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Which cam to go with for a D1SC

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Old 08-12-2007, 02:52 PM
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Default Which cam to go with for a D1SC

i am new to the FI scene and I was thinking of going with a Z06 cam but was just curious if a cam designed for a supercharger would yield a higher gain. My current setup up is prc stage 1 ls6 heads with a torquer 3 cam lts ,ory pipe, lm1, fast 90/90. I only want to do one cam swap and i will want room to upgrade as I will be forging the motor and cranking up the boost, also I dont want a monster cam as I would like a somewhat sleeper and very streetable car.
Old 08-12-2007, 04:14 PM
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The car would be far more streetable with the D1SC and Z06 cam. Are the heads milled? As long as the compression isn't too high, it would be ok. The D1SC will also have alittle blower whine, but still more stealthy than a Torquer 3 cam.
Old 08-12-2007, 06:32 PM
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I am using the LG G5XB cam and am very happy with it.
Old 08-12-2007, 08:20 PM
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a lingenfelter gt2-3 is a good cam for FI.

EPP makes a larger cam for FI, but I wouldn't use that cam unless you are goign bigger cubes.
Old 08-12-2007, 08:33 PM
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no the heads are not milled and i believe my compression is 10.5 to 1. FRCBobby, how is the driveability with that cam and does it have a choppy idle?

I heard that the Z06 cam was a good blower cam but will I have a problem hitting 700+ rwhp with it or should i use a slightly more aggressive cam?
Old 08-12-2007, 08:48 PM
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Since I have to pull the motor to forge it, I may put a 408 instead of the 346, but if 700rwhp on pump gas is achievable with the 346 then I will stay that route
Old 08-12-2007, 08:56 PM
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700 hp with a 346 is definatly possible, check out EPP's web site and look at their customers cars.

But if you are going to pull the motor and build a new one might as well get some more cubes, and 700 will be a lot easier, and last longer if built right.
Old 08-12-2007, 09:01 PM
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If I go with a 6.2 liter motor can I reuse my stock crank and just buy forged pistons and rods? I heard that the stock crank can handle 1000fwhp. and if I use the stock crank how many cubes would that give me.
Old 08-12-2007, 09:28 PM
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the stock crank is a stout piece from the factory, I would only use it if staying 346. If going to a bigger motor just spend the money to get a new crank to use the block to its fullest.

I know you can use the crank in a 6.0 block but don't know about the 6.2.
Old 08-13-2007, 04:22 AM
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The driveability with the XB is fine. The duration is suppose to be upper 220/low 230 with lift around 580 on a 115lsa. That is the close specs that LG would give me, so it basicly looks like it is really close to there G5X1 with more LSA. You can definitely tell there is a cam in there but it is very tame driveability wise.

The LS6 cam makes good power with FI, but you will probably end up wanting more if you use it, that is what happened to me.
Old 08-13-2007, 02:16 PM
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FRCBobby, what kind of power were you making with the stock LS6 cam, and how much PSI were you pushing?
Old 08-14-2007, 06:05 AM
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Originally Posted by black01_WS6
700 hp with a 346 is definatly possible, check out EPP's web site and look at their customers cars.
I agree, take a look at this car.
http://www.exoticperformanceplus.com...Car.php?car=40 Bob
Old 08-14-2007, 09:48 AM
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HPE has an FI cam that has been making great power on some GTO's and Vette's....Its a 235/242 647/610 115LSA. Last automatic 04 ls1 gto made 550rwhp with cam headers and a P1sc running 6lbs. Thats impressive!
Old 08-14-2007, 10:05 AM
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Originally Posted by black01_WS6
a lingenfelter gt2-3 is a good cam for FI.

EPP makes a larger cam for FI, but I wouldn't use that cam unless you are goign bigger cubes.
The big EPP cam works fine for me in a 347, depends if you want the lope or not or dont mind losing low speed tractability. I find it really calmed down my head gasket issues, but it certainly isnt stealth even though at 12:1 a/f at idle with 30 degrees of timing it sounds pretty tame in mine.

OTOH I also did very well with a Z06 cam (9.40s @ 145), all depends what you are looking for. Z06 cam idles like stock, is easy on valve train parts (918s will last forever) and will certainly make some serious power with the blower. I was about at the limit of it though where throwing more boost at it wasnt doing anything (17psi or so).
Old 08-14-2007, 10:44 AM
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kp, when you say that it calmed down your head gasket issues, what problems were you having and how did the cam help to eliminate it? OHH and 9.40's on a Z06 cam is NUTS!!!
Old 08-14-2007, 11:02 AM
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Thats an 01 z06 cam at that, '02 Z06 or the small lingenfelter cam would have done a little better.

Bigger cam eases up on the mid range cylinder pressure some, while it has hurt my 60 foots some, the ET and MPH and picked up overall so its a wash. But (knock on wood) the same head gaskets have been in the car all year. I was pushing about a quart here and there with the old cam/D1 (222/228) and was enjoying some spectacular wheelstands/60 foots but as soon as I swapped cams no more pushing water, even with the F1A pullied up.

Time will tell though, still not sure if I liked the big hit off the line or the power really coming on hard 30-40' out more. I'm never to confident about the head gaskets so I dont like to say anything really fixes it just yet. But a cam swap takes a couple hours and a cam doesnt cost much so I like to experiment a little.
Old 08-14-2007, 11:11 AM
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At what horsepower/PSI do you start to push water? Does this cause a real problem? Also what head gaskets are you using?
Old 08-14-2007, 11:14 AM
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I think to go to the canmotion company
Old 08-14-2007, 11:22 AM
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Probably about the 800fwhp mark is where the water starts moving, but its been pretty solid now. The AFR heads really helped out over the Darts I had on it the most I would say, most people wouldnt even know they were pushing any water but I keep a real close eye on it and have it pretty figured out by now, even made a little hand pump to pump the water from the overflow back onto the radiator in about 20 seconds if I need to between rounds if I dont have any time but i havent needed it in a while.

Its not really hurting anything even if it does, never actually blew a gasket, got any water in the oil/combustion chamber or leaked a drop of water on the track, I dont like it but what can you do. For most people it isnt a concern, even if you do push a little in a street car after a couple cool downs it goes back into radiator.

GM MLS gaskets is what I have been using, waiting to see some results from the new fel pros.
Old 08-14-2007, 11:23 AM
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Z06 will work great for your goals...

If you are building the motor spring the cash for a 4 inch stroke crank and keep the cam fairly mild, comp in the 9:1 range.

You can build a solid 402 LS2 or iron block motor cheaply and run something super streetable like a 226/234 115LSA cam and idle near stock and make 700RWHP easily...

I'd also sell the FAST 90/90 and go with a stock LS6 intake and ported stock T-body. When you really crank up the boost you wont have to worry about intake leaks...



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