LT1 power band
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Racer
Joined: Jul 2003
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From: sykesville md
LT1 power band
What RPM does the the LT1 start making good HP. What Tc should i get . I aready have a 3.73 rear. I want to keep the car pretty streetable. And i want good ETs at the track. Thanks for youre input :chevy
[Modified by bstirn, 9:38 PM 9/2/2003]
[Modified by bstirn, 9:38 PM 9/2/2003]
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Re: LT1 power band (bstirn)
Well that's a complicated question. The LT1 makes a very flat torque curve. Because of this as the RPM's go up the HP continues to go up as well. It also makes that torque very low as well.
This is the dyno graph of my stock LT1
As you can see it makes 300 pounds of torque at 2100 RPM's and holds that until about 4200 before it starts to fall.
This is the dyno graph of my stock LT1
As you can see it makes 300 pounds of torque at 2100 RPM's and holds that until about 4200 before it starts to fall.
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
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Re: LT1 power band (Nathan Plemons)
Here's my dyno sheet from my 95 six speed.
Team Owner
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From: Athens AL
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Re: LT1 power band (bstirn)
For the TC, you would need something around 2400 for a daily, maybe 2600.
For a track car, with occasional street use, you could go higher.
For a track car, with occasional street use, you could go higher.
Drifting
Joined: Mar 2002
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From: Rome NY
Re: LT1 power band (vader86)
Are those numbers at the rear wheels? I'm not that familiar with reading Dyno charts. I ask because it's less than the ratings from the factory- aren't we supposed to be seeing ~340ft/lbs of torque?
Jared :flag
Jared :flag
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Re: LT1 power band (jsquared94)
Are those numbers at the rear wheels? I'm not that familiar with reading Dyno charts. I ask because it's less than the ratings from the factory- aren't we supposed to be seeing ~340ft/lbs of torque?
Jared :flag
Jared :flag
Le Mans Master
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From: Harbeson DE
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Re: LT1 power band (bstirn)
Here are some Dyno figures for you from various cars:
Note: Mine is the 94 Admiral Blue, type -o states it's a 96.
http://www.danddmobiledynoservices.c...corvettes_club
Note: Mine is the 94 Admiral Blue, type -o states it's a 96.
http://www.danddmobiledynoservices.c...corvettes_club
Pro
Joined: Jun 2001
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From: Florida
Re: LT1 power band (vader86)
Dynojet numbers are at the rear wheels. So you add roughly 15% for manuals, and about 17-18% for automatics to get the factory crank HP rating.
Was it just to get the numbers up from the horrible ratings posted in the 70's (ie, I believe the 305 Camaro pumped-out an "amazing" 140 HP...at least it was NET - I hope!)
:cheers:
Dr.
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Race Director
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Re: LT1 power band (DR'76)
All car makers still refer to flywheel numbers. The NET horsepower doesn't take into account drivetrain loss. It does however mean that the engine must be run with all accessories attached and emissions equipment, etc in a controlled environment.
In the old days there were no standards and they would skew the results badly by dumping very cold air into the engine, using a very free flowing exhaust, and not even having any of the accessories connected (possibly not even the water pump!)
In the old days there were no standards and they would skew the results badly by dumping very cold air into the engine, using a very free flowing exhaust, and not even having any of the accessories connected (possibly not even the water pump!)
Team Owner
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Re: LT1 power band (DR'76)
This should probably be a whole other topic, but when did GM (and the others) go back to GROSS horsepower with their ratings? I thought anything rated after (and maybe including???) 1972 was NET Horsepower (rear wheel).
Was it just to get the numbers up from the horrible ratings posted in the 70's (ie, I believe the 305 Camaro pumped-out an "amazing" 140 HP...at least it was NET - I hope!)
:cheers:
Dr.
Was it just to get the numbers up from the horrible ratings posted in the 70's (ie, I believe the 305 Camaro pumped-out an "amazing" 140 HP...at least it was NET - I hope!)
:cheers:
Dr.
Net is the HP rating at the crank, with all accessories, as it would be in the car
Gross is the engine at the crank, with no accessories
