all 3 domestic brands were well below that advertised rating. It rated the Hemi around 250HP, which is more than a 10 to 15% loss drivetrain loss from the 345 rating. Anyway, has anyone here don a dyno on the hemi whithout any mods and can give me a true rating? My in-law has now started looking at the new Tundra but I find it hard to believe this review. Thanks for any feedback.
#2
12-31-2007, 02:41 PM
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#3
12-31-2007, 03:13 PM
RE: Rear Wheel HP for Hemi
All vehicles are advertised with crank horsepower, not wheel horsepower. It's been that way forever.
Drivetrain loss, while frequently expressed as a percentage, is more of a fixed amount. If your engine made 500 crank hp, it wouldn't mean you'd lose more to the drivetrain than the stock engine dones. It'll lose the same ~50hp it does now.
Drivetrain loss, while frequently expressed as a percentage, is more of a fixed amount. If your engine made 500 crank hp, it wouldn't mean you'd lose more to the drivetrain than the stock engine dones. It'll lose the same ~50hp it does now.
#5
12-31-2007, 05:00 PM
RE: Rear Wheel HP for Hemi
Saw the dyno comparisons on an '05 4x2 SCSB before (bone stock) and after (CAI, Cat back, LT Headers, Cam, Springs, Retainers, Super Damper, E-Fan & Tuner) KRC Performance got done with it. It made something like 255 RWHP before and I believe around 370 after.
#6
12-31-2007, 08:56 PM
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RE: Rear Wheel HP for Hemi
ORIGINAL: EastTNHemi
First, let me say that I love my 04 QC and in the 3 years that I have owned it have been trouble free. My brother in law just bought an 07 a couple of months ago. Last week he read in the TruckIn mag a review of each brands true HP rating at the rear wheels. This stated that all 3 domestic brands were well below that advertised rating. It rated the Hemi around 250HP, which is more than a 10 to 15% loss drivetrain loss from the 345 rating. Anyway, has anyone here don a dyno on the hemi whithout any mods and can give me a true rating? My in-law has now started looking at the new Tundra but I find it hard to believe this review. Thanks for any feedback.
First, let me say that I love my 04 QC and in the 3 years that I have owned it have been trouble free. My brother in law just bought an 07 a couple of months ago. Last week he read in the TruckIn mag a review of each brands true HP rating at the rear wheels. This stated that all 3 domestic brands were well below that advertised rating. It rated the Hemi around 250HP, which is more than a 10 to 15% loss drivetrain loss from the 345 rating. Anyway, has anyone here don a dyno on the hemi whithout any mods and can give me a true rating? My in-law has now started looking at the new Tundra but I find it hard to believe this review. Thanks for any feedback.
There's a vid of a RCSB 5.7 tundra running a 14.2 at 97mph bone stock....that's fast as hell for a stock mass produced truck. Here's a vid http://youtube.com/watch?v=KrRlDCIZDvs
