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stock dyno numbers

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Old Nov 1, 2016 | 02:27 PM
  #1  
1987L69's Avatar
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From: Key West, FL
Car: 1984 Z28
Engine: LG4 305/4bbl for now
Transmission: 5-Speed
Axle/Gears: 3.23 Posi
stock dyno numbers

Does anyone have stock, or close to stock dyno numbers as a base line? If so post them up with mods of any! Hoping to take mine to the rollers and see what it makes and what I should expect
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Old Nov 1, 2016 | 02:38 PM
  #2  
midias's Avatar
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From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: stock dyno numbers

115-130whp depending on condition of the motor with a stock 150hp LG4
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Old Nov 1, 2016 | 06:56 PM
  #3  
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Re: stock dyno numbers

Yup, as far as peaks, LG4 would have done around 120 HP @ 3500 or so and maybe 220 ft-lbs @ 2500.

L69 did around 150 - 160 HP @ 4200 and about 240 ft-lbs at maybe 2800 or thereabouts.
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Old Nov 2, 2016 | 12:10 PM
  #4  
1987L69's Avatar
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From: Key West, FL
Car: 1984 Z28
Engine: LG4 305/4bbl for now
Transmission: 5-Speed
Axle/Gears: 3.23 Posi
Re: stock dyno numbers

I know what it "should" make on paper, but I was hoping to get some real dyno numbers. I think my LG4 is in good shape, great oil pressure, great engine vacuum, 22in hg at idle. no smoke on start up. 94k original miles.
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Old Nov 2, 2016 | 12:36 PM
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From: ARIZONA
Car: 92 Trans Am Conv
Engine: LB9
Transmission: T5
Axle/Gears: 3.08
Re: stock dyno numbers

So dyno it.
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Old Nov 2, 2016 | 12:43 PM
  #6  
1987L69's Avatar
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From: Key West, FL
Car: 1984 Z28
Engine: LG4 305/4bbl for now
Transmission: 5-Speed
Axle/Gears: 3.23 Posi
Re: stock dyno numbers

Originally Posted by Vanilla Ice
So dyno it.
I live in Key West Florida. I am closer to Cuba than A car dyno
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Old Nov 2, 2016 | 01:25 PM
  #7  
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From: ARIZONA
Car: 92 Trans Am Conv
Engine: LB9
Transmission: T5
Axle/Gears: 3.08
Re: stock dyno numbers

Originally Posted by 1987L69
I live in Key West Florida. I am closer to Cuba than A car dyno
Then you'll have to take the internet's word on it. I'm confused as to what you're looking for. You've been told what you asked for and aren't happy.
Do you want inflated numbers?
Do you want deflated numbers?

Expect low 100s hp and low 200s tq.
The car is 30 years old. It won't dyno higher.


And being 30 years old, people aren't taking these beasts to dyno's all the time. So if you can't find a graph on google or from searching this site, you won't find anything but what's already been posted.

Last edited by Vanilla Ice; Nov 2, 2016 at 01:28 PM.
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Old Nov 2, 2016 | 01:26 PM
  #8  
1987L69's Avatar
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From: Key West, FL
Car: 1984 Z28
Engine: LG4 305/4bbl for now
Transmission: 5-Speed
Axle/Gears: 3.23 Posi
Re: stock dyno numbers

No, im looking for people that have dynoed their LG4's.
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