adding power to an L27 - Page 7 - 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 09-02-2006, 05:09 PM   #61
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Quote:
Originally Posted by 94bonni
i have a se non sle package with the 3.06
ok......and???

you could get the 3.06 with both the SE and the SLE
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Old 09-02-2006, 06:27 PM   #62
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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?
This is why he mentioned it.
Just helpin out Hans, thats all
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Old 09-02-2006, 09:10 PM   #63
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2.84 + L27 = 17 second car at best. :(
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Old 09-04-2006, 09:23 PM   #64
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We are talking a modded car, not stock. For a N/A L27 to be quick you are going to have to make the thing breath better to help with power in the upper RPM. You can't just say the power is all low RPM and just focus on that.
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Old 09-04-2006, 09:35 PM   #65
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Maintence and airflow.

MAF Mod TB, Ricer pipe, Hi flow cat, Port-matching.
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Old 09-05-2006, 11:03 AM   #66
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Quote:
Originally Posted by llBlazin_llLo
We are talking a modded car, not stock. For a N/A L27 to be quick you are going to have to make the thing breath better to help with power in the upper RPM. You can't just say the power is all low RPM and just focus on that.
It does make sense, when the new cam is in with the more agreesive grind, the engine vacuum should be able to pull more no?.. hence the need to upgrade the axhaust tubeing with more than just a highflow cat, maybe upgrade to 2.5" tubes all round?

any comments , ideas??
thanks
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Old 09-05-2006, 01:56 PM   #67
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Vacuum pump on an L27 perhaps?
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