gas milage of a 91-92 Z28
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Junior Member
Joined: Oct 1999
Posts: 66
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From: regina, sask, canada
gas milage of a 91-92 Z28
i was going to buy and 91-92 Z28 and i was wondering what kind of gas milage to expect from the two engines(305 and 350), and what kind of performance figures i can expect
Senior Member
Joined: Nov 2000
Posts: 762
Likes: 2
From: Riverside, CA
Car: 1987 Camaro IROC-Z
Engine: 305TPI
Transmission: 700R4
my '87 305 gets 18mpg in town and 24 hwy cruising at 70mph with 3.23 rear gears (GU5 RPO code)
350 is comparable, 350 is much faster than the 305.. almost 1/4 more hp
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Webmaster: www.IROC-Z.org
350 is comparable, 350 is much faster than the 305.. almost 1/4 more hp
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Webmaster: www.IROC-Z.org
Member
Joined: Mar 2001
Posts: 294
Likes: 0
From: Indianapolis, IN
my 350 gets about 20mpg with my mods. about 50/50 city/hwy Doug
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Central Indiana Camaro Club member since Oct. 2000
1991 Z28 - 51,000 miles.
All power options leather. 350 TPI:
K&N; Airfoil; Custom 'Ram-Air'; Slp Runners;Poweraid TB spacer;
Fastchip;
SLP Headers; Borla Catback 50% open; Dual factory Cats;
March underdrive pulleys;
Accel Extreme 9000 wires, Accel coil; Hypertech rotor & cap; NGK platinum plugs;
Manual fan switch;
TB coolant bypass; smog pump delete
Pirelli P7000 Z245/50/R16 all season tires;
Energy suspention motor mounts
S Cobra Radar Detector; Z28 SS Floormats;
Technalon IV car cover (now on my dad'a 2000 Berger SS).
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Central Indiana Camaro Club member since Oct. 2000
1991 Z28 - 51,000 miles.
All power options leather. 350 TPI:
K&N; Airfoil; Custom 'Ram-Air'; Slp Runners;Poweraid TB spacer;
Fastchip;
SLP Headers; Borla Catback 50% open; Dual factory Cats;
March underdrive pulleys;
Accel Extreme 9000 wires, Accel coil; Hypertech rotor & cap; NGK platinum plugs;
Manual fan switch;
TB coolant bypass; smog pump delete
Pirelli P7000 Z245/50/R16 all season tires;
Energy suspention motor mounts
S Cobra Radar Detector; Z28 SS Floormats;
Technalon IV car cover (now on my dad'a 2000 Berger SS).
Senior Member
Joined: Oct 2000
Posts: 822
Likes: 0
From: Tac. Wa. USA
I get about 13 MPH 
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1986 SC Camaro
Mods: Threw 2.8 in garbage, put in rebuilt
350 .060 over, XE268H Comp cam, Edlebrock
Performer Intake and Edlebrock 600 CFM Carb,
Pete Jackson noisy GearDrive (which sounded
cool for about 5 minutes, now I'm sick of it)
Rebuilt TH350, 3.42 Rear Gears. LCA RLB's.
[This message has been edited by bhaas (edited May 04, 2001).]
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1986 SC Camaro
Mods: Threw 2.8 in garbage, put in rebuilt
350 .060 over, XE268H Comp cam, Edlebrock
Performer Intake and Edlebrock 600 CFM Carb,
Pete Jackson noisy GearDrive (which sounded
cool for about 5 minutes, now I'm sick of it)
Rebuilt TH350, 3.42 Rear Gears. LCA RLB's.
[This message has been edited by bhaas (edited May 04, 2001).]
Senior Member
Joined: Jul 1999
Posts: 677
Likes: 0
From: Danvers, MA, USA
The 305 TPI auto runs low 15s... the 5 speed with the G92 option (better gears and dual catalytic converters) runs mid/high 14s... the 305 TPI 5 speed with a single cat runs about 15 flat... the 350 TPI automatic runs low/mid 14s. Basically in 90-92, the 350 TPI is about a second faster in the quarter mile than the 305 TPI auto.
HP:
305 TPI auto/non G92 5 speed:205
305 TPI 5 speed G92: 230
350 TPI auto: 245
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91 Trans Am WS6
Bright White
5.0 TPI auto
Flowmaster 3" 2 chamber catback
Trans Go shiftkit
2000 stall converter
Built on Wednesday
HP:
305 TPI auto/non G92 5 speed:205
305 TPI 5 speed G92: 230
350 TPI auto: 245
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91 Trans Am WS6
Bright White
5.0 TPI auto
Flowmaster 3" 2 chamber catback
Trans Go shiftkit
2000 stall converter
Built on Wednesday
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