adding power to an L27 - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 08-30-2006, 03:59 PM   #11
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in the quest to be the fastest, you have to consider alot of things, Every car is different, and some are faster stock for stock, and im willing to bet you have the 2.84 ratio in your car too, that is a BIG limiting factor for you, that is the slowest accelleration gear ratio avaliable on a Bonne....

you still can have a "quick" L27 with a good tuneup, an intake, and highflow cat.....but if you want fast then Swap OR get a new car.....Because once you have achieved the Speed your looking for, then you have to consider the Suspension to handle the speed
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Old 08-30-2006, 04:04 PM   #12
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Fuel injectors aren't power-adders. That'* something you change when your other modifications cause you to out-flow them.
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Old 08-30-2006, 04:11 PM   #13
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Biggest limiter for me was tires. The best i could ever run was a 2.26, @ 15.99 and I could do it all day long launching at any RPM. Hell, I could light those up until 15-20 MPH depending on road surfaces.

Now with real tires, that have a nifty concept we like to call "traction". I can just fly from a dig.
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Old 08-30-2006, 04:37 PM   #14
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1993 SLE:
Quote:
and im willing to bet you have the 2.84 ratio in your car too, that is a BIG limiting factor for you, that is the slowest accelleration gear ratio avaliable on a Bonne....

you still can have a "quick" L27 with a good tuneup, an intake, and highflow cat.....but if you want fast then Swap OR get a new car.....Because once you have achieved the Speed your looking for, then you have to consider the Suspension to handle the speed
i know how to check the ratio will report back. I might not have it, it can be changed either way no?
this L27 is surprisingly quick (yeah laugh) ive driven a few fast automatic cars.
the car is tuned-up, thats about the first thing i learned from this club
i plan to do the monroe gasmatics in september befoer winter, along with tierods and ball joints.

K i will take down note for the fuel injectors and tires.

once again guys thanks.
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Old 08-30-2006, 05:54 PM   #15
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If you're going Monroe, go Sensatrac if it'* in the budget.

Most L27'* for Bonnevilles are mated to 3.06 ratios. Your car SHOULD be surprisingly quick compared to other 4-door sedans. Even the L27 is known for it'* surprising torque rating off the line.
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Old 08-30-2006, 06:06 PM   #16
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Quote:
Originally Posted by willwren
Most L27'* for Bonnevilles are mated to 3.06 ratios. Your car SHOULD be surprisingly quick compared to other 4-door sedans. Even the L27 is known for it'* surprising torque rating off the line.
I thought only SLE optioned SE'* received the 3.06 where the standard bonneville recevied the 2.84.

Who here has a 3.06 ratio on a non-sle?
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Old 08-30-2006, 06:09 PM   #17
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Quote:
Originally Posted by Hans
Quote:
Originally Posted by willwren
Most L27'* for Bonnevilles are mated to 3.06 ratios. Your car SHOULD be surprisingly quick compared to other 4-door sedans. Even the L27 is known for it'* surprising torque rating off the line.
I thought only SLE optioned SE'* received the 3.06 where the standard bonneville recevied the 2.84.

Who here has a 3.06 ratio on a non-sle?
I Do.... 95 SE without SLE, with Package 1SC.... Somehow I got Buckets with the center console, roof console with Pwr outlet and sunglass storahe along with that cubby hole... Alloy wheels and 3.06 axle ratio

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Old 08-30-2006, 06:10 PM   #18
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Quote:
Originally Posted by jr's3800
Quote:
Originally Posted by Hans
Quote:
Originally Posted by willwren
Most L27'* for Bonnevilles are mated to 3.06 ratios. Your car SHOULD be surprisingly quick compared to other 4-door sedans. Even the L27 is known for it'* surprising torque rating off the line.
I thought only SLE optioned SE'* received the 3.06 where the standard bonneville recevied the 2.84.

Who here has a 3.06 ratio on a non-sle?
I Do.... 95 SE without SLE, with Package 1SC.... Somehow I got Buckets with the center console, roof console with Pwr outlet and sunglass storahe along with that cubby hole... Alloy wheels and 3.06 axle ratio
I know the 2.84 was rare for the l36, I'm talking strictly L27 cars here, 92-94.
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Old 08-30-2006, 06:13 PM   #19
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Quote:
Originally Posted by Hans
Quote:
Originally Posted by jr's3800
Quote:
Originally Posted by Hans
Quote:
Originally Posted by willwren
Most L27'* for Bonnevilles are mated to 3.06 ratios. Your car SHOULD be surprisingly quick compared to other 4-door sedans. Even the L27 is known for it'* surprising torque rating off the line.
I thought only SLE optioned SE'* received the 3.06 where the standard bonneville recevied the 2.84.

Who here has a 3.06 ratio on a non-sle?
I Do.... 95 SE without SLE, with Package 1SC.... Somehow I got Buckets with the center console, roof console with Pwr outlet and sunglass storahe along with that cubby hole... Alloy wheels and 3.06 axle ratio
I know the 2.84 was rare for the l36, I'm talking strictly L27 cars here, 92-94.
A lot of the SE Bonneville had the 3.06 ratio... I believe if it has the Alloys from the factory it will have the 3.06 ratio... I think the alloys were part of the package that included the 3.06 ratio

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Old 08-30-2006, 06:15 PM   #20
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94BonnieSE,

Do us a Favor and look on the Spaer tire cover and tell us if you have F17 + 2.84 or FW2 = 3.06...

Judging by the Wheel covers I'm going to guess 2.84, but we have seen stranger..

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