stock dyno numbers
Thread Starter
Member
Joined: Aug 2015
Posts: 126
Likes: 0
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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Joined: Oct 2004
Posts: 4,528
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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
Joined: Sep 2005
Posts: 28,023
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
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.
L69 did around 150 - 160 HP @ 4200 and about 240 ft-lbs at maybe 2800 or thereabouts.
Thread Starter
Member
Joined: Aug 2015
Posts: 126
Likes: 0
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.
Thread Starter
Member
Joined: Aug 2015
Posts: 126
Likes: 0
From: Key West, FL
Car: 1984 Z28
Engine: LG4 305/4bbl for now
Transmission: 5-Speed
Axle/Gears: 3.23 Posi
Supreme Member

Joined: Aug 2002
Posts: 1,262
Likes: 60
From: ARIZONA
Car: 92 Trans Am Conv
Engine: LB9
Transmission: T5
Axle/Gears: 3.08
Re: stock dyno numbers
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.
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.




