lg4 4 lg4
05-30-2001, 12:20 PM
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lg4 4 lg4
Im replacing an 84 lg4 with an 86. Are there any minor changes from year to year on the lg4? Differances with computer or smog equipment,anything like that
05-30-2001, 01:27 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Yup. '84 had dished pistons & low (8.6:1) compression, '86 has flat tops & higher (9.5:1) compression.
'86 also has knock sensor (good idea with the higher compression) and electric radiator fan. The fan has a tie to the heater control (turns the fan on when the A/C is on). I can't swear to this, but I believe the carb also has better secondaries on the '86 (AV opens wider, better rods/hanger).
If you can, get all the harnesses, sensors, distributor, ECM, et al, off of the '86. While you're at it, redo the exhaust to help that poor thing breathe better. Shoot, do the cam, too. And air cleaner. Tune the carb secondaries. Put World Products S/R 305 heads on it. Then, you'll have a better-than-an-HO 305.
Or, forget the '86 305 and get the Camaro 350 HO Conversion Kit from GM with the ZZ4 base engine. That takes care of all those problems. Lightens your wallet, too.
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, LT MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/95.5 @ 5800' Bandimere.
'86 also has knock sensor (good idea with the higher compression) and electric radiator fan. The fan has a tie to the heater control (turns the fan on when the A/C is on). I can't swear to this, but I believe the carb also has better secondaries on the '86 (AV opens wider, better rods/hanger).
If you can, get all the harnesses, sensors, distributor, ECM, et al, off of the '86. While you're at it, redo the exhaust to help that poor thing breathe better. Shoot, do the cam, too. And air cleaner. Tune the carb secondaries. Put World Products S/R 305 heads on it. Then, you'll have a better-than-an-HO 305.
Or, forget the '86 305 and get the Camaro 350 HO Conversion Kit from GM with the ZZ4 base engine. That takes care of all those problems. Lightens your wallet, too.
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, LT MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/95.5 @ 5800' Bandimere.
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