HO vs. STOCK
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iTrader: (4)
Joined: Oct 1999
Posts: 4,211
Likes: 3
From: GO PACK GO
Car: 83Z28 HO
Engine: Magnacharged Dart Little M 408
Transmission: G Force 5 speed
Axle/Gears: Moser 9" w/Detroit Trutrac
Higher compression, better flowing exhaust, more aggressive fuel curve, better cam.....stuff that makes an HO what it is. But both engines are stock...ie came from the factory that way.
Joined: Mar 2000
Posts: 43,187
Likes: 46
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Originally posted by Confuzed1
Higher compression..
Higher compression..
L69 also had the dual snorkel air cleaner (cowl inlet for 'Birds).
L69 also routed the AC lines differently (minor detail).
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Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Better exhaust manifolds as well. You only mentioned the rest of the exhaust. 
I heard something about early HO motors having the better X-rods and LG4s not having them, but I could be wrong about that.
I heard something about early HO motors having the better X-rods and LG4s not having them, but I could be wrong about that.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
As another "minor detail," I recently learned that the HO had the 15 pound flywheel. I've read that the HO might have had an underdrive crank pulley. Any truth there? They also were equipped with an electric fan 
. Maybe I'm off topic, so I'll shut up.
JamesC
. Maybe I'm off topic, so I'll shut up.JamesC
Joined: Mar 2000
Posts: 43,187
Likes: 46
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Ah, electric radiator fan and knock sensor. LG4 picked up electric radiator fan in '86, I believe also the knock sensor with the compression increase in '85 (somebody with an '85 will have to verify that - there's no mention of it in the Tech Data, although the electric radiator fan is mentioned for '86).
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