randomnine7

iTrader: (23)

well im finally getting around to putting my motor together in my z28 ..

i have a 50k miles vett short block .
mods to it ..

lid & custom ram air ..
tsp 5.3
tsp torquer 3
katech rod bolts
gm mls
arp headbolts
double roller chain
ls7 lifter
tsp pushrods
spec 3 clutch
electric cut out
ebay lt and paceseter y
underdrive ac and ps delete
fast 90/90 borrow from my lsx rx7
nitro daves plate system and a nano kit ..

and a ractronics kit
on stock inj
will be running a 150 shot but wanted to run a 175 ...

looking to shift around 6.8krpm or what ever it peaks at on the dyno

will have it tuned on motor and nitrous ..

is 175 too much ?? i will be running 2-3 bottles a month ..
not my dd number 3 out of 4 lil race cars i mess around with..

i dnt wanna blow it up too soon .. if i get 10k out of the motor thats more than i would expect (10k would last me over 2 yrs lol)..and or hurt any of the expensive parts

this will also be trailord to the track since i have the stock rear end .. for now ..

i will have the window switch fuel and wot and the rest of the safety devises the kit came with ..

now should i just stick to the 150 i planed or bump it up to the 175 ??

is that extra 25 hp not worth it ?

info would be great .. and helpfull input would be even better !! i will run 100 oc when i run the bottle ..

randomnine7

iTrader: (23)

also ..im sure there is alooot of set ups like this one soo what should i expect on motor ?

on the bottle with the 150 and 175 and also how much more power(if any) will the nano help me out with ??

c0ncEpT

iTrader: (4)

I would hit it with 200 but thats just me

Just make sure the car is tuned for the juice.

gold98Z28

iTrader: (7)

spray the ***** off it, just get a good tune on it

95 Z28

iTrader: (21)

I'd hit it with the 175. I can tell you I noticed a pretty significant difference in between the 150 and 200 shot on my car. It's your car though, and it can go at any time at those levels.

randomnine7

iTrader: (23)

yeah i think 175 is waht ima go for .. lie to everyone and say its a 100 shot .,.

and the nano kit im buying for it is rated to 175rwhp..

anyone have an idea of what kinda power it should make ?

i will have a real good tune done on it for the bottle as well as running the right plug set up and 100oct when on the bottle any more info ??

BayAreaSS

iTrader: (10)

I'm thinking it will make like 630 to the wheels

b00sted

iTrader: (7)

Make sure everything is dead on.

Probably go with a 7-8 heat range on the plugs. tr6 on motor.


I don't know how you're going to do with stock injectors. My cam only ms3 setup(untuned and running lean too) maxes the stock injectors. You have a similar cam with the addition of heads, those injectors are gonna be limiting factor.

99Ls1fever

iTrader: (3)

Make Sure you have enough fuel and a good tuner, then you are free to party. If you have enough fuel and a good tune then you are in the clear!

randomnine7

iTrader: (23)

well ... the tunner said the injectors would be fine .. i have a racetronix kit on it . but still wondering if u should run a bigger injector .

well ill get it tuned an see what happends .. but yeah an inj upgrade might be in the future .

blackls1ta00

iTrader: (27)

those injectors wont be fine,run it hard and melt a piston then say i told you so.

gold98Z28

iTrader: (7)

if he has the 28.8's he will be fine (year not noted) if thats a wet shot. i dont see that combo maxing them. they make more power than most people think and give them credit for

randomnine7

iTrader: (23)

i have a set of 02 inj . and yes it is a wet shot with the racetronix wire kit and walbro .

ill see how it does . if not whats a good inj upgrade for my use .. i want a little over 600+rwhp and wont be doing much else to the motor in the near future.

gold98Z28

iTrader: (7)

ok, with a wet shot take the nitrous out of the injector equation, if you have enough on motor(and im confident you will with the right tune) then it will be fine on the jug also since the fuel selonoid and jetting is taking care of that, not the injectors. id say you will be right at the 600 mark on a 175 with that combo. i stay with stock injectors as long as possible since they are very acurate and stable all the way to 100% DC. if you have to upgrade a 30lb SVO red top is about 34lb on our fuel pressure and a good common and fair priced upgdrade

2001z

iTrader: (32)

Just becouse you have the racetronix pump doesnt mean all is good . I have a racetronix pump and hotwire kit and couldnt spray over 125 on it without crazy lean spikes remember all cars react diffrent.

gold98Z28

iTrader: (7)

so are we talking about his fuel system or injectors.... again, a wet hit has NOTHING to do with your injectors. your lean spike is coming from fuel pressure/volume and the fact we have a returnless style system. as long as its straight up, and straight back down your good, its normal. if it comes down slow befor it gets to your target afr then you have issues and need to ugrade your fuel system.

2001z

iTrader: (32)

Thats why i have a standalone . Thats why i posted about his fuelpump that just becouse he upgraded to a racetronix doesnt mean it will be enough. Not sure where you got i was talking about injectors .

blueshark123

iTrader: (51)

175 shot!

streetassasin

iTrader: (30)

I would only do it with 2 stages or a progressive controller

99Ls1fever

iTrader: (3)

Stick with the 150 shot till you forge the motor. Not worth having to pull the motor again. I would just run the 150 shot and get the bottle heater on it to about 1100 psi and then launch. get the max out of your 150 shot and you and keep your engine.