30lbs on a 408 ok??
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From: Orange county n.y.
Originally Posted by ddnspider
if u do it right it could make that.so basically ur just trying to be cheap with the fuel requirements!lol
You want my list of REBUY's 3 cams
2 fast intake's 78mm now a 90mm
3 TB's ported stock then ported BBK now a NW90mm
2 sets of heads $2400 set of A/S 5.3's that will be sold to pay for the AFR225's
3 set's Injector's ????
3 exhaust's
1 set of mac's then switched to Kook's
2 lids 75mm now 85mm
2 mafs
I know there is more but i am going into deep depression and debt
Originally Posted by ddnspider
start with this:
to find the fuel requirements take your horsepower and muliply it by a BSFC(brake specific fuel comsumption) ie 550X.5(for NA streetcar)=275lbhr of fuel divide by # of injectors ie 8 so 275/8=34.375lb/hr. now explain how a 30# injectors will product that value without pushing it too much?very easy to solve.math is your friend when it comes to motors
to find the fuel requirements take your horsepower and muliply it by a BSFC(brake specific fuel comsumption) ie 550X.5(for NA streetcar)=275lbhr of fuel divide by # of injectors ie 8 so 275/8=34.375lb/hr. now explain how a 30# injectors will product that value without pushing it too much?very easy to solve.math is your friend when it comes to motors
SVO 30lb injectors are rated @ 40 psi, at 58 psi they flow 36.12 lbs
Originally Posted by oange ss
well in that case why not just get 95 lb injectors
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From: Orange county n.y.
Originally Posted by ddnspider
because u know giving yourself small room to grow is the same as total overkill.what a dumbass.why make a post like that that doesnt help this guy out.think next time.destroyerss id suggest the 42#ers likes been stated but if u feel the need stay with what u have and see what happens if u dont mind a high duty cycle.
Thanks Shawn ur not going to care if theres a slightly better physical spray pattern as long as u have someone who has a clue when it comes to the tune.Hell u could get 60#ers and have it idle smooth as stock with a decent tuner
Originally Posted by ddnspider
because u know giving yourself small room to grow is the same as total overkill.what a dumbass.why make a post like that that doesnt help this guy out.think next time.destroyerss id suggest the 42#ers likes been stated but if u feel the need stay with what u have and see what happens if u dont mind a high duty cycle.
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Originally Posted by destroyerSS
What is a safe duty cycle 85-90% ??? and is there any truth to the statement that a smaller injector @ say 85-90% duty cycle will give a better spray pattern than a larger injector @ 70% or so duty cycle Thanks Shawn
Thanks ShawnIf you were to use the SVO 42s you would have 48.5lb/hr @ 58 psi rail pressure. Plugging 48.5 lb/hr into the equation I get 81.57% idc. Just over the accepted 80%, but not too bad. Keep in mind, I used a "conservative .50 BSFC. The more efficient the engine is, the lower this # becomes and the less fuel required to make the same hp.
The equation I used for these calcs is:
(BHP)(BSFC)/(# of cylinders)(IDC) = lb/hr required
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From: Orange county n.y.
I think i'm gonna buy the SVO 42lb and bring them with me to get my car tuned and if the 30lb injector struggle i can change them out in no time BTW will my stock pump be enough till the winter??
BTW will my stock pump be enough till the winter?? 
out of curiosity, why would you NOT want to just put them in and tune with 42s in? the tune takes the same amount of time, and they drive the same, so if you already own them...why?!?!
green tops
4bar=58psi is standard GM fuel pressure
so 40#@3bar=48.5#@4bar (look in http://redhardsupra.blogspot.com/200...le-tuning.html for the full table)
4bar=58psi is standard GM fuel pressure
so 40#@3bar=48.5#@4bar (look in http://redhardsupra.blogspot.com/200...le-tuning.html for the full table)
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OK damn it i just bought svo 42lb injectors 
Now here's my next ?? Will i be able to get my car tuned with the stock fuel pump?? then over the winter i will get a racetronix kit. Will my stock pump make enough?? BTW pump has 50k on it.
Now here's my next ?? Will i be able to get my car tuned with the stock fuel pump?? then over the winter i will get a racetronix kit. Will my stock pump make enough?? BTW pump has 50k on it. 
The stock pump might or it might not. Some factory pumps seem to go a bit further then others. I'm sure you have some coin tied up in your motor; my advice would be to bite the bullet and get a new pump. 
Matt
Matt
Originally Posted by destroyerSS
OK damn it i just bought svo 42lb injectors Now here's my next ?? Will i be able to get my car tuned with the stock fuel pump?? then over the winter i will get a racetronix kit. Will my stock pump make enough?? BTW pump has 50k on it.
Now here's my next ?? Will i be able to get my car tuned with the stock fuel pump?? then over the winter i will get a racetronix kit. Will my stock pump make enough?? BTW pump has 50k on it.
OK who has the best prices for a in the tank kit for a 98. I would assume an in the tank 255 would be enough??