Whats the Difference between L03 and LG4?
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Member
Joined: Nov 2001
Posts: 278
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From: MA
Whats the Difference between L03 and LG4?
I have no clue. Someone sorta made the comment that they are slow. I have an '85 Z28 with carb. What kind do I have?
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1985 Camaro Z28
305
5-speed Transmission
Flowmaster Exhaust
4 barrel carb
8mm wires
Kenwood 600 amp
Sony Deck
4 6x9 Jenson Speakers
2 4x6 Polk Audio
2 10" JL w0 Subwoofers
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1985 Camaro Z28
305
5-speed Transmission
Flowmaster Exhaust
4 barrel carb
8mm wires
Kenwood 600 amp
Sony Deck
4 6x9 Jenson Speakers
2 4x6 Polk Audio
2 10" JL w0 Subwoofers
Supreme Member
Joined: Jul 1999
Posts: 18,457
Likes: 16
From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
L03 = TBI (base model V8, 88 up)
LG4 = carb (base model V8, 82-87)
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"So many Mustangs, so little time..."
ICON Motorsports
LG4 = carb (base model V8, 82-87)
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"So many Mustangs, so little time..."
ICON Motorsports
Joined: Mar 2000
Posts: 43,187
Likes: 42
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
Take a look at the 8th character of your VIN. If it is an "H", you have (or at least the car originally had) an LG4. If a "G", you have the more powerful (190 HP) L69.
What does your air cleaner look like and/or say? If it has a single snorkel, LG4. If there are two snorkels and it says "305 HO", L69.
In '85, the LG4 finally got higher compression than it had before, but power was only 155 anyway. The 165-horse LG4 didn't show up until '86, and even then only in the higher-end models.
But, for what it's worth, even if an LG4, it's still a better base on which to build than an LO3. I sure like the way mine turned out.
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4, 2300 stall TC. Ported World 305 heads, Crane PowerMax 2050 cam. ZZ3/4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster 80. 2.93 limited slip. Spohn SFCs waiting to be installed. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
What does your air cleaner look like and/or say? If it has a single snorkel, LG4. If there are two snorkels and it says "305 HO", L69.
In '85, the LG4 finally got higher compression than it had before, but power was only 155 anyway. The 165-horse LG4 didn't show up until '86, and even then only in the higher-end models.
But, for what it's worth, even if an LG4, it's still a better base on which to build than an LO3. I sure like the way mine turned out.
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4, 2300 stall TC. Ported World 305 heads, Crane PowerMax 2050 cam. ZZ3/4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster 80. 2.93 limited slip. Spohn SFCs waiting to be installed. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
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