The best time I ran was a 16.32@83mph. Thas it with a 2.31 60-foot time. All I have is a 83 T/A with stock LG4, auto, and 3.73's. That was with the timing at the stock 6 degrees (i forgot my timing light). Does this time sound right for my car?

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1983 T-top Trans Am. All stock (for now) LG4/auto/3.73 posi. 70,000 original miles. SLOWLY going through a Knight Rider conversion. (it will be done one of these years)

 

With an LG4 and only the 3.73 gears, it sounds about right.

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Pat Hirsz
www.iit.edu/~hirspat/MyPage2.htm
88 305TBI
Mods:Hooker Aerochamber 3" exhaust, no cat,SLP 1 5/8" headers and y-pipe March pullies, no smog, 180 thermo,
14x4 K&N, 3.42 gears(open), Ultimate TBI Mods,AFPR,MSD(ignition,coil&wires),Edelbrock TBI Manifold, 190ltr/hr fuel pump,
Eibach springs with KYB's all around,
Harwood cowl hood, Z-28 wing, fresh paint(black)
120,000 miles, 5spd, T-tops
0-60mph-7.2s-Gteched

92 RS, 305TBI, auto, 3.08 gears, 180 thermo, glasspack (no muffler)

 

With LG4, open element air cleaner, DR rods/H hanger, timing advanced 6 degrees, 3.08 open rear, I ran 16.8's @ 80 mph at 5800' Bandimere (high 2.4 60'). Corrected to sea level that's 15.6's @ 86. Even with the stock air cleaner, I was running 17.0-17.1's (15.8's).

Sound right to you?

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. 2-1/2" cat-back, ZZ3 intake, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam, ported World 305 heads, Hooker 2055 headers, 3" Catco cat & 3" cat-back, Spohn SFCs).
57 Bel Air, my 1st car. '66 396, 9.7 CR 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 @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).

 

I think im going to mess with my timing a little bit and take it out there next week. Right now it is running at the stock 6*. How much timing will an LG4 normally take before it starts to ping? Id just like to know where to start. Hopefully, ill break into the 15's with my little stump pulling 305 Later guys

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1983 T-top Trans Am. All stock (for now) LG4/auto/3.73 posi. 70,000 original miles. SLOWLY going through a Knight Rider conversion. (it will be done one of these years)

 

The '83 LG4's only had about 8.6:1 compression, so they can typically take around 10 degrees base advance with no problems.

The info I quoted was from last year. At 6 degrees, I had to run mid-grade to avoid pinging. It was this year that I discovered my EGR passage was plugged, which lead to the pinging. Now, I've got it at 7 degrees, running regular, with no pinging.

But, '85 and later LG4's had the 9.5 CR, so that probably helps my times and promotes pinging at an earlier advance. Even so, CHP's "My Generation Camaro", an '87 LG4, was run with 10 degrees with no reported problems (not sure what octane they were running, though).

 

Oh, until you remove the restriction of that stock single-snorkel air cleaner (either dual-snorkel or open element), 15's are probably a dream.

 

Yeah, I pulled the air cleaner off when I raced it. My timing is only at about 5* right now. I checked it again. So im going to bump it up 2* at a time until it pings and see how she does this friday night. Hopefully, ill break 15's with my beast of a 305

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1983 T-top Trans Am. All stock (for now) LG4/auto/3.73 posi. 70,000 original miles. SLOWLY going through a Knight Rider conversion. (it will be done one of these years)