Need more HP out of a 1999 L67 motor - Page 3 - 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 02-14-2006, 12:02 AM   #21
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Quote:
did a [email protected] with a 2.24 60', stock no track prep. If I get my 60' down to 2.1, I would be in the 14.3 range
I agree.

I think you keep you're engine free of carbon with all you'rre highway driving. If I get my rockers installed and drive to LA, a good 900 mile drive. I'll run her at sea level. Shell get high 13'* even without a DHP. I'm sure shell be carbon free by then.
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Old 02-14-2006, 04:00 PM   #22
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Quote:
Originally Posted by sonoma_zr2
I did a [email protected] with a 2.24 60', stock no track prep. If I get my 60' down to 2.1, I would be in the 14.3 range
you said it... i would be at 14.3, lets try it this summer and repost here.(no offence here im just curious to know how 2 car ending with same top speed and have the same 60 foot will end .3 in difference)
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Old 02-14-2006, 04:42 PM   #23
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Quote:
Originally Posted by mike_peperni
Quote:
Originally Posted by sonoma_zr2
I did a [email protected] with a 2.24 60', stock no track prep. If I get my 60' down to 2.1, I would be in the 14.3 range
you said it... i would be at 14.3, lets try it this summer and repost here.(no offence here im just curious to know how 2 car ending with same top speed and have the same 60 foot will end .3 in difference)
The cars have a different powerband. Therefore the one that runs .3 quicker might get to 70 a lot sooner than the other car and then fall on its face and take forever to get the other ~25mph. Since it gets to 70 quicker it is making better time than the other car which might be going 60 at that point and then the other car wakes up and pulls harder on the topend. (obviously this is an extreme example and the numbers wouldn't work out like that, just trying to make it easy to understand)

Shawn
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Old 02-14-2006, 06:43 PM   #24
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, i understand that, but its 2 L67. Anyway... no problem, back to main subject.
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Old 02-15-2006, 09:34 PM   #25
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you can do:

headers
intake
Throttlebody
smaller pulley
colder plugs
intercooler
rockers

you can use the stock catback with headers and should be fine. you just need to scan and see if you are getting KR
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Old 02-15-2006, 10:17 PM   #26
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Alright guys I will need help with understanding all this. What do you mean by colder plugs, I have been around cars for a while but not these new ones. Where can I find the colder plugs and where can I find a smaller Supercharger pulley??? Would I also be able to put a cold air intake on it???? This is all new to me since this is the first supercharged car I have had.

Another question I was wondering if I did a cat back exhaust would I be able to make it dual exhaust??

Thanks guys I need all the help I can get.

A.J.
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Old 02-15-2006, 10:22 PM   #27
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Colder plugs: spark plugs have different heat ranges, the more post you have the more detenation you get (KR). putting in colder plugs allows you to run more boost.

check out www.zzperformance.com www.intense-racing.com all of them sell cold air kits along with plugs and most parts will need

i am sure you can make it a dual split exhaust although sometimes that makes more back pressure at the split. you can do anything with time and money.
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Old 02-15-2006, 10:27 PM   #28
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NGK tech-talk faq is in Techinfo for the plug question.

Only a GP FWI intake will work on an H body. A CAI setup will have to be modified from the GP application, or totally custom like most of us do.

FWI is not preferred in the 87-99'* due to the configuration of the fender skirting. It'* a good option for the 2000 and newer though.
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Old 02-16-2006, 01:20 AM   #29
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Quote:
Originally Posted by willwren
FWI is not preferred in the 87-99'* due to the configuration of the fender skirting. It'* a good option for the 2000 and newer though.
I disagree
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Old 02-16-2006, 02:09 AM   #30
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I wonder what a FWI would be like on my car compared to an 96-99 SSEi.
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