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CompCams Xtreme Cam

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Old Mar 31, 2001 | 09:16 PM
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From: Annandale,NJ
CompCams Xtreme Cam

Will this work with a TPI setup, like, just work, I have seen it with 3rg gens but i don't know if they were carbed or not??
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Old Mar 31, 2001 | 09:17 PM
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why do i keep getting 2 posts even only when i click once??
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Old Mar 31, 2001 | 09:24 PM
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From: Springfield, MO, USA
Car: 1986 Trans Am, 1991 Firebird
Engine: 355 TPI, 3.1L V6
Transmission: 700R4 in both
TPI likes to have a 112 or 114 LSA and the Xtreme Energy cams are ground on a 110 LSA BUT you can have ANY cam that comp makes ground on to a 112 or 114 LSA for a price! I'm gonna get an XE262 cam ground on a 112 or 114 LSA for my 355 TPI engine!!
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Old Mar 31, 2001 | 09:40 PM
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i thought you have to have a computer cam for a computer car.
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Old Mar 31, 2001 | 09:43 PM
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From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
If you get a custom chip burned, it doesn't matter what cam you use, the chip will be tailored to the motor.
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Old Mar 31, 2001 | 10:03 PM
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From: Annandale,NJ
gotcha
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Old Mar 31, 2001 | 10:05 PM
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From: Springfield, MO, USA
Car: 1986 Trans Am, 1991 Firebird
Engine: 355 TPI, 3.1L V6
Transmission: 700R4 in both
<font face="Verdana, Arial" size="2">Originally posted by 89gta383:
If you get a custom chip burned, it doesn't matter what cam you use, the chip will be tailored to the motor.</font>
Ok, this is what I've been told!! You can't use a cam with a duration over 220 with a STOCK computer!! If you look at all the compu cams you'll see that NONE of them that are made for STOCK computer have greater than a 218 duration @.050!!! Also, if you look....all of the compu cams have a 112 or 114 LSA...EXCEPT the smallest compu cam which still has a 111 LSA!! The one compu cam I'm looking at right now that was made for a MODIFIED computer TPI engine has a duration of 222/226 and is ground on a 114 LSA!! So this is what I figure....the XE262 cam only has a 218/224 duration and even a slightly smaller lift than that compu cam....SO if I get the XE262 cam ground on a 114 LSA and buy an aftermarket chip from Ed Wright (www.fastchip.com) it should work just fine in my 355 TPI engine!!

Now the advantage I see to going that route rather than buying the 222/228 compu cam is that the compu cam runs 1800-5800 RPMs so you would need at least a 2000 rpm stall! The XE262 on the other hand runs 1300-5600 RPMS so no stall will be needed therefore saving you money....especially if you have a 700R4 because those stalls cost a pretty penny compared to the TH350 stalls!! Also, TPI produces a lot of low end torque and cuts off earlier than most carbed engines so I see the 1300-5600 as another advantage because you're getting power and low-end torque all at the same time and on a TPI engine you probably won't get over 5600 RPMS very often anyway and if you do I wouldn't hold it there long!

Just my theory there! We'll see the theory in motion soon hopefully!!
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Old Mar 31, 2001 | 10:57 PM
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I'll second that, you can use whatever cam you want if you use a custom chip. A cam with 224 duration on the intake side will work with the stock chip and stuff though, although I wouldnt advise it. You can get much better driveability and power with a custom chip at that point.
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Old Mar 31, 2001 | 11:15 PM
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From: Annandale,NJ
how much are chips??
-Tom
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Old Apr 1, 2001 | 01:12 AM
  #10  
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From: Springfield, MO, USA
Car: 1986 Trans Am, 1991 Firebird
Engine: 355 TPI, 3.1L V6
Transmission: 700R4 in both
<font face="Verdana, Arial" size="2">Originally posted by camaro6spd:
how much are chips??
-Tom
</font>

Well I'm sure everyone else will recommend learning to burn your own to save a little money but if you don't have the patience, like me, then you can go the "pre-burned" route!!

Ed Wright will actually burn a "custom" chip specifically for your car for $350! BUT you can also buy "pre-burned" Ed Wright custom chips for $159 which is the route that I'm going since the cam isn't that large!! The website is http://www.fastchip.com and the chip even comes with a guarantee!!
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Old Apr 1, 2001 | 12:43 PM
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From: Chander, Arizona USA
Car: 2006 Silverado 1500
Engine: 5.3L
Transmission: 4L60E
what needs to be pointed out here is there is no magic number for cams. the larger cubic inch engines such as 350, 377, 383, 406, etc., allow for larger cams than smaller just from amount of air coming in. installing a stock LT1 cam isn't much of an improvement. they only worked ok in an LT1 due to the intake design matching the cam better than a tpi set up. as for the 305 that went slower with the larger cam, you need to see just how much of a difference you went. with that much of a cam change, your going to have to get more fuel in there along with it and some other area's capable of flowing the air the cam move's. another thing to consider is compression. more compression means more cam. an 11.0 to one engine will respond to a 230@.050 as a 9.5 to one will respond to a 220@.050. it's all about a whole combination of parts. you can't just stab a large cam in a stock engine and expect a miracle and a built engine with too small a cam gets bad results also. speed density engines can be a bit more sensitive due to vacuum readings, but can be tuned to work just fine without a complete change of system.
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