nitrous friendly cam?
nitrous friendly cam? well i think i am going to get a nitrous kit for my car put a cam in and call it a day until i can afford a motor swap to what i want to do, i was discussing this with a few or my friends and..... question is what would be a good cam for say a 100-150 shot on a stock internals (it will be tuned for the spray with all the safety electronics ie. window, and wot switches, and i will more than likely run a msd 6AL, i will also be upgrading the fuel pump and if need be better injectors) i was looking through thunder racing at the cams they have, i will consider a custom grind but im also looking at price to so thats why i was looking at off the shelf cams. here's is a few grinds i was looking at i know what the spec #'s mean but im not real sure on which ones would work well with a stock internal spray car. ones i was looking at
230 / 236, .510 / .520 112 LSA
the 305 on a 112 and 114lsa.... lift and duration #'s 220 / 230, .510 / .510
was also looking at the 503
was considering the 306 but dont want to take that big a chance
so any input on if any of these would be good for what i mentioned beforehand or another cam that would be better that i didnt list, thanks
guys
230 / 236, .510 / .520 112 LSA
the 305 on a 112 and 114lsa.... lift and duration #'s 220 / 230, .510 / .510
was also looking at the 503
was considering the 306 but dont want to take that big a chance
so any input on if any of these would be good for what i mentioned beforehand or another cam that would be better that i didnt list, thanks
guys
For a mild shot like that pick a cam you will be happy with NA, a "nitrous grind" isn't going to gain you much on the bottle over what a traditional cam would with that small shot.
Far as custom vs. off the shelf you should know many vendors sell custom Comps for the same price as off the shelf, I know www.advancedinduction.com does for one but I wont claim they are the only ones.
One of the Impala guys ran the 845 and sprayed and eventually decided to let Desktop Dyno help him spec a juice grind that was something like 222/226 on a 116 lost .3 NA and was no better on the bottle. His best 845 NA time was 12.6 the best juice 222/226 Erson time was 11.9 but was with .45 better BARO, he was man enough to admit the "nitrous grind" was a mistake.
Far as custom vs. off the shelf you should know many vendors sell custom Comps for the same price as off the shelf, I know www.advancedinduction.com does for one but I wont claim they are the only ones.
One of the Impala guys ran the 845 and sprayed and eventually decided to let Desktop Dyno help him spec a juice grind that was something like 222/226 on a 116 lost .3 NA and was no better on the bottle. His best 845 NA time was 12.6 the best juice 222/226 Erson time was 11.9 but was with .45 better BARO, he was man enough to admit the "nitrous grind" was a mistake.
so would any of those that i listed be good for what im wanting to do then, i was really considering that 1st XFI grind that i listed, but have also been looking pretty hard at the 305/503 cams, i would like the 112 lsa for the lope but if the 114 would handle the spray better for about the same gains NA i would do the 114 ...... BTW these are gonna be used on a 7/16's NSA 1.6 RR so the lift numbers will be higher
112 is already usually a BIG compromise made to the cam to accomodate the majority that want to overcam, this way it will run OK but leaves power on the table.
IMO to go as big as 230 in the intake you should be looking at increasing compression, then again I come at this from the angle of a heavier daily driver that sees some track time.
IMO to go as big as 230 in the intake you should be looking at increasing compression, then again I come at this from the angle of a heavier daily driver that sees some track time.
im the same here, mine is driven every day at least a little even if use the motorcycle to get to class, let me put it this way i will very rarely spray unless im at the track or messing with someone on the street, like i said i would like the 112 LSA for the lope and the XFI that i listed runs a 112 but if i were to get the 305/503 they both come with 114 or 112 lsa's, what would you recommend
112 is what most off the shelf cams are, most of the sucessful custom stuff that is helping guys make big power these days is tighter than that one popular custom grinder does a lot of 108. What I am saying is gompletely forget the 114 stuff, MAYBE if this were an agressive blower car I would conside that.
All that said LSA SHOULD be a result of proper lobe placement and not a spec you pick from the start.
The 503 is a well proven cam maybe consider it on no wider than 112, you want some lope talk to the place you order from about how it would be ground on 110-111, of you have emmissions testing be warned a lopey cam may be tough to get past the sniffer.
All that said LSA SHOULD be a result of proper lobe placement and not a spec you pick from the start.
The 503 is a well proven cam maybe consider it on no wider than 112, you want some lope talk to the place you order from about how it would be ground on 110-111, of you have emmissions testing be warned a lopey cam may be tough to get past the sniffer.
TX here no emissions, so you think if i could get the 503 on a 110 or 111 do you still think it would be good for the spray without any problems, and would the 305 be good on that lsa also for spray ...... i was thinking the XFI cam cause it was a little more aggressive than the others without being to extreme compared to the others also, if i could get the XFI on a lower LSA what would you think of that, reason i was looking at it was because it has slightly higher lift and duration. I guess im trying to say i would like to get the XFI cam because of the profile it has on lift and duration because it doesnt look like it will be to much for all stock motor with bolt-ons and some valvetrain work, but would it be better off with a 110-111LSA if im spraying it every now and then.
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Where is Joe B when we need him. Lloyd did a head and cam setup for him with a mild daily driver cam and LE2 heads, last time we talked he was in the high 10's with a 125 shot and promply got asked to leave the track since he's not setup to run those times legally. FWIW a N2O cam with a small shot is not going to be hugely different from a NA cam. A 503 is closer to what Joe B was running than anything else you mentioned here.
Bret
Bret
i may just do that with the XFI i mentioned then cause its where i want the car N/A and with the 100-150 shot it will just be a little extra go when i want it, thanks for the input i didnt know if it would make a big deal since i was going to be running a relatively small shot anyway, if i can just put a shot on the XFI cam without any problems it will work for me, thanks guy
TECH Fanatic
Joined: Feb 2006
Posts: 1,119
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Check this site out for nitrous cams, Hope it helps
http://www.cmotorsports.com/engine/l...ft-design.html
http://www.cmotorsports.com/engine/l...ft-design.html
As Bret and I said a nitrous cam for this size shot does not need to be that different from a NA cam. The 114lsa stuff on CMs site there is as much marketting as anything. Not knocking CM I have happily bought from them in the past but let's be honest if a company wants to survive these days they need to play to what the ignorant want.
TECH Regular
Joined: Sep 2006
Posts: 474
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From: MI
I read an article in carcraft as to weather a Nitrous cam did as they say, or if the NA cam would do near the same. the end results did not look good for the nitrous cam. the specs were pretty close, only the nitrous cam was spread(114) with a bit more exhuast duration. The NA cam out performed it in every area. It was only either a 200 shot, or 250 shot on I think a mildly built 350. The NA cam smoked the Nitrous one running NA, and then wih nitrous, smoked it again, by the same margin.
I also think it is more marketing, and that the theroy turned out to backfire.
Pick a cam that will work very well NA, and chaces are it will perform very well on the Juice.
Man, whats up with ISSF? *one week later* WTF?
I also think it is more marketing, and that the theroy turned out to backfire.
Pick a cam that will work very well NA, and chaces are it will perform very well on the Juice.
Man, whats up with ISSF? *one week later* WTF?
thanks for the link warrior i see a couple of cams on their page i think would work very well for what im trying to do. im going to call them tomorrow and see what they recommend for the rest of the vavletrain for the cam that i get from them. you guys think that 30lb injectors would be enough for any of these cams - (1.230/236 duration, .544"/.555", 112lsa)
(2. 233/239 duration, .569"/.577", 112lsa also on a 111lsa)
(3. 227/233 duration, .560"/.569", 111lsa)
- with a 150shot tuned. i will be upgrading the fuel pump with a racetronix kit and am looking at some 30lb injectors, if they are not to much overkill.
(2. 233/239 duration, .569"/.577", 112lsa also on a 111lsa)
(3. 227/233 duration, .560"/.569", 111lsa)
- with a 150shot tuned. i will be upgrading the fuel pump with a racetronix kit and am looking at some 30lb injectors, if they are not to much overkill.
