So far i made 480 on a 100 shot with my stock motor .. now im addicted to power and my 380 rwhp NA just doent cut it anymore

i wanna build a dual power adder motor that makes ~500 rwhp on moderate boost and then add another ~200 shot for racing and such ...

i was thinking a 9.5:1 c/r 383, cc306ish cam, my LT4 heads (309/227 @ .500), enough boost to hit 500rwhp (i figure 12# should be plenty) and another bunch of nitrous

my main goals are: excellent driveability (hence not going with a crazy NA + N2O motor), and to make around 700 rwhp on the bottle... possibly mix race gas when spraying lots ...

i can pick up a 9.5 383 locally from a friend .. so it got me thinking about this setup .. its still in the planning stages .. so thats why im looking for some advice .. much thanx

ps. i might also pick up a speedpro with the 383, and i will have an overkill fuel system ...

 

wow .. 55 views and not 1 reply

 

55 looks not one reply might be cause some were too.

You I am guessing are looking at Jazz' bottom end not a bad setup. The fast has been sold though (mike bought it)
Are you going to setup a seperate fuel system for the nitrous? Sorry but imo any car that is 700 rwhp isn't gonna be a daily driver setup cause of damage that can be done to drivetraine etc.. fuel systems etc.. so you want 700rwhp and maybe mix race gas??
Junk the cam get a new cam.
Are you going to run a dp or single nozzle system for the 200 shot? IMO and they are like A$$ holes ya know I would run more power then a lighter shot of giggle. Can it be done sure would i do it NO.

Have fun hope it all works out in the end.

Steven

 

I am one of the few retards running a dual power adder setup. There's volumes that could be said. The thing is, are you serious? As in "bring money" serious? It takes a lot to do this right.

If you're serious, a 9.5CR is too high. For starters. And if you are thinking, "but I can get a 9.5:1 short block cheap" your head is in the wrong place on this project. The price of a set of pistons will be a mere trifle in this context. Besides a $4-5K shortblock, a $2K set of heads, a $3K blower, water injection and or intercooler for $1K+, a $2-3K fuel system, etc. you will need to pay someone at least $5K to put it all together and we didn't even get into engine management. A $1-2,000 nitrous system, Then there the supporting cast of 12-bolt or 9", what you are going to do for a tranny, etc.

Figure $25K at least for a nice driver with 700rwhp and a nitrous system. I have one and I spent a lot more on mine. That's for a variety of reasons, mostly some false starts. And while it's got some good stuff, you could easily spend more. I get the parts at jobber prices and the tuning doesn't cost me anything and it has had well over 100 dyno runs.

And daily driver? Did I tell you that I have driven mine twice this year? Admittedly, I had two trouble free years out of it before I made a "few" changes. And once it's sorted out I will put a fair amount of miles on it again. But it's no daily driver!

Rich Krause

 

Very well stated Rich. I usually don't agree but you hit it on the head.

Steven

 

Someone who doesn't agree with me?

I added to my post to give the guy an idea of what I mean.

Rich Krause

 

to help things out he does have a nice set of heads
12 bolt (don't think the posi will hold for long though)
Does have a twin disk but I believe you ate through yours once Rich.


How is the new setup coming anyhow?

Steven

 

Steven: it's pretty much nailed down. The one thing left is to fab up a solid intake pipe as the one ATI supplied was collapsing. Then a couple of hours on the dyno and off I go! The fab work (cutting up and welding some 3" and 4" steel bends) is beyond me, so my friend ace mechanic Buddy will be doing it. If he gets to it this week, all will be good

To kind of keep on thread, this is the kind of thing "sideways" needs to be aware of. An unforseen problem that will result in an additional 2-4 weeks of downtime and cost $3-400. This would count as a "minor" setback on this kind of project. And the thing is, I have some doubts about the shortblock standing up to all this. I reused some parts I probably should have replaced (rods, rockers) and the crank also has quite a few cycles on it. Trying to keep the costs somewhat under control, and hoping I didn't do a "penny-wise, pound-foolish" manuver. And the IAC's are looking high in spite of the water, so it really needs a custom intercooler, which ought to run in the $1,500-2,000 range.

Hopefully, I made my point.

Rich Krause

 

It sure seems that it would be easier to make that kind of power with just a blower or turbo than to add a 200 shot of nitrous to the mix. Just buy a bigger blower or turbo.

Also if you do decide to add nitrous will something like the LT1 edit handle this? The only thing I have experience with is Speed-Pro, I know it will.

And as Rich stated there are ALWAYS set backs that add money and many many hours. I am in the process of a 1000HP streetable turbo motor and believe me I know all about set backs.

 

lol

trust me i've dont enough work on my own car to know all about setbacks and hidden costs !!!

thanx for the advice... i'll see what i can do

steven, thats a good idea about separated fuel system for the nitrous ..

IMO, a 500 rwhp blown setup on pump gas will have excellent driveability .. then add whatever shot of nitrous on top with fuel cell full of C16 for track use ..

i dont see how thats so unbelivebly hard to achive, my main goal is to build a 500 rwhp driveable car that can handle an ocasional shot of nitrous at the track

reason i thought of this idea was if want 700 rwhp out of nitrous and a big motor it will suck for drivability... if i want 700 rwhp out of boost it will have major problems of its own.. so if too much of one thing isnt gonna work, why not get a little bit of both !?

... and as for money !? well i've gotten this far on a "starving student" budget... now that im done with school im gonna be making real money so i'll have enough funds to back it up... the rst of my car is also already done as steven mentioned .. just needs more power .. and maybe a th350 swap later on

 

lol

 

I dont agree... why not a daily driver? Its true that I only put 3k miles on my car last year, but it has been down for lack of $. But almost all those 3k miles where in 2 months going to the university and such.. no overheat and no problems

 

why not alcohol?
How big of a motor are you talking about? A 383 ain't big

 

Just do a nice turbo kit with a big front mount intercooler, when you want 500rwhp set the boost at 10psi and when you want 700 crank it to 18-20 and if you want 900rwhp crank it to 30. Just make sure you have good head gaskets and head studs