Comp 272 Cams No Lope?

[GrimGST]

Other then saying that I don't have cams, what would be the reason I have little to no lope? Does exhaust play a part? I have a 3 inch turbo back with a resonator stock injectors flashed ecu big 16g built head and block. And at idle get about -20 vacuum

 

[gsxnate99]

I have a set f comp 101200 cams and they are pretty lopy. What is your idle set at. Higher idle less lop but if its too low the car will also want to stall out

 

[idkiliketurbos]

From my research, the Comp 101200's (FP2) are not known for being a lopy cam. I have them in my car and would say that I can tell a little difference from stock, but not very much. I haven't gotten my car boost leak free yet or tuned the idle, but I don't really notice any idle difference.

 

[compression]

i have comp 101202 cams, there is extremelylow to little lope, im not 100% sure why.. Maybe try and degree them? Adjust the cam gears if you have that option.

 

[4seasons69]

It could just be the way the cams are in your particular setup. In my old talon I put a set of bc272 in it and did not have them degreed and it didn't hardly have any lope

 

[compression]

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Click image for an idle video from a few months ago.

 

[GrimGST]

I have stock cam gears so it can't be degrees right? I will also put up a vid of the idle tonight, it idles at 750rpms. My tuner tuned the car to make it a Lil more lopey. My vacuum should be higher or lower from stock after cams/built head ?

 

[compression]

Most likely lower. Its normal.

 

[BogusSVO]

20 inches of vac is alot, around stock. Big cams will decrease vac readings.

Hummm... Interesting.

After checking the cam cards at FP
http://store.forcedperformance.net/...roduct_Code=FPCamExh&Category_Code=DSM-Engine

And checking the Comp cams Catalog.
http://www.compcams.com/Company/CC/Catalog/COMP/Default.aspx

Page 252 for the 4g63

The only cam I can find having close to a 272 duration is the 101FP4R with 270* at .004 lift

So, pull your Valve cover off and look for the part number etching on the cam, or look just behind the #1 cam journal for a large cast letter on the cam, if you have a letter then you have stock cams.

http://www.dsmtuners.com/forums/cyl...5135-camshaft-identification-information.html

 

[BCDSMatt]

I would highly recommend adjustable cam gears anytime you upgrade. Most cams need to be degreed.