T-Rex cam and Nitrous
T-Rex cam and Nitrous I also posted this in the nitrous section. I'm not sure which one it belongs in:
My boyfriend has the t-rex cam, and he keeps talking about putting nitrous on his car. I don't personally know anyone who has used nitrous with this cam, so I need to know if you can do it or not. I was thinking that you can't because of the lobe separation... his is on a 109.5
Someone who has some experience with this, let me know some facts about cams and nitrous.
BTW, we're talking about a 150 shot here if that makes a difference.
My boyfriend has the t-rex cam, and he keeps talking about putting nitrous on his car. I don't personally know anyone who has used nitrous with this cam, so I need to know if you can do it or not. I was thinking that you can't because of the lobe separation... his is on a 109.5
Someone who has some experience with this, let me know some facts about cams and nitrous.
BTW, we're talking about a 150 shot here if that makes a difference.
ideally you want something higher than that. The MS3 is a big cam that likes the spray. It really wont matter if you are not going huge with the spray. I guess you could spray this cam, it will react to it thats for sure. 112-114+ is good for a sprayed setup generally. but a 150 probably wont matter too much.
it won't be 100% efficient but it isn't gonna be any slouch either - on shots of 200 or bigger, you'll generally start to notice a difference in advertised power versus what you will actually see
Originally Posted by orangeapeel
ideally you want something higher than that. The MS3 is a big cam that likes the spray. It really wont matter if you are not going huge with the spray. I guess you could spray this cam, it will react to it thats for sure. 112-114+ is good for a sprayed setup generally. but a 150 probably wont matter too much.
It seems like once a month I have to debunk this myth: The amount of overlap is not the main factor in determining how effective a 'nitrous' cam is. You also need to look at total overlap not just if the cam is on a 106 or 110 or 114 LSA.
The single biggest factor on a nitrous cam IMHO is the exhaust valve opening point. Because the nitrous causes the burn to happen faster you need to open the exhaust sooner in order get the burned up exhaust gases out and a fresh intake charge in the motor. The TRex works VERY well with nitrous. Just because the LSA is 110 degrees doesn't mean squat. Relatively speaking it has a fairly 'early' exhaust opening which happens to be ideal for large nitrous shots. If you are avoing this cam because it isn't nitrous friendly, don't. It works great with spray.
Just as another point of reference we just did a 408 that used a 248/254 cam that picked up 185 RWHP with a 150 HP shot on it.
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I just said ideally... isnt the Trex 25* overlap anyway? I do agree with you completely, I was just saying that generally most people running big spray have a higher LSA.
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Originally Posted by NOS USER
all cams work with the spray so let him do it & give us the result 
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Originally Posted by Geoff
It seems like once a month I have to debunk this myth: The amount of overlap is not the main factor in determining how effective a 'nitrous' cam is. You also need to look at total overlap not just if the cam is on a 106 or 110 or 114 LSA.
The single biggest factor on a nitrous cam IMHO is the exhaust valve opening point. Because the nitrous causes the burn to happen faster you need to open the exhaust sooner in order get the burned up exhaust gases out and a fresh intake charge in the motor. The TRex works VERY well with nitrous. Just because the LSA is 110 degrees doesn't mean squat. Relatively speaking it has a fairly 'early' exhaust opening which happens to be ideal for large nitrous shots. If you are avoing this cam because it isn't nitrous friendly, don't. It works great with spray.
Just as another point of reference we just did a 408 that used a 248/254 cam that picked up 185 RWHP with a 150 HP shot on it.
The single biggest factor on a nitrous cam IMHO is the exhaust valve opening point. Because the nitrous causes the burn to happen faster you need to open the exhaust sooner in order get the burned up exhaust gases out and a fresh intake charge in the motor. The TRex works VERY well with nitrous. Just because the LSA is 110 degrees doesn't mean squat. Relatively speaking it has a fairly 'early' exhaust opening which happens to be ideal for large nitrous shots. If you are avoing this cam because it isn't nitrous friendly, don't. It works great with spray.
Just as another point of reference we just did a 408 that used a 248/254 cam that picked up 185 RWHP with a 150 HP shot on it.
At 106 it is 58* EVO and at 110 it is 54*, not what I would really call "early", but yeah it will work with nitrous in the 150 range.
