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2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 02-19-2004, 01:12 PM   #11
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I guess every car acts differently, since every SC is different. Whatever works with your car works. You just have to experiment.
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Old 02-19-2004, 01:23 PM   #12
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yes thay are, my car is different because it
can go 120+ in third gear and i like THAT..
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Old 02-19-2004, 02:50 PM   #13
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Quote:
Originally Posted by rrounds
yes thay are, my car is different because it
can go 120+ in third gear and i like THAT..
I still find this very hard to believe on a stock PCM. Do you have a scanner or something to verify this with? I am really interested to see this. Are you leaving it in manual 3 when do this or in D? Not trying to flame here, just very curious.
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Old 02-19-2004, 02:59 PM   #14
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Quote:
Originally Posted by PontiacDad
6PK1815 Gatorback SC Belt will work for 3.1 to 3.5, about $25.
Where can i buy these belts? I am having trouble finding anywere both local and web.
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Old 02-19-2004, 03:12 PM   #15
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Quote:
Originally Posted by SlamKing18
Quote:
Originally Posted by PontiacDad
6PK1815 Gatorback SC Belt will work for 3.1 to 3.5, about $25.
Where can i buy these belts? I am having trouble finding anywere both local and web.
www.intense-racing.com has them

GB6-715 for 3.4
710 for 3.2
705 for 3.0
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Old 02-19-2004, 03:15 PM   #16
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Also. Would I be better off to get different spark plugs to reduse KR??? I keep hearing all of you guys talk about getting colder plugs... Please explain.. What are the factory plugs and how do I know what to get different?

I saw in 3800performance.com'* site they say:

"- Use NGK TR55'* (one heat range colder) if your car is similarily modded like this: has a 3.40" supercharger pulley, CAI (cold air induction) setup, and a lower-temp thermostat.

- Use NGK TR6'* (two heat ranges colder) if your car is similarily modded like this: has a 3.25" supercharger pulley, 1.80:1 or 1.90:1 rocker arms or very mild cam, CAI setup, lower-temp thermostat, exhaust headers, cat-back exhaust system, and reprogrammed PCM."

My car looks to fit in the TR55 category except I will be getting a dhp pcm in the next month.. and I am considering the 1.9:1 rockers too.. So what should I do? Also, i guess our cars are factory 1.6:1 rockers.. can these motors take that much of a change (1.6:1 up to 1.9:1) without any mods what-so-ever to the heads, valve covers, etc?
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Old 02-19-2004, 04:15 PM   #17
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stock pcm ? YES
gear selector in third 108 max
gear selector in D 120+ but the
transmission is still in third around 46 or 4800 rpm
drop down to why why why and take a look
P. *. if this ( my PCM ) is broke i don't want it fixed.
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Old 02-19-2004, 04:19 PM   #18
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Quote:
Originally Posted by SlamKing18
Also. Would I be better off to get different spark plugs to reduse KR??? I keep hearing all of you guys talk about getting colder plugs... Please explain.. What are the factory plugs and how do I know what to get different?

My car looks to fit in the TR55 category except I will be getting a dhp pcm in the next month.. and I am considering the 1.9:1 rockers too.. So what should I do? Also, i guess our cars are factory 1.6:1 rockers.. can these motors take that much of a change (1.6:1 up to 1.9:1) without any mods what-so-ever to the heads, valve covers, etc?
Getting colder plugs is one way of helping to reduce KR, but you don't want to just throw really cold plugs on the car with little mods because driving around normally you would foul up the plugs and get worse gas mileage. I would recommend 1 or two range colder plugs. IIRC the TR55'* are one range colder, so that would definately be a good plug to change to.

As for the 1.9 rockers, the engine can handle it just fine with completely stock heads. I don't recommend it if you are going to be revving it high all the time, but it should be just fine. We ran 1.9:1 rockers in the GTP with completely stock heads up until it ran a 12.78, then we put in stronger springs & different retainers, and it is just fine. (we had to remove the stock springs because the car got valve float above about 5900 rpm) Our SSEi however has completely stock heads and 1.9 rockers and it has been just fine. It has been that way for about 25,000 miles. It still has the stock PCM so it never shifts higher than 5800rpms, so valve float is no problem. However, if you are planning on getting a DHP, you will be shifting at ~6000rpms so stronger springs would be a good idea to try to rid of valve float.

Just my opinion though.

Hope that helps.

Shawn
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Old 02-19-2004, 05:36 PM   #19
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That does help alot, thanks

But what I am trying to understand is whether I should go one or two heat ranges colder???

by the description in 3800performance.com'* site, I am probably going to be inbetween.
I will have a 3.4" pulley, CAI, DHP pcm for sure and I am considering the 1.9:1 rockers and some exhaust work maybe down the line.
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Old 02-19-2004, 07:05 PM   #20
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Well if you can't decide between one and two ranges colder, go one and a half ranges colder. The AC-Delco 41-919 plug is 1.5 ranges colder than stock, and in my opinion is a VERY good plug. We ran it in the GTP from when it had the 3.25" pulley all the way down until its current state. We actually ran the GTP with those plugs and a 2.45" pulley and had no problems. Now we run 3 range colder plugs, but that was just an experiment, and is now to help with the added timing it is going to get this year. But for you, I think the 41-919'* would be a PERFECT choice.

Shawn
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