the pulley i want to get, one problem, wat belt? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 12-02-2007, 03:06 AM   #1
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Default the pulley i want to get, one problem, wat belt?

IMP-xx0 Individual Pulleys for the INTENSE™ Modular Pulley System
$59.99
Pulley_Size: IMP-300

it wont let me copy n paste the page, this is the info on the pulley, oh ill copy a picture tho.

http://www.intense-racing.com/Mercha...ulley_larg.jpg
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Old 12-02-2007, 03:34 AM   #2
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You can run an oversized idler pulley & a stock sized belt which would give you more belt wrap on the pulley (but slip shouldn't an issue at all with a 3.4"). But to answer your question the belt is # 4060715.


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Old 12-02-2007, 03:40 AM   #3
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kool, but i wanna try and get it to a 3.00 if possible, that picture is of a 3.40 yes, but i wanna get a 3.00 is this possible?
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Old 12-02-2007, 03:45 AM   #4
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Quote:
Originally Posted by MadMike
if possible
Anything is po$$ible; it just depends if the wallet can keep up. I once started with a 3.4" & now 2 motors and 1 transmission later I have a few smaller pullies laying around


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Old 12-02-2007, 03:49 AM   #5
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but i can put a 3.00 on the stock SC correct? cuz if thats the case its less than 100 for the pulley and belt together
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Old 12-02-2007, 04:04 AM   #6
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Quote:
Originally Posted by MadMike
but i can put a 3.00 on the stock SC correct? cuz if thats the case its less than 100 for the pulley and belt together
A 2.8" will fit on the snout of the SC without turning it down to accept smaller. But I would recommend 3.4" be the smallest you run with premium fuel till you scan for KR and add mods which will allow you to run smaller pullies.


You can only force so much air into your motor before you need to allow it to breathe better with things like rockers/cam/headers & porting/polishing.

If you plan to get to a 3.0” it would be good to invest in a scanner sooner then later.

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Old 12-02-2007, 08:20 AM   #7
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I would recomend you go no smaller then a 3.4, a 3.5 would be a better choice. I run a 3.4 on my car and had a fair amount of KR. Upgrading your PCM will help, the performance shift kit from intense really had a difference. If you add a 3.0 you will get a lot of KR, from what I've heard you loose 5hp for every degree of KR. If you change your cam or put in 1.9:1 rockers and do something with your exaust, PEMs or headers you can get closer to that size.
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Old 12-02-2007, 10:56 AM   #8
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i would NOT go lower than a 3.5 with out a PCM.....i have a custom tune, and cant get rid of my KR with a 3.4....yet.....but i need more time to tune....

with that being said, and knowing other 03'* as well (they typically run lean from the factory at the higher RPM'* and the fuel trims are way out of wack) the 3.5 and maybe even a 3.6 would be the best bet
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Old 12-02-2007, 11:03 AM   #9
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A 3.0 is going to be far to small for your car until you have done a considerable amount of modification. Basically, you'd be trying to cram in more air than your motor can deal with.
A 3.4 may actually be just a little small too. I would recommend that if you go with the 3.4, you consider also installing a cold air intake, such as INTENSE'* fenderwell intake. That will help some with any KR you run into.

EDIT, I see the cone filter in your sig, is it heat-shielded? If so, that'* fine. If not, then you still need to either shield it or get that FWI. High intake air temps, from sucking air from the engine bay, contribute to KR.
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Old 12-02-2007, 02:54 PM   #10
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yes, i made up a custom heat shield, it works well, i noticed the difference in how the car runs.
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