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PostPosted: Wed Oct 11, 2017 6:01 am 
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Joined: Tue Jun 06, 2017 8:43 pm
Posts: 14
Location: Vancouver Wa
Year and Trim: 2000 SSEi
RIP 2001 SSEi
I came across ZZP's gear ratio conversion kit and was wondering if anyone has done it. I couldnt find any mention of it and I recently came across it. The reviews are good. Adds more torque to the car and produces good launch from what I've read. Also heard that changing to a higher gear ratio like that would make gas mileage worse, afterall its only got 4 gears. So if thats true and gas mileage takes a significant hit, would be a terrible fit for my daily drive. Also would love to know how difficult the job would be to do it.

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PostPosted: Wed Oct 11, 2017 9:21 pm 
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Location: MN/IA
Year and Trim: 09 Denali
It's not worth it on a daily driver. ZZP's kit is basically all parts you can get at a junkyard, plus maybe some gaskets and stuff.

Yes, your fuel mileage would drop, because it's putting a lower ratio (higher number) gear into your car. It makes your 2.93 final drive ratio a 3.29 final drive ratio. Better for your launch, but increases engine RPM at any given MPH.

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PostPosted: Thu Oct 12, 2017 8:12 pm 
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Joined: Thu May 22, 2008 10:08 pm
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Location: Detroit, MI
Year and Trim: 1996 Bonneville S/SE
I currently have 3.29s in mine. I am heavily modded but I am still getting 16-18 at 55 to 60mph average.

*Edited for spelling

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INFO FOR CONVERTING SE TO SSE BODY HERE=>>http://www.pontiacbonnevilleclub.com/forum/detailing-appearance/topic39372.html
http://www.pontiacbonnevilleclub.com/forum/performance-brainstorming/topic43633.html
2002 Pro Stock Pontiac Firebird**GM 399 Splayed Valve Engine
1996 Pontiac Bonneville SE/SSE **100% Transformation from SE to SSE Complete**Lowered 2.00inches too**


Last edited by Speedster400 on Fri Oct 13, 2017 5:22 pm, edited 1 time in total.

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PostPosted: Fri Oct 13, 2017 9:32 am 
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Joined: Mon May 10, 2010 6:11 pm
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Location: Chicago, IL
Year and Trim: 2003 SLE
As Ed said, this is stuff you can get from the junk yard, but even then I don't know if I would call the effort or time worth it.

You can do other mods that would increase both power and fuel efficiency, providing you keep your foot out of it... ;)

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