I have an 83 TA, 305 LG4, 4bbl, metric 200, no AIR or ECM. The car has about 100K miles on it. The only mods are headers, highflow cat and 3 inch catback.

Can someone tell me what the stock timing is for that motor and about how far can I expect to go with advancing it.

Thanx

 

I was going to give this a shot, then saw the "Canada". Non-CC, correct?

I know the CC timing is zero, can be moved to 6 if willing to go up in gasoline grade. For a non-CC, I'd guess around 10, but you should try that and other settings to see what works best for you.

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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. '66 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, 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 @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).

 

i have the same set up, I run at 10 on 87 octane and at 15 on 89, never have knock but depends on rear gears a little due to load differences (like 2.93 compared to 3.73) and exhaust, but i have adj timing control from msd

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82 Z28 have LG4-305"
Rebuilt heads-3 angle valve job,ported and gasket matched. edelbrock performer, chevy 1.6:1 roller rockers,MSD6AL, rebuilt carb,15x4" K&N
3"flowmaster american thunder, Mac high flow cat,headman headers,
700-R4--B&M shift kit, B&M tranny cooler.
Sub-frame connectors, boxed lower control arms and torque arm. 1.5" front sway bar, new BFgoodrich radial T/A's--215/65 front 255/60 rear
RADIO-- premier Deh-p300
2-10"kicker SPLs,ZR240,premier 434x(4 way), custom built fiberglass box for subs. pioneer 6X9 & 4X6, grant GT steering wheel

 

I'm running my non-computer LG4 at 12 degrees and it is very happy on regular unleaded!

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1986 Camaro Sports Coupe
T-tops, power hatch, third brake light
LG4 305 V8, Q-Jet 4bbl
TH700R4 transmission
Air, pw, pl, pb, ps
Kenwood cassette, Pioneer component front speakers
Rockford Fosgate 6x9 Punch rear speakers
Aluminum slots and Goodyear 225x60R15 Eagle HP tires

 

After you advance the timing make sure to check your plugs every now and again to make sure you aren't running to hot and burning up the engine.

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'87 Bird 350 .060 over 700R4 + Lots more