Damage Inc.

iTrader: (7)

I now have a G5X3 with untouched heads, but want to go with heads as soon as I see some numbers on the AFRs and TEAs etc... My question is, with the LG cam being hard to boost compression with(PV clearance), would it be better to run a smaller cam like the G1 or so with nice heads and compression, or will I still be able to kick *** with the LG cam and lower compression heads?

Thanks in advance.

PREDATOR-Z

What is that combo for? You should build it for its purpose.

Damage Inc.

iTrader: (7)

I wanted to hit 10s on motor, before spraying it for 10s, but now I"m thinking of just spraying it cam only because of the clearance issues. Hows the G5X3 on spray? What do you think? Thanks.

PREDATOR-Z

I think you'll need a stronger bottom. Perhaps a small shot?? still though, that cam already puts the extremes to the limit.
But in theory, if you could, G5X3 + 100 wet should get you there, if you hook.

Damage Inc.

iTrader: (7)

So should I even bother with heads? If I can roll mid tens on a 100-150 wet shot cam only. I'd be down. I'd just have to swap the converter and tire.

PREDATOR-Z

Take a look at a nitrous friendly verter, with anti-balooning capabilities. The verter can be .2 sec difference if it's the right one.

Damage Inc.

iTrader: (7)

For a 150-175 shot, should I be looking at a SS4000e or a PYE3600? I still want to be decent on motor, but great on the juice. Thanks.

CHRISPY

what are the G1 specs?

Damage Inc.

iTrader: (7)

G1 specs" 228/232 .588/.575 on a 113 LSA

PREDATOR-Z

Choose the cam with the least amount of overlap , and with a 4 split on exhaust (Dur,lifts), 114lsa for N20

Damage Inc.

iTrader: (7)

So are you saying the G1 would be better on spray than my current G5X3 114 lsa?

PREDATOR-Z

I do not know the G5X3 specs but judging from the G5X2 specs and pattern, (X3) is a little bigger, I would say the G5X3 is better, because it has all the requirements of a N20 friedly cam, (exhaust split both in duration and lifts, 114 lsa and a positive degree of overlap).

94form2000z

iTrader: (10)

I think the x3 would be better, because of the same reasons mentioned. Watch your p/v clearance though.

Damage Inc.

iTrader: (7)

Yeah, I know. I'm not sure that buying a nice set of heads would even benefit me much due to the limitations of the compression bump. I think I might just spray 150 at it cam only and run a SS4000 with a 4.10 and a 28" slick. Does that sound good? Thanks for your help guys.

PREDATOR-Z

Sounds good, but word of caution! Start small 50 shot and once you get the tune right, then go up to 75 and so on. Don't get gready, N20 can be treatcherous if not monitored carefully. Autotap on the trial runs if you can, that will make your achievement so much easier and less painfull.

Damage Inc.

iTrader: (7)

Thanks for the heads up. I plan to have the car dynotuned for it before messing with it.

PREDATOR-Z

If you dyno tune then your tune will only be good for the amount of nitrous you dynoed with. If you want to go bigger, you would have to adjust accordingly.
IMO, I would dynotune for 100 shot, then get MAFT/timing tuner to adjust at the track. It is an extra $300.00 or so but well worth the expense when your motor depends on it, plus it makes adjustments so easy, you could do 1 pass at 100 shot, come to the pits, adjust a couple of ***** and you're good to shoot a 150.

Damage Inc.

iTrader: (7)

See, I don't know anything about tuning. I'd have to have it jetted for 150 and have them tune it for me. Quick question, how much will a nitrous tune affect my motor passes? On average?

PREDATOR-Z

Well, effects might vary depending on tune used, immagine pulling timing 2 degrees above 3000rpm and a little richer.
The easiest way is MAFT/Timing tuner. I think MSD window has timing capabilities for nitrous and MAFT will richen the mix above certain rpms.
It is really easy to use.
Basically you run a normal N/A tune and with MAFT/Timing box you adjust just for the times you use N20.
Some people just tune for 100 and reduce only 1 degree timing (3000rpm+) & add some race fuel to compensate.(you should pull 2 degrees for every 50 hp shot.)
That all changes when you go bigger than 100 shot.

IMO you don't Sk**W a hooker without a condom, and you don't use N20 without tuning lessons. Just learn it, it is not a brain killer.