1/4 time for stock LO3 5 speed.
03-13-2006, 07:45 PM
#1
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1/4 time for stock LO3 5 speed.
I have a 91 firebird LO3 5 speed the car pretty much stock except for flows, edelbrock ari cleaner and a Jet chip.
I know this question has been asked before about the automatic LO3 but My questions is does anyone know what a 1/4 mile time would be for a stock LO3 5 speed? and how much do the mods that i mentioned above help the cars et time if any? thanks in advance.
I know this question has been asked before about the automatic LO3 but My questions is does anyone know what a 1/4 mile time would be for a stock LO3 5 speed? and how much do the mods that i mentioned above help the cars et time if any? thanks in advance.
03-13-2006, 08:37 PM
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Car: 78 Caprice Coupe
Engine: 355
Transmission: 4L60
Axle/Gears: 3.42
Really depends on how well you can shift and launch with a standard trans. Those mods won't do much, I haven't heard anything good about a jet chip... actually I think I've heard people say to ditch it but who knows. I'd bet you'd run about the same as any of the other stock L03 times.
03-13-2006, 11:46 PM
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Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
I've got a Camaro convertible 5speed, so it's a bit heavier than yours would be. I had an open element and I think 3.42 gears at the time and ran a 15.7 at maybe 87 or 88 IIRC, was also on a super hot day, with good shifts. I'd think in perfect conditions you could hit low to mid 15's.
03-14-2006, 10:28 AM
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hmm
My last bird was an 89 LO3 auto and it was much slower than my 91 LO3 5 speed in stock form, as far as the chip goes i can definitly feel an improvment.
03-14-2006, 10:59 AM
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Low 16's to high 15's is the norm. A good running car with good driving should yield better results. 90RS305 can a 15.3 bone stock with his LO3 car.
03-14-2006, 08:46 PM
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Car: 91 Camaro RS
Engine: 305 TBI (L03)
Transmission: T5
Axle/Gears: 3.73 Truetrac posi
I ran a 15.5 last fall (temp was pretty cool) with a mostly stock L03 w/ T5 manual trans. At the time it had open element, headers and cat back with base timing advanced 3*. I could probably have run a bit faster with better shifting. Since then I've swapped out the 3.08 open rear end with a 3.73 posi and began my own chip burning to optimize the tune. Based on A-B comparison with gtech I've improved about .5 sec with gears and tune so far, so I should break into the 14's when the track opens this spring.
03-14-2006, 08:50 PM
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by 91RockS
so I should break into the 14's when the track opens this spring.
so I should break into the 14's when the track opens this spring.
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03-19-2006, 04:25 PM
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wow
Originally Posted by 91RockS
I ran a 15.5 last fall (temp was pretty cool) with a mostly stock L03 w/ T5 manual trans. At the time it had open element, headers and cat back with base timing advanced 3*. I could probably have run a bit faster with better shifting. Since then I've swapped out the 3.08 open rear end with a 3.73 posi and began my own chip burning to optimize the tune. Based on A-B comparison with gtech I've improved about .5 sec with gears and tune so far, so I should break into the 14's when the track opens this spring.
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