need specs on heads for 92 Z
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Junior Member
Joined: Aug 1999
Posts: 59
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From: Missouri
need specs on heads for 92 Z
I am planning a build up on my motor, and intend to keep it numbers matching cause it's an anniversary edition. Therefore I need to find some flow charts on my heads anyone know where to look? I have 1.85/1.50 valves correct? What is the combustion chamber size on these again? Any info is appreciated-
-92Z 305ci
------------------
92 Z-28
305 -5speed
160 thermo.
K&N Air Filters
B&M Ripper
14.7 @ 96mph (stock run)
-92Z 305ci
------------------
92 Z-28
305 -5speed
160 thermo.
K&N Air Filters
B&M Ripper
14.7 @ 96mph (stock run)
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
Intake valve is 1.84" diameter. Chamber size is 58cc. Flow is less than optimum.
You should be able to do port and bowl cleanup, polish exhaust ports, have 1.94" valves installed and maintain the stock appearance. Probably won't flow as well as World S/R Torquer 305's, but they'll look right.
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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 CC system w/'87 LB9 block, ZZ3 cam, ported World 305 heads, Hooker 2055 headers, 3" Catco cat & 3" catback, restalled TC, 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).
You should be able to do port and bowl cleanup, polish exhaust ports, have 1.94" valves installed and maintain the stock appearance. Probably won't flow as well as World S/R Torquer 305's, but they'll look right.
------------------
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 CC system w/'87 LB9 block, ZZ3 cam, ported World 305 heads, Hooker 2055 headers, 3" Catco cat & 3" catback, restalled TC, 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).
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