lt1performer

hay guys im building a 383 stroker for my 93z28 i want to run in the low 11s or high 10s. i know im going to use all forged insides. i want to keep my Z N/A if i can i dont have a problem with NOS but i dont want to use a turbo or supercharger im looking for some advice any one that is running in these brackets. no i want to be able to drive my car any time i want. this is what im thinking about so far. LT4 intake with race port and polish, 58mm throtal body, 9in rear end, 373 gears, and a 150 shot. i dont know what cam or heads i want to go with im thinking about using the stock heads with a race port and polish to match the intake what do you guys think i will benafit from as far as what i should put in the motor

95CamZ

iTrader: (3)

Low 11s high 10s is easily attainable with the right combo and enough money! I think u need to be a lil more detailed into ur setup though in order to say if you really can do it! As far as using the stock intake and stock heads and having them worked yes they can produce good numbers and have a custom grind to match. You need to get in touch with Lloyd Elliot or AI etc and they can help you put together an effective combo! Also dont forget if you put enough time into the suspension and dial it in right it will get you further with less power as far as track times!

TwoFast4Lv

iTrader: (8)

Not nearly as hard as it was 10 years ago

James Montigny

iTrader: (13)

Very doable, even without making it "unstreetable"
Weight reduction will help a ton as will a proper suspension.
Shop around, see what various shops recommend (rotating assembly, heads, cam, etc)
Pick the option that fits your goals, taste and pocketbook.

I had similar goals for my current 383 project.
Click my sig, page 6 has the build/progress details.

wickedbusa

iTrader: (3)

My car is running 11.2's @ 125. It's a forged 383, but I'm running a blower though. Still using the stock LT1 intake, stock heads (with some major work done), and no weight reduction. In fact, my car is even heavier than stock since it has a pretty hefty stereo system upgrade. Still streetable with all the amenities including AC and heater.

slomarao

iTrader: (6)

Dont buy LT4 stuff, get the stock castings ported. Call up LE, he ll set up nice and good.

BlacksickspeedZ

I've got a built semi low compression 383 and run high 11's. Built a high compression fully forged 383 with a good set of heads and cam and you should have no problem running low 11's high 10's.

lt1performer

I called LE to day when i got home from work we talked for a good hour+ we settled on the LE3 heads and were trying to find a little more agressive cam then the one he has in that package. The price he gave me was way lower then i thought it was going to be i was thinking i was going to be paying around 3+grand but for a little under 2 grand its worth every penny. right now the plan is to make 500 at the wheel with heads and cam. im also going with a 58mm throtal body and im porting and polishing the intake. im also going with the summit underdrive pully, pacesetter longtube comp headers, true duels, and im going to have have my car tuned by pcm's for less. im also converting over to mass air. im planing on a 3000stall from yank the and some were down the road a 150 shot. the only thing im not sure about is the 700R4 tranny i dont think my tranny will hold up the only thing i can do atm is try and build it a little to withstand the power im going to make?

James Montigny

iTrader: (13)

Great to hear you found a combo to meet your needs. Lloyd will hook you up with everything you need.
The 3000 stall will really help tame the cam's street manners.
Be sure to talk to Yank about your setup and future plans, they'll get you set up with the right converter.
They were great when I talked to them last year.

I doubt you'll blow the tranny to bits on your first N/A run, but it probably won't handle
hard launches for too long. I'm in the same boat with my stock 4L60, looking to replace
it over the winter with something a little beefier. Same with the rear end.

Looking forward to hearing about the project's progress.


Edit: FWIW, Tony Shepherd managed 479 rwhp 432 rwtq N/A with his old 396 using a (rather aggressive)
Hydraulic cam and orted 190cc heads. He put that down through a stalled Th400 and 9" rear IIRC. Back in 2004
So 450rwhp is doable with an HR.

gatorhead

iTrader: (4)

For the tranny give Frank at Performabuilt a call. I have his stage 2 and a 9" custom 3k stall........excellent unit!

lt1performer

im going to have to check but i think my boss has a 4l80e and a turbo 400 at the shop i work at ill see how much he wants i know the 4l80e is build. i dont think he will let me take the turbo400. im sure the 4l80e will handle the power. let me know if you guys think of anthing else i should look in to.

ABA383

iTrader: (1)

I think my combo may be right up your alley...PM me sometime and I'll give you the specs on what I've done... All N/A drive it anywhere and still get 20 mpg on the highway...and all with a small cam, too...

--Alan

IH8FORD

iTrader: (6)

It wasnt very hard to do it 10 years ago. lol, I did with stock ported heads and intake and a cc 306 camed 383. It is dead now though time to see what I can do now.

flyinZ

iTrader: (15)

If you do your research and talk to the right people, you'll hit your mark..no problem.

Alan, you have a PM.

slomarao

iTrader: (6)

I wouldnt set your mark on 500rwhp. There are only a handful of LT1 cars with 500rwhp NA. And most of them are running a SR cam.

I dont mean to be the bear of bad news but your goals are out of reach with the parts you plan to use. To even hit 450rwhp i would tell you to go SR cam, monoblade tb, 12.5.1 compression and may convert a intake over.

96capricemgr

iTrader: (1)

Thing is there is one company who has repeatedly hit 500rwhp some through automatics several with LT1 intakes too.

They are hitting 440rwhp through automatics with hydraulic setups.

Comes down to are you worried about reliable power or are you just out to get yourself stroked. Most of you want to get yourselves stroked and that is why these lofty goals are so seldom achieved.

TwoFast4Lv

iTrader: (8)

hell we had over 440 years ago with a A4

lt1performer

[QUOTE=slomarao;10269033]I wouldnt set your mark on 500rwhp. There are only a handful of LT1 cars with 500rwhp NA. And most of them are running a SR cam.

I dont mean to be the bear of bad news but your goals are out of reach with the parts you plan to use. To even hit 450rwhp i would tell you to go SR cam, monoblade tb, 12.5.1 compression and may convert a intake over.[/QUOTE

im talking to LE we have the parts all picked out ill hit my mark

96capricemgr

iTrader: (1)

I am not aware of Lloyd ever having helped anyone hit the 500rwhp mark NA. If there are any examples please post them.

Then again the ET goal does not take that mch power so maybe he is saying he can help you hit the ET goal.

IH8FORD

iTrader: (6)

[QUOTE=lt1performer;10269310]Not to start a who's heads are better thread but I would seriously consider the AI heads if I were you. At least call Phil and see what they have to offer. that is probally what I will go with this time.