i need your on a good carb for my 383tt. im wanting to run around 9-12lbs of boost and a 100 shot of nitris. i know i need a blow-through type but thats it... what carbs have you had luck with?

 

Get Fuel injection. why do u need n2o???

 

C&S or CSU can't hook you up with a great blow-thru carb. Just wondering, why are you gonna use nitrous with a twin-turbo set up??

 

i dont want fuel injection! i want it wireless and clean looking for show purposes. and i=again i am getting n2o for 1.. an intercoller spray and 2 show purposes at car shows. i have a full blown show car so i dont want to hear it. the bottles look good in the back hatch molded into fiberglass. thats all i got to say lol

 

thats not really a legit excuse but oh well not my car. But, just as a FYI if you know what you're doing you can always do a full wire tuck with fuel injection and see nothing but a shiny intake and will be much cleaner looking than a carb. Lets see some pictures of this "show car"

No need for n2o, if you want to lower intake temp just use other stuff like meth.

There are a couple options for carbs, as mentioned beofre CSU and C&S are some of the more popular places for blow through carbs as well as QUICKFUEL. You could either buy one from them or have them build you one from a provided carb. Ive only dealt with Kevin at csu but what happens is if you already have a carb that u would want modded you can always send it to him with a spec sheet of your turbo setup and he will mod it and tweak it for you. if you have a choke he will also remove it. I would not use anything else other than a double pumper i would thinkg 750 should be enough but idk how high u want ur HP to be

Mighty demon is another name in the blow-thru carb world but from what i hear because it is a large company their carbs are "universal" and will require more tunning and modifying.

The other way is to mod your own carb for blowthru if you have a double pumper. Holley is the most popular for modding.

Blow thru is pretty straight forward if you understand the concepts, you will need a decent fuel system if you want some decent and reliable power i would suggest either dual intank walbros with -8 feed and -10 return or if u wanna keep it mild -8feed and -8 return. Aeromotive A1000 are popular too.

You def. need a 1:1 fuel pressure regulator like the aeromotive 132-02 with two -8 to the bowls

You never mentioned ur hp goal but if u have a mild 383, im hoping its around 400-500hp and with twins at 9-12psi u could be 600-700hp but again u never mentioned anything about the hp goal or turbo sizes

 

i have an old friend that has been doing nothing but wireing for about 5 decades now and makes his own wireing harness. he said he can do my WHOLE car for 900 and can tuck all my wires away but for right now im trying to stay on somewhat of a budget and fuel injection is exspensive but i know exactly what kit i would get if i did go that rout. right now i have all scat forged internals with arp 6" rods and keith black 7cc piston heads. all msd ignition with an hei distributor and edlebrock high rpm top end kit with 64cc head. the only thing my serpintine belt is powering is my 140amp powermaster alternator i have an electric waterpump and i have a manual pinto rack and pinion so no power steerign pump. i had it on an engine dyno without the turbos and it pushes 592-603 hp at the crank. now with the 100 shot maybe 560- 580 at the rear wheels? and im looking for about 900- maybe 1000 hp with twin t4 turbos if i can with a turbo timer and greddy intercooler. if i add an intercooler i could possibly step up the boost to 15 or 18lbs maybe because of restriction...??? idk im kinda throwing numbers out there of what i want but not sure if i can get it. also i need to get bigger heads to lower my compression back down because of boost so maybe 84cc heads?

 

Those pistons will melt long before you hit 900hp.... You NEED a decent forged piston if your shooting for 1000hp. I'd go with a JE SRP blower/turbo piston with a static compression ratio of around 8.5:1. They're good strong pistons without breaking the bank.

I just want to add one more thing to this thread. Aside from the fabrication involved with setting up a twin-turbo system, anyone interested in going to a blow-thru set up should have in there car and know how to read either a wide band or EGT. Also, you don't have to be a professional tuner but, keep in mind that a blow-thru system is alittle less forgiving than other application's. So, do your homework before jumping in to a project like this, unless you enjoy melting your engine down...

 

i can tell you now, WILL NOT HAPPEN. 1000hp motors are never cheap and you will need a drivetrain that can support that. To begin with chances are that your block if its a stock 350 bored out will not handle th,e abuse. Other than that you will need dished pistons, the ones you have will NOT like boost and will fry easily. Also it sounds like the engine was built for NA so im sure the cam will suck for turbo as well. Look man beleive it or not if you want 900hp-1000hp safely and want it to last you will basically have to redo everything and DO ALOT OF RESEARCH. 64cc heads are fine just get dished pistons, a single plain intake a custom turbo cam, build you own headers and cold side and dont forget ARP everything.

One last things a turbo timer and greddy intercooler doesnt mean crap a turbo timer will not allow you to raise boost in any way shape or form, just makes your turbos last longer basically. Let import guys use greddy stuff, for 1000hp you will need a intercooler that can handle the abuse. also you probably will not reach 1000hp with pump gas.

You need to do alot of research before a build like this or else you will be throwing out money and then come back here and tell us how ur engine blew up.

Ignition system: get something that can retard timing as boost increases like a BTM or 6al-2 or 6al-2 digital programmable

 

Keith black pistons, alteast a 7cc (positive dome) aren't going to be boost friendly like everyone has already pointed out. Also, where / who is making 84cc heads for a SBC ?? What RPM was your 383 making 592+ hp at the crank!! ? I agree with ditching the thought of N20 if all you want is lower intake temps and go with a Snow Performance meth kit or something.
Sorry man but reading through this doesn't give me atleast the impression you've put alot of research into this. Hopefully I'm wrong and you'll have something (a motor) and car your happy with.

 

and thats the truth i have not put alot of thought into it. i was going to hold off on the motor build up but back in high school i traded a t-top 92 rs with a turbo350 for a 92 z28 5 speed with a 355 and found out it had a spun baring so in mechanic class me and my teacher stripped it down and polled the crank and found out it was groved out .60 so it was shot. decided since it needed a new crank i bought a bottom end kit from scat and the car already had a full msd 6 spark ignition kit with an hei distributor. and then i figured since im spending money mine as well buy a decnt ,but quick thought, top end kit so i settled for the edlbrock high rpm top end kit. it was stolen my graduation day and i chased the MFers down in my other camaro an hour before i walked. now it sits at the impond waiting for the court to realese it...STILL!!!

 

hold on, you had a car stolen the day you graduated from high school and now its in the impound and you havent gotten it back?

if it were me **** would have it the fan by now.

 

not to be rude or mean. but i think people have put a lot of ideas in your head about how things work.
turbo or boost will thrive on lower compression. nitrous to cool. use a smaller shot. 50 to 75 most. but nos will expand in the cylinder while you are pushing in boost. quite truthfully you need to start over. if the engine is built with high compression and forged internals shove in the nos. if not and boost is a must then shoot for lower compression.

 

it was not my car that was stolen but the motor for it that was in the garage on an engine cradle sitting next to my car. and yea! i am getting real fed up with the sheriffs office and this past week i have been calling then and trying to speak to someone about it but it seems like the person that i need to talk to is NEVER THERE... hmm kinda fishy if you ask me.

 

here are some before pictures of my motor when it was stolen

 

and after... they broke my oil pressure sending unit, hei distributor cap, bent my alternator bracket and air cleaner, and dented my valve covers and my engine cradle is all bent to S***T

 

csu does good work. if your savy with a carb, its not too hard to achieve at home with basic tools.
http://www.hangar18fabrication.com/blowthru.html

 

Guys another question.. I have a carb 1987 camaro. i know i have to get the whole turbo kit. but i need and want to find the right turbo kit.. i dont own a fuel injection camaro. and i wanna keep the camaro carb. can someone help me find the right twin turbo? in ebay they have one but its not for a carb. the Stainless Manifolds Headers arent the ones for the carb camaro i got. any ideas? please help me and explain it in english. i still dont speak mechanic. by the way im 18. my first project car . http://www.ebay.com/itm/Chevy-SBC-Tw...a8b4be&vxp=mtr

 

Those look like iron heads to me. But aside from that i have a real question.
Going back to the beginning you said . Why do you care what carb is on it if you don't care how it runs? I'm new here so I'll stay polite but I'm seeing a run o' the mill small block with a spray painted intake and a set of valves cover from 1989. It screams 80's with the Accel Super Stock wires 2" air cleaner, and Moroso covers. Oh yeah where did the 383 come in? I read a story about a 355. As much as I want to call BS I'll leave it be.

 

Quick Fuel Technologies, have blow through carbs, ready to run....

 

Wow i forgot all about this post. This was over 3 years ago but here is what it looks like now. For one it has been dynoed @612 hp at the crank. I have purchased a blow through car from summit for $900 but yet to make my own kit. I'm trying to find a pair of turbos that are a mirror image of each other if anyone has any ideas. And also for that reason of it being a show car that's EXACTLY why i care how it runs. We have all ran into those haters, and i for one would like to have a nice running show car to shut them up. And as for the block it has been color matched to my stripes so no...not spray bombed. So stop thinking that everyone on this forum is half assing everything and actually realize some of us are building top notch cars for once. I do not like people downing my hard work and craftsmanship.

 

Also 77nomad. I do care what carb is on my car because i have found out that if i run anything less than a 750cfm the engine is being starved of fuel. Guess you have never ran into that problem. Also it is a 383 with 6" rods, all forged internals with 4bolt main(not that you care) built by myself with a cost of well over 10k.. so dont assume a thing. It just irks me when people hate, and it sets me off. Sry just to get that off my chest. No hard feelings.

 

Hey I'll say this. I like the strips through the bay like that. I didn't relize the thread was that old. I just started at the beginning. You have come a long way. As for your power ok thats fine. I have a 383 as well. I won't boast my numbers. I don't even know them. As for your mirror image turbos I have only seen one set in my life and they were on a Nelson built small block. They were also billet.

 

Actually i just started my project this past january. I have a full build on it https://www.thirdgen.org/forums/body...stage-2-a.html. my 383 was originally planned to go in my z28 until the ls3 came out and now that's the route im going with on that. Needless to say i had a 383 sitting around not being used so i decided to drop it in my 89. Here is a link to my stage 3 full build of my z if you guys are interested as well https://www.thirdgen.org/forums/fabr...-pictures.html but as for the turbos, i have contacted nelson and that possibly the company im going to. Greddy was not up for the challenge, hard to believe haha.