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convince me...nitrous VS FI

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Old May 10, 2005 | 09:20 AM
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Default convince me...nitrous VS FI

i'm going to be building a forged 408 here hopefully...thing is, is that i won't have enough money to do the engine and a forced induction setup at the same time...it may be a year away...i don't want to change things around and i want good power in the mean time...thing is i don't like how you have to fill nitrous up and it's not an "all the time" power adder...what would be the best bet for me...i am a college student and i don't have tons of money...should i get a 408 w/AFR's and a custom futral cam...(11.1) compression (maybe top it off with a 200 shot) (will an eagle forged 408 handle that?)...or should i get the same thing but with a blower cam and a lower compression (8.5) so i can run boost...maybe a d-1sc or something?
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Old May 10, 2005 | 09:37 AM
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Well let me be honest you will go faster cheaper with n2o. I just love FI cars and I don't want to fill a bottle either, but for what I have in my car I would be raping everyone with bigger motor and n2o. JMO I am sure if you buy some used parts/blower kit that you could cut some of the cost of a FI setup I still don't think it will be as fast for the money. So if you don't want to fill the bottle buy a blower/Turbo etc... If you want to save some money buy the nitrous kit and go down the road JMO. Have fun.
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Old May 10, 2005 | 10:13 AM
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if you ever have to refill a supercharger or a turbo let me know.
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Old May 10, 2005 | 10:17 AM
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i know, i know...i'm just not sure if i can afford it all at once...and i sure don't want to run an engine setup for boost without the boost...it will be slow...if i'm lucky i'll be able to do the forced induction as that is what i have always wanted...however we will see if it's possible and if this engine now holds out (101,000 miles)
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Old May 10, 2005 | 10:24 AM
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N2O is an accident waiting to happen. Every motor running spray has an expiration
date somewhere, mostly due to abuse and overuse. Im not completly against it if
it is done right and in proportion to your hardware (motor). But one of these days your going to push that button and KABOOM!
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Old May 10, 2005 | 10:28 AM
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Originally Posted by Lasershop
N2O is an accident waiting to happen. Every motor running spray has an expiration
date somewhere, mostly due to abuse and overuse. Im not completly against it if
it is done right and in proportion to your hardware (motor). But one of these days your going to push that button and KABOOM!
That's not the best argument, IMO. The phrase "...one of these days your going to push the pedel (in an FI car) and KABOOM!" works just as well. A lean spike due to a bad injector or a weird tune...accidents waiting to happen. Hell, MightyMouse is everyone's hero but he's gone through a few motors on the way to where he's at. You have to pay to play. N2O, FI, NA, doesnt matter. You want cheap? Build a 408 with Eagle stuff and LS1 heads, keep it NA.
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Old May 10, 2005 | 10:34 AM
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but i'm wanting more than a 408 with ls1 heads...however, maybe i should do that and get a different cam, keep my heads, and build a forged 408...then later on i can get some AFR heads and lower the compression enough to run a nice forced induction setup...what do you think...how much power would i get with ls1 heads?
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Old May 10, 2005 | 10:38 AM
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Nitrous is limited to the amount you are using and how big your bottle is. The more you use, the more times you have to refill it. I have nitrous now, but wanting to goto a supercharger. I can't tell how much it sucks when I want to blow someone's doors completely off and my bottle is low or empty. Also, big nitrous use requires a really good breathing motor. The engine has to be able to ingest the incoming air and fuel along with the nitrous mixture. Don't get me wrong. Nitrous is a great kick in the *** when activated and is simple to tune the car. I ran two years on my stock block without any problems because I never tried to lean it out. Since you have the 408 you can make it run smooth on the street, and unleash it with the spray. It really throws people off. The only down sides are like I said running out and beating up the motor.
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Old May 10, 2005 | 10:42 AM
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ive had both, turboing has come a long way since i did it. i remember, harlan, MM, myself, smokin hawk, we where some of the first FI cars on this board. however, i got out of it, my kit, wasnt so great, wanted a change, and im pretty happy with my conversion. for a street car turbo is the best way, like i used to say to cars on spray, race me 10 times in a row, no getting out of the car!!! but 1/4 mile at a time spray is fun as ****.
as for spray being dangeros, believe me, turbo/SC is just as bad.
and as for spray being cheeper. if it is, its not by much (to do it right that is) not an NX kit and a 150 shot. you start hitting it with 250 300 or more, and get a NOSzle system or derect port, man it aint cheep. stand alone fuel systems and regulators and safties and purges and so on and so on. its not as cheep as some would think.

you are in FL so I cant help you out down there, but i know if i was doing a turbo car W2W or Speed inc is where i would go (unless i did it myself working with ESP on a cusstom kit) or for spray, East Side performance is running some of the faster spray cars. right now we have 2 small motor cars going 9.6's and more on the way, and both my car and Gary's are going to go faster for sure. the season just started!!!!
either way, both setup have goods and bads. its what your wallet will let you do, and what you want from your car.
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Old May 10, 2005 | 10:43 AM
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as for running out, i have 6 bottles. i wont run out. lol
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Old May 10, 2005 | 10:45 AM
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Originally Posted by 777
but i'm wanting more than a 408 with ls1 heads...however, maybe i should do that and get a different cam, keep my heads, and build a forged 408...then later on i can get some AFR heads and lower the compression enough to run a nice forced induction setup...what do you think...how much power would i get with ls1 heads?
Well...I didn't mean stock LS1 heads, just cheaper heads than AFR's. There was a dude on there than ran a 408 with stock heads though. Cant remember his screen name. But, the plan is sound. TEA 1.5 truck heads on a 408 with dished pistons will get you a decent NA comp ratio, then swap to big chamber heads for boost. Pippy drove around on low compression for a while (35x cid) and honestly you wouldnt be giving up THAT much power for ~2 point of static CR. You can tailor your cam to keep dynamic comp up NA and it will have plenty of power.
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Old May 10, 2005 | 11:27 AM
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wanna save some bux, just forge your stock block. keep the stock heads but do a cam with comp 921's and some good pushrods. with the leftovers you can get a supercharger. if this ain't a race car for all out performance you don't need a 408 unless you like saying you have a 408.
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Old May 10, 2005 | 11:37 AM
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i think i would like the torque of the 408...plus the room for more...you know how it is...once you get a goal you make another one...i can get an
Eagle 408 ci :
-NEW GM 6.0l block
-Eagle 4.00" 4340 crank
-Eagle 6.125" H-beam rods
-Diamond pistons w\rings(flat or dish)
-Federal Mogul bearings
-ARP main studs
-balanced\blueprinted\assembled
for around 4000-4500
a 347 of the same caliber is going to run upwards of 3500 anyhow...so i figure what's the extra 500 bucks for a completly FRESH motor...i could get callies forged parts...but do you think i would need that much of an engine? it would be like a 1000 more
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Old May 10, 2005 | 12:23 PM
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a forged 347 you can get for 2700 from our sponsors here.

don't forget you are adding 90 lbs with a 408 cause its iron.

the supercharger is gonna give you torque, its not like a stock block can't make good power.

With a 408, to do it right, you'll need a good set of stage 3 heads and a bigger cam and you may have to get a bigger blower since you have to push more air in a bigger engine. Just trying to give you the total picture here.

Bottom line if you're a broke college student, keep your setup simple, go stock cubes, forged and spray it.
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Old May 10, 2005 | 12:34 PM
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Originally Posted by Got Me SOM
a forged 347 you can get for 2700 from our sponsors here.

don't forget you are adding 90 lbs with a 408 cause its iron.

the supercharger is gonna give you torque, its not like a stock block can't make good power.

With a 408, to do it right, you'll need a good set of stage 3 heads and a bigger cam and you may have to get a bigger blower since you have to push more air in a bigger engine. Just trying to give you the total picture here.

Bottom line if you're a broke college student, keep your setup simple, go stock cubes, forged and spray it.

Yep. For the street aps, unless you are worried about making big numbers on pump gas without the meth / h2o injection, you really don't need to go to much bigger than stock cubes. If you want the added strenght and peice of mind, then go with an iron block, on a stock crank (which should last for a while), forged bottom end, a decent set of heads (ported LQ4s from a sponsor or AFRs or All Pros, if you can afford the latter) boost and go @ it. yes FI is hard on motors, but N2O is really hard on rings as well as bearings too. Instantanious hits of power vs. the somewhat softer gradual build of a S/C / turbo, will mean less tear downs and rebuilds (though if you are making power, expect to do that). Plus, if you were to go with the 6.0L right now, honed or bored .030 over, you wouldn't have to buy a new block when you go to a second rebuild (unless you junk it from a rod) you can clean up and go again, and put in the stroker crank the second time. Good luck, whatever you do.
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Old May 10, 2005 | 01:39 PM
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as for spray being cheeper. if it is, its not by much (to do it right that is) not an NX kit and a 150 shot. you start hitting it with 250 300 or more, and get a NOSzle system or derect port, man it aint cheep. stand alone fuel systems and regulators and safties and purges and so on and so on. its not as cheep as some would think.
Yes I know that it is not always cheap, but I was speaking in general. The 150-200 wet kits are fairly cheap and he hasn't said what his goal is as far as time or hp so I would think he is in the 150-200 range and no direct port or anything fancy. That is what I am basing my opinions on. Good luck you will have a fast car anyway you go>
Jeff
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Old May 10, 2005 | 01:58 PM
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i want at least 650rwhp...and to be able to run it on 93 octane...i'm thinking a turbo is best for me...that way i can run race gas if i wanted to up the boost to make more power
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Old May 10, 2005 | 02:06 PM
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Originally Posted by 777
i want at least 650rwhp...and to be able to run it on 93 octane...i'm thinking a turbo is best for me...that way i can run race gas if i wanted to up the boost to make more power
Then go with a 347, mild heads and cam, and PTK w/ T-76 GST. That will easily give you 650 rwhp++++
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Old May 10, 2005 | 02:12 PM
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having gone the N20 route,it can get old when you want more and more,so now im converting to FI,it costs more in the beginning but its worth it in the long run.
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Old May 10, 2005 | 02:45 PM
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I've got the perfect solution to this painful dilemma:
Forged 347, mild heads and cam, bf turbo, AND

Nitrous!

Then you'll have fine powerplant...
Or an elaborate bomb, I'm not sure
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