ZZ3Astro

Hi everyone..

Been a while since I've checked out the Third Gen scene, but I am finally working on my 86 again. I had to give up on the turbo project due to other interests (RC Helicopters) and a lack of funding.

You'll all be interested to know that my friend is working on several Turbo V8 projects though, and I will be posting some photos as his project continues. He just finished the final cuts on the headers and I'll try to get some photos of the finished product.

Not one to be left behind, of course I'll be putting a power adder(s) on my camaro. For now, nitrous is the quick and dirty solution. After that, I'm going to go one of three ways..

BDS 8-71 and carbed.. You know this works! An easy 24 pounds of boost. Reliability and ease of tuning is a big factor here. You're rolling for under $4000 complete!

Single or twin turbo (probably intercooled) and carbed with bonnet.. this is a combination that is dirt cheap and I'd like to try it out. Mainly because EFI turbo applications are still classified as exotic due to expense.. making this kind of project fly puts turbocharging within reach of most third genners. This is a very likely direction I will go in, even if just for short term fun. Pricing is right on line for this project (two cheap manifolds or headers not intended for turbo use $300, two basic remanufactured turbos $1200, wastegate(s) $500, carb bonnet $250, MSD 6BTM $275, fuel pump caple of boost PSI + 7 psi $300 and a simple fuel pressure regulator with MAP tap.. Intercooler could get expensive if you want it to..

Single turbo EFI - this depends on the success of my friend's single turbo 383 and the amount of funds I have floating around. Now that I've seen how easy it is to make custom headers, I know this is a viable direction to go. I'm just not to hot about the overall expenses (i.e. $1500 for Fel-Pro, $500 wide band O2, $2000 for intake/injectors/thr body, $300 fuel pump, $800+ headers, $1200 turbo, $500 wastegate, $$$$ intercooler). Very unlikely you'll see me with this setup for a long time.

I just realized... I need to get to work or I'm not going to have any money to do this stuff!

steve

Apeiron

I think you're going to find that a carb wouldn't be too happy being fed by the turbos.

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1984 Silver Z28, 383 cid 4 bolt, ARP Fasteners, 2 1/2" Cowl Induction Hood, 600 cfm Performer Carburetor, Torker II Intake, Performer RPM Heads, XE268H Cam, Magnum Roller Tip Rockers, MSD6AL Ignition, Blaster2 Coil, Recurved HEI Distributor, 700R4, TransGo SK, 2.73:1 Limited Slip Dana 44, Terminator Headers, Custom 3" TIG Welded Stainless Exhaust, Flo-Pro Twister Muffler, 4 Wheel Disc Brakes, Oil Cooler

Guido

hey apeiron, it WILL work as a matter of fact. It requires a special setup of the carb though. Ive seen it done before

89ProchargedROC

yeah, it will work after a crapload of tuning. it is extremely hard to tune any blower/turbo car with a carb. EXTREMELY hard. do it if you want to, but EFI is a little more but it will save you less headaches. Also, if you aren't going to be making crazy horse, you can always get a custom chip.

Apeiron

I know it does work, my car had a Rajay on it when I bought it. Even though it was under the carb instead of blowing through it, it was a tuning nightmare and it was the first thing to come off.

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1984 Silver Z28, 383 cid 4 bolt, ARP Fasteners, 2 1/2" Cowl Induction Hood, 600 cfm Performer Carburetor, Torker II Intake, Performer RPM Heads, XE268H Cam, Magnum Roller Tip Rockers, MSD6AL Ignition, Blaster2 Coil, Recurved HEI Distributor, 700R4, TransGo SK, 2.73:1 Limited Slip Dana 44, Terminator Headers, Custom 3" TIG Welded Stainless Exhaust, Flo-Pro Twister Muffler, 4 Wheel Disc Brakes, Oil Cooler

ZZ3Astro

I can imagine the difficulties of tuning a draw-through carb on a turbo setup, but I'd have to argue the difficulty of the same on a roots blower. The hardest part is one a big roots with two carbs.. then you have to change twice as many jets!

I don't have any experience to use on tuning a blow through carb, but if it's perfection you're talking about achieving, it isn't any easier to tune a EFI setup.. in fact you could spend years tweaking DFI fuel maps and still not reach perfection. You could always spend even more money and get a wide band Fel-Pro system.. if you have the cash get the best! If you're like me, with things other than hotrods that consume most of your money, you have to look for other options.

steve

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1986 Camaro S.C. soon to be powered once again by my modded ZZ3
1987 Astro V8 Soon to be powered by a milder 350 than my ZZ3!

Real Street, unreal Horsepower!

89ProchargedROC

honestly, no offense but the wide band O2 of speed pro's is junk. i have talked to many engine builders and only a few like it because of the capabilities over the old DFI. But the new DFI kicks *** . The O2 is just not accurate. Everyone i know who uses speed pro with the wide band, doesn't use that feature anymore and just tunes it off a EGT.