calling all 91 formula L98's
Thread Starter
Senior Member
Joined: Nov 2000
Posts: 601
Likes: 0
From: Queen Creek, AZ
Car: 91 Formula
Engine: 383 HSR
Transmission: 5th 700R4
Axle/Gears: 3.89
calling all 91 formula L98's
I just wanted to see how many 91 formulas w/L98 were here. If you want tell a little about your car i.e. color, t-top or not, wheels, mods, and miles.
https://www.thirdgen.org/rides/index.tgo?action=search
there you can search by year, model, engine, etc etc etc...
Be sure to search by formula, and formula 350 because technically in 91-92 there was only a Formula with the L98 being optional.
there you can search by year, model, engine, etc etc etc...
Be sure to search by formula, and formula 350 because technically in 91-92 there was only a Formula with the L98 being optional.
I recently just got my third , thirdgen. Its a 1991 Pontiac Firebird Formula 350. All stock with 66,100 miles. Black exterior, tan interior, t-tops, power windows, locks, mirrors, map lights on mirror, black cross lace rims, all disk brakes, 3.23 axle ratio, automatic 700r4 tranny, it has a aluminum driveshaft. Thats about it.
Trending Topics
Senior Member
Joined: Nov 2001
Posts: 927
Likes: 0
From: Winnipeg, Manitoba, Canada
Car: 1983 Firebird S/E
Originally posted by MdFormula350
I recently just got my third , thirdgen. Its a 1991 Pontiac Firebird Formula 350. All stock with 66,100 miles. Black exterior, tan interior, t-tops, power windows, locks, mirrors, map lights on mirror, black cross lace rims, all disk brakes, 3.23 axle ratio, automatic 700r4 tranny, it has a aluminum driveshaft. Thats about it.
I recently just got my third , thirdgen. Its a 1991 Pontiac Firebird Formula 350. All stock with 66,100 miles. Black exterior, tan interior, t-tops, power windows, locks, mirrors, map lights on mirror, black cross lace rims, all disk brakes, 3.23 axle ratio, automatic 700r4 tranny, it has a aluminum driveshaft. Thats about it.
Moderator
Joined: Feb 2000
Posts: 7,015
Likes: 2
From: Schererville , IN
Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
91 Formula 350 here :-)
350, auto, hardtop, 3.23 pwr locks windows etc
LT4hotcammed, ported vortec heads, 1.6 roller rockers, slp 1 3/4 headers and custom prom tuning by me in process
all this just at 74k on the clock :-)
less than 2 weeks running again
later
350, auto, hardtop, 3.23 pwr locks windows etc
LT4hotcammed, ported vortec heads, 1.6 roller rockers, slp 1 3/4 headers and custom prom tuning by me in process
all this just at 74k on the clock :-)
less than 2 weeks running again
later
Thread Starter
Senior Member
Joined: Nov 2000
Posts: 601
Likes: 0
From: Queen Creek, AZ
Car: 91 Formula
Engine: 383 HSR
Transmission: 5th 700R4
Axle/Gears: 3.89
MD your car sounds sweet just like mine except probably in better shape. Post some pics if you can.
3.8 keep us posted on your progress and your new times/dyno #'s
3.8 keep us posted on your progress and your new times/dyno #'s
Member
Joined: Jul 1999
Posts: 202
Likes: 2
From: Melbourne Beach, Florida, USA
Car: 1991 Formula Firehawk (Clone)
Engine: 350 with Firehawk Package
Transmission: 700R4
1991 PONTIAC FIREBIRD FORMULA SLP350
15,340 miles on car and engine
350 cubic inch TPI Engine
Originally ordered with SLP Performance Package rated @ 290 hp
SLP Firehawk T-ram intake manifold
SLP 58mm billet throttle body w/coolant bypass mod
Trick-Flow 23 Degree CNC ported aluminum heads
Crane Gold 1.6 roller rockers
Port matched intake, heads, and throttle body
SLP 51006 Firehawk cam
SLP underdrive crank pulley
SLP stainless steel headers, muffler and 2 on-the-left-exhaust
Dual catalytic converters
3.0" exhaust Pipe/2.5" tailpipes
Accel adjustable fuel pressure regulator
SVO 24# fuel injectors
SLP cold air induction package with K&N Filtercharger
Custom piggyback PROM chip
4 Speed 700R4 transmission
SLP torque converter
SLP shift recalibration kit
3:42 limited slip rear end
Engine oil cooler
Four wheel disc brakes
17" by 9.5" Ronal Firehawk wheels
P275/40ZR17 Goodyear GSC tires
Modified 6 pt. SCCA roll cage
15,340 miles on car and engine
350 cubic inch TPI Engine
Originally ordered with SLP Performance Package rated @ 290 hp
SLP Firehawk T-ram intake manifold
SLP 58mm billet throttle body w/coolant bypass mod
Trick-Flow 23 Degree CNC ported aluminum heads
Crane Gold 1.6 roller rockers
Port matched intake, heads, and throttle body
SLP 51006 Firehawk cam
SLP underdrive crank pulley
SLP stainless steel headers, muffler and 2 on-the-left-exhaust
Dual catalytic converters
3.0" exhaust Pipe/2.5" tailpipes
Accel adjustable fuel pressure regulator
SVO 24# fuel injectors
SLP cold air induction package with K&N Filtercharger
Custom piggyback PROM chip
4 Speed 700R4 transmission
SLP torque converter
SLP shift recalibration kit
3:42 limited slip rear end
Engine oil cooler
Four wheel disc brakes
17" by 9.5" Ronal Firehawk wheels
P275/40ZR17 Goodyear GSC tires
Modified 6 pt. SCCA roll cage
Last edited by jimbo; Jul 11, 2002 at 05:33 AM.
Member
Joined: Dec 2001
Posts: 125
Likes: 0
From: Decatur, AL, U.S.A.
Car: 91' Formula
Engine: 383CID
Transmission: t-56
Axle/Gears: 4.10
Nice cars guys! Mine is a 91' Formula it has Red paint , grey interior, power; windows, locks, mirrors , antenae, and rear hatch. has cruise, tilt steering, reading lamps, ws6 suspension, Drivetrain is L98 Auto with 3.23 posi rear
thanks u all have bute- rides also, but i'm sure u already knew that!!!
we know all about (in time, in time) but sometimes it just moves 2 damn slow!
but one thing MD.. CLEAN THAT DAMN ENGINE!!!!
mine also has power everything,cruise,had c.d tape,lexan t-tops w/locking unit,140 M.P.H, A/C, 1le brakes upgrade, alum L98 heads,WS-6 and some others but drawing a blank..
we know all about (in time, in time) but sometimes it just moves 2 damn slow!
but one thing MD.. CLEAN THAT DAMN ENGINE!!!!
mine also has power everything,cruise,had c.d tape,lexan t-tops w/locking unit,140 M.P.H, A/C, 1le brakes upgrade, alum L98 heads,WS-6 and some others but drawing a blank..
Last edited by ONEFORMULAOVERALL; Jul 23, 2002 at 11:18 PM.
Thread
Thread Starter
Forum
Replies
Last Post
90formulaVortec
Interior
1
Sep 8, 2015 12:42 AM





