[Shotimes] Re: D.Potter, you did not beat a Z06 with your SHO !!!

[James F. Ryan III]

> Early C4's had 230hp (84-85, 86?), they didn't get a bump to 245hp until
the
> F-Bodies got the factory 350 (rated at 230hp in Camaros and 225hp in
> Firebirds) in 1987.

Close but no cigar, Ron.   :^)   The first C4 (1984) used the same engine as
the last C3 (1982).

1984    L83    9.0:1    205 hp    290 lb-ft    throttle-body injection
(Cross-Fire Injection)


1985-1986 introduced the TPI system - added 25hp and 40lb-ft

1985    L98    9.0:1    230    330    port injection (TPI)

1986    L98    9.0:1    230    330    port injection (TPI)


1987-1989 all cars got Aluminum heads - added 10hp and 15lb-ft
* - ordering 3.07 gears got you low restriction exhaust and 5hp more

1987    L98    9.5:1    240    345    port injection (TPI)

1988    L98    9.5:1    240    345    port injection (TPI)
1988    L98    9.5:1    245              port injection (TPI)    3.07 gears
& low-restrict exh

1989    L98    9.5:1    240    345    port injection (TPI)
1989    L98    9.5:1    245              port injection (TPI)    3.07 gears
& low-restrict exh


1990-1991 new ECU and lighter pistons - added 5hp

1990    L98    9.5:1    245    345    port injection (TPI)
1990    L98    9.5:1    250    350    port injection (TPI)    3.07 gears &
low-restrict exh

1991    L98    9.5:1    245    345    port injection (TPI)
1991    L98    9.5:1    250    350    port injection (TPI)    3.07 gears &
low-restrict exh


1992-1996 used the LT1 - reverse flow cooling allowed higher c/r, and
free-flowing exhaust w/ 2 cats, new fuel injection system - added 55hp but
lost 15ft-lb

1992    LT1  10.5:1    300    330    port injection

1993    LT1  10.5:1    300    330    port injection

1994    LT1  10.5:1    300    330    port injection

1995    LT1  10.5:1    300    330    port injection


1996 LT4 available only in "Gran Sport" and Sebring Silver Anniversary Ed.
also only available with 6-speed MTX
LT4 improvements - better flowing heads with higher c/r, larger valves,
roller rocker arms, and higer-lift camshaft - added 30hp and 10ft-lb

1996    LT1  10.5:1    300    330    port injection
            LT4  10.8:1    330    340    port injection


Been thinking of buying a C4 for a while, and had the specs on my hard
drive.


Jim Ryan - Wayne, NJ
91 Plus - all white/mocha
FPS 96 brakes, Carbotech pads, LPM and 80mm MAF w/ K&N and SHO Shop can &
horn, SHO Shop Y-pipe and cat-back w/ Edelbrock mufflers, KONIs with SHO
Shop linear springs, f&r strut tower braces and poly bushings all around,
HiRevs Jr clutch and lightweight flywheel, underdrive pulleys, torque
limiters, Cincy SHO reinforced engine mounts, Bridgestone Potenza RE730
tires (excellent), and police grille.








1980    L48    8.2:1    190    4bbl
            L82    9.0:1    230    4bbl

1981    L81    8.2:1    190    4bbl

1982    L83    9.0:1    200    Cross-Fire Injection (TBI)

1983