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Old 09-10-2009, 01:43 AM   #1
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Default ls1 block ls6 heads but what cam??

i have a new ls1 motor with new ls6 heads running through a a3(th350)i like the big cams g5x4 trex etc etc but i want to spray now ! i have a 100 shot dry and looking for the best cam to run na but yet run good when i decided i need the bottle i have pacesetter longtubes duals and a ls6 intake.... im willing to mill heads but also need help with pushrod length and the ptv will flycut stock pistons aswell thanks for ur help......
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Old 09-10-2009, 11:07 AM   #2
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anyone??? if u need more info let me kno
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Old 09-10-2009, 11:15 AM   #3
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my advice do a 100 shot wet
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Nitrous is a legitimate form of forced induction. So no, it is most definitely not cheating at all.

Boost vs. Nitrous equates to fun times :beer:
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Old 09-10-2009, 11:58 AM   #4
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why a wet shot???
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Old 09-10-2009, 12:02 PM   #5
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you can keep a cam like that and spray it. as long as you stay below 150 and 175 maybe i dont see it affecting the cam... and for dry or wet read the sticky in the nitrous section. has all pros and cons to both
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Old 09-10-2009, 12:09 PM   #6
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Wet vs. Dry
These questions will come up alot, so I'll try to address them now. The main difference between the 2 is the Wet kit injects fuel AND nitrous into the intake tract, whereas the Dry kit will only inject nitrous. They both have their advantages and drawbacks. If you're new to nitrous, Dry is probably for you. Its very simple to install, mostly plug and play and gives the most hit. Wet kits are generally a smoother hit comparatively and require more installation. Dry kits do not inject more fuel into the intake directly, but if nothing else was done, your engine would lean WAY out, and thats never good. What the dry kit does is fool the fuel pressure regulator into thinking its not adding enough fuel. It opens it up (or closes it, however the LS1 works)[LSx platform uses the MAF to tell pcm to add fuel thru injectors, and LTx uses reg to spike fuel pressure with aux fuel pump. Robert56] and adds more fuel that way. The problem with this is its very easy to lean out. If the vaccuum line pops off or something goes wrong with the FPR, you can lose fuel and this can damage your engine in no time if the nitrous isnt turned off. Also, you'll probably get people telling you that you cant run big shots on dry. This is not true. USA Motorsports used to competitively race using a 2 stage dry kit 175-300.
Wet on the other hand is the most tuneable of the 2 (not including foggers or direct port, I'll go over that later). It adds additional fuel through a seperate solenoid and atomizes it with the nitrous in the intake tract. This is safer in the sense that you dont rely on the FPR to add more fuel, but the downside is if you shut down too early and do not stop spraying early enough, the fuel/nitrous mixture can puddle up inside the intake and cause a nitrous backfire. If you have never seen one, I hope you never do. They are not pretty. I had one in my old racecar. It was a 250 shot and it blew halfway down the track. The hood was toast, the intake was split in 3 pieces, TB cracked in half and the MAF was blown away somewhere and couldnt be found. Not fun. While this isnt a common occurance, it IS possable.
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Nitrous is a legitimate form of forced induction. So no, it is most definitely not cheating at all.

Boost vs. Nitrous equates to fun times :beer:
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Old 09-10-2009, 12:39 PM   #7
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ok lets stay on the cam thanks for the nitrous info though..... so a 100 shot on a trex would work?? whatat about my ptv clearance? would that matter... should i flycut my pistons a bit to make sure??
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Old 09-10-2009, 01:32 PM   #8
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With a trex you need to measure. Most will BARELY clear but some don't.....
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Old 09-10-2009, 02:23 PM   #9
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i have one that clears but with the 100 shot should i flycut to make sure??? would there be any difference??
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Old 09-10-2009, 04:15 PM   #10
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You want at least .070 on the intake and .100 on the exhaust. If you don't have that I would flycut..... If you are M6 clearance is even more important in case you miss a shift. Some guys get by running less so I am just giving you my .02
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Old 09-10-2009, 05:32 PM   #11
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would this effect anything by flycutting??
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Old 09-10-2009, 05:37 PM   #12
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Quote:
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would this effect anything by flycutting??
i go no less than .100 ptv clearance on both valves
cutting will affect scr, not by much but will have to account for it.
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Old 09-10-2009, 06:05 PM   #13
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i say 59cc chambers, .040 head gasket, g5x4...

dont forget to add a fuel pump and injectors to the list...
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Old 10-31-2009, 07:00 AM   #14
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why not get a custom gring for nitrous?
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Old 10-31-2009, 09:19 AM   #15
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If you go with the dry kit your injectors better be up to the task. I personally like the wet kit better, but in is a more expensive and a harder install. Fuel pump HAS to be able to handle either kit, or it will go BOOM. Dean.
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Old 10-31-2009, 09:40 AM   #16
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As for checking pushrod length, get one of the adjustable pushrods thats in the range you need, comp, trickflow,and there are others that make them. Set the proper length to achieve correct preload, tighten the locknut on the pushrod then measure, or send the pushrod to your pushrod company of choice. I recommend sending the pushrod, because they are very difficult to measure correctly. I know this makes for a lot of downtime, but it is the correct method, if you don't have the proper tools to correctly measure. Hope this helps, Dean.
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