OK OK, Yes Iam the same Iroczman380 that made the post about the 355 and how to put it in the 12's. Well it seemed like to do it with tpi, It probably wasnt an option, because in order for a 350 to run that fast it must hit high rpms 6000+ and Tpi is definitley not the way to go if thats what you want. I have been trying to come up with a bad *** package on a 383 or a 350 for a while now, searching this board constantly reading articles magazines and so on. Here is what I have come up with. I just came upon a 383 Stroker for 1000 with a short block fully assembeld, oil pan and up. Its all forged. Here is what I believe from my resarch will make a 500hp 383 stroker!!! Read it and believe. LET ME KNOW LIKE ALL OF YOU AWSOME THIRD GENNERS DID ON MY LAST POST!!!!!. I WANT THE COLD HARD TRUTH, DONT BE WORRIED ABOUT HURTING MY FEELINGS!!! I JUST WANT TO HERE YOUR OPINIONS, AND THATS THE BOTTOM LINE. OK OK
HERE GOES::


383 CI. SCAT 9000 CRANK, SPEED PRO FORGED PISTONS. BLA BLA BLA.

HEADS: NEED YOUR HELP, I WANT A HEAD WITH THESE SPECS:
190+ INTAKE CC RUNNERS, AROUND 60CC CHAMBERS WITH 2.02 AND 1.6 EXAUST VALVES. AFRS LOOK EXCELLENT BUT THEY ARE OUTRAGOUS. LET ME KNOW OF SOME OTHER BRANDS WITH THESE SPECS!!!!

CAM: XE274 OR 268H, BOTH VERY NICE FOR A 383. SPECS ARE:
477/480 LIFT WITH AROUND 230/240 DURATION.VERY GOOD BETWEEN 1700-5800RPMS (WHICH IS WERE YOU WANT IT WITH A 383)

FUEL SET UP: 30LB SVO INJECTORS, FULLY PORTED EDELBROCK RUNNERS AND TPIS BIG MOUTH BASE PLATE, PORTED PLENUM AND 52 MM THROTTLE BODY.

DRIVETRAIN- STREETFIGHTER 700R4 WITH 2400 STALL CONVERTER., 3.42 GEARS

1.6 ROLLER ROCKER ARMS CRANE GOLD OR COMP PRO MAGNUM.

EDELBROCK WATER PUMP.

CUSTOM BURNT CHIP AND DYNOTUNING.



AND thats it, i think that this will definitley put you somewhere between 400-500hp. with over 500ft lbs.

I know your all gonna say no way the tpi chokes it off, WRONG. The tpi will choke the motor after around 5500 rpms. (keep in mind this is the fully ported out tpi.)

this is good because with a 383 you make all your power at lower rpms, but still blow the doors off at the track!!! I know that everyone hates tpi, and says "SCRAP IT", "LOOSE IT" and go with a miniram or a carb, or something better. But With a stroker it is actually better than the miniram in some cases, because it makes more hp, and torque at lower rpms which is where a 383s power is.. I want your straight forward opinions, however i am going to do this here within 1 month or so, i will post dyno and track times. I will make a bet that this setup, if correctly tuned can and will reach 11's with all motor, and no nos.

Well thats about it and this is and will be my setup, once I find heads with those specs, (help out if you can) I will drop it in, I have already payed for the motor so theres no looking back this time!!! let me know what you all think just like last time thanks!!!!!!!!!!!!!!!!!!!!!

 

I am not sure if your serious or trolling here... I'll assume your not a troll and reply.

I followed your first thread, and it seems as if you are trying to do a service by posting great engine combos to make good amounts of power. Either that or you have an interesting way of asking a question.

My first question to you is WHERE DO YOU FIND A 383 SHORTBLOCK WITH FORGED INTERNALS FOR $1000?

Secondly, the XE268 and XE274 cams are not unheard of, so your not onto anything new there.

I'm also not sure how well an xe268 or xe274 will run with a tpi even with tuning. I am not sure what the lobe seperation is on the cam, as that is important when working with fuel injected motors.


Thirdly, I don't know of very many people that "hate" the TPI system, it was a great system in its time and is still very capable of putting down a good amount of TORQUE.

and last... to answer your question.... if you are running a TPI system the Vortec intake and vortec heads are a good (budget)way to get proven power to the wheels. Go over to the product review board or the TPI board and you'll see guys hitting the 12s with that setup. the vortec heads aren't to your specs, as they are the 1.94 1.5 valves, but they flow very well for a good price.


hope i didn't come across harshly...

 

The cam lobe seperation is 110 but I could have a custom grind for 112 which i think fuel injected motors like a bit better. I know that I might come across as a smart *** or someone who thinks they no there ****, however thats totally the opposite, I guess I just come across that way. Im just a very enthesed camaro addict that cant get enough horsepower, and wont live with 13's or even high 12's. I want high 11's or low 12's, with just motor. Im just throwing ideas out there trying to get opinions. I did however Call COMP CAMS and told them all the info about my car, the tpi, everything and I also told them I want to run 12's or high 11's, they said with a good set of heads like (210cc intake) and 2.02/1.6 valves that this goal is achievable, but he wasnt 100 percent sure about the tpi. Thats why Iam highly motivated to make a 11 second car with tpi. I will let you know when i do. But for now I just want some awsome info from all of those of you who have or will have a 383 that runs 11's and 12's and what you did and what you used to make it one bad mother f*ckin Mustang a*s kickin Third gen, the way it should be! well hope this clears some stuff up, but Im really just lookin for opinions on the heads and cam, what will hit 11's and 12's. Oh and about where can you get a 383 for 1000? THIRDGEN Classifieds, just sent money order out today!!!! ONE MOTHER F*ckin good deal that I couldnt pass up. THIS SITE IS AWSOME!!!! well let me know about heads and cam and all of you who know how to make a 383 scream!!!

PS: WIll I need to upgrade suspension to keep from twisting the frame?? Subframe connectors?? Torque Arms?? Let me know

 

ok.... took ya wrong... nothing wrong with what your trying to do..


check out spohn suspension, its one of the banners at the top. buy everything he sells and you'll hook!

seriously... sub frame connectors, torque arm, rear lower control arms, lower control arm relocation brackets, and good tires will get you all the traction you'll need.... I would hope at least!

and when you look at the port work it would take to make most off the shelf heads flow as well as air flow research heads, you'll probably realize the price isn't that outragous. those heads will get the numbers your talking with the cams your speaking of. I don't know that you'll see them numbers once the TPI is bolted on, but the torque will still be up there and you'll be running close to what your goals are.

why are you stuck on the tpi setup, by the way?

Check out ebay and you'll see plenty of LT1s and LS1s.
If you have ordered your 383 already for $1000, as you said, then you should be looking for a stealth ram or a miniram or even an lt1 intake which can be had in modified form for a pretty good price and flows right up to 7000 rpm.

however if your on a budget.. I would definatly consider your 383 short block, vortec heads, and a vortec carb intake. With the 383 you'll get pretty close to 400hp with the comp xe268 and a smooth idle with it. Not to mention you can run the xe268 with the vortecs out of the box. this setup should most definatly put you in the 12s with traction.. 11s will need better heads and a bigger cam... twisted wedge, dart, gm fastburn, edelbrock...pick your brand. they'll all have a set of heads they'll sell you that will get the numbers you want. don't expect to get them that much cheaper then a set of AFRs however.

the only reason I could see to stay with the factory TPI setup is if you already have the complete setup.

 

You are right on, I already have the full tpi setup. If you want to know why i want to go tpi its cause, Of all the bolt up/cost problems with other manifold designs. an lt1 inake (i looked into) must be highly modified and drilled and tapped for new bolt holes. The only heads that will even work from the factory with the lt1 inake is lt1 heads or 1t4 heads. I dont Want hsr, I want to be able to be running at 2-3000 rpms, punch it and fly. Stealth ram will rob me of alot of low end torque and a good amount of midrange power that the tpi produces endless amounts of. The only other setup I have considered is the Lingenfelter setup. With I think long runners but has a square type plenum. Looks nice. I would also go with a mini ram, but then were talkin 1000 just for the fuel set up when I already have a perfectly good tpi just waiting to be ported and gasket matched!!!!! And as far as carb goes, Its basically like this---- I dont want to. So even after all this when it comes down to it Ill go tpi. And since I like it already I miswell try to make it hit 11's and high rpms. And hey if I cant Completly hit 11's then Ill just get a 50 shot and not tell anybody. Well I bet for heads ill end up with edelbrock or maybe a gm head with very aggresive intake runners 200cc and up. And what about this cam Comps xr276-12, Im not quite sure on the specs but Ive seen a few bad *** 383's using this cam. Maybe someone else no's.

 

Check out my sig if it helps......Im making a bit over 500hp at the crank....414 at the wheels. YES YOU WILL HAVE TO BRACE YOUR CAR UP!!! If you do nothing to the suspension...prepare to do nothing but light your tires up. I have the comp 286HR and even with a carb, its hard to idle.....I wouldnt want to think about with TPI. From what I remember about tuning PROM's, its hard to get the computer to run right after about 225-230@.050 duration. Thats not saying it cant be done......but throw a carb on it...do a little adjusting...and you have the ultimate mass air intake.... Good luck.....

 

Cost? Getting 500hp out of stock TPI NA set up? I've seen guys struggle to get 300rwhp out of stock TPI set up that been ported and has aftermarket runners. Get rid of the stock TPI set up if you want to make 500hp or IMHO.

Quote:

Of all the bolt up/cost problems with other manifold designs. an lt1 inake (i looked into) must be highly modified and drilled and tapped for new bolt holes.

Yes, Mcmillian sells them for $400-500 and they are light years ahead of a stock TPI set up. LT1 intake can support 400rwhp+.

Quote:

The only heads that will even work from the factory with the lt1 inake is lt1 heads or 1t4 heads. I dont Want hsr, I want to be able to be running at 2-3000 rpms, punch it and fly.

With stock TPI set up on a 383 the motor will likely be wheezing ~ 4,200rpm. With ported 4,500rpm. You'll need aftermarket stuff to pull the rpm's. The stock TPI unit was designed for a 305.

Quote:

Stealth ram will rob me of alot of low end torque and a good amount of midrange power that the tpi produces endless amounts of.

...and stock TPI is dead at 4,500 rpm...

Quote:

The only other setup I have considered is the Lingenfelter setup. With I think long runners but has a square type plenum. Looks nice. I would also go with a mini ram, but then were talkin 1000 just for the fuel set up when I already have a perfectly good tpi just waiting to be ported and gasket matched!!!!!

Don't waste your time with the TPI set up, unless you like spending money. Get the Lingenfelter or the Miniram instead.

Quote:

And as far as carb goes, Its basically like this---- I dont want to.

It would be much easier to do what you want to do with a carb instead of TPI. I don't like carbs but if I had to choose between messing with a stock TPI set up and trying to get 500hp or a carb, I'd go for the carb in a heartbeat & be happy about it.

Quote:

So even after all this when it comes down to it Ill go tpi. And since I like it already I miswell try to make it hit 11's and high rpms.

Forget about high RPMs with stock based TPI, it's not designed for it. Get another induction system.

Quote:

And hey if I cant Completly hit 11's then Ill just get a 50 shot and not tell anybody. Well I bet for heads ill end up with edelbrock or maybe a gm head with very aggresive intake runners 200cc and up.

If your building a forged 383, build it right and go for a 150 or better yet 250 shot. Cheapest hp you can get.

I'm with Rage:

"I am not sure if your serious or trolling here... I'll assume your not a troll and reply."

Quote:

And what about this cam Comps xr276-12, Im not quite sure on the specs but Ive seen a few bad *** 383's using this cam. Maybe someone else no's.

That cam is way too small for a 383 IMO. Many 5.7 LT1's will run bigger cams.

I suggest looking at swapping in a LT1 or LS1 either can get you into the 11's with a lot less work that what your suggesting. It's pretty easy to get 400+rwhp out of an LS1, that's almost 500 flywheel and very close to your stated goal. If you want a stroker an LT1 stroker would make an outstanding engine.

BTW the LS1 in my sig has a cam about the size your talking about putting in a 383. LS1 usually go with smaller cams that SBC engines.

Just my .02 your mileage may vary...

 

I think that the first time you said TPI was a stretch it about covered it.. but anyway...

I agree about trying to pull 500hp out of a TPI, may as well try pulling a bunny out of a hat while you are at it. It is not going to be easy by any means, and you will be leaving power on the table at that sorta power level. Not saying it cant be done, but there are better ways to make power with an engine.

 

A stock TPI system, will get you closer to your 500 HP goal than you know. Sell it and use the money to get a good induction system. TPI is not going to cut it for you, unless you want to change out most of the components for aftermarket ones anyway. If you are building a 383, consider the HSR, yes you will lose a bit of bottom end torque, just as the "rags" did, but you also are planning on building a 383. Even with the lose, you will have more torque than they did. How much torque do you think you chassis will handle before the tire, and rear, go up in smoke. Torque is king, but it has to be usable...

 

In my opinion that cam is not right for the RMP range you described. Too much duration and too little LSA.

 

OKOk Im not a troll!!!! Iam telling the truth. I Do not bs. I seriously did just buy a 383 stroker motor, Short block for just under 1000. One hell of a deal. From a user on this site, brand new fully assembled.

Ok Iam going to try this one more time. Thanks to some excellent replies and some great emails, I think I might have a winner setup. You guys be the judge: Here goes

383 stroker Short block-- scat 9000 crank with speed pro Forged pistons.

Lt1 Intake Conversion
30lb SVO Injectors
52mm Throttle Body
AFR 195's or something good
Comp Cams XE 276HR. 226/236 @.50 with 480/490 lift with 110 lobe seperation.
1.6 Crane Gold Roller Rocker Arms
Edelbrock Tes Headers/w ypipe
American Thunder Catback,
Flowmater 40 series
Home made Ram Air Setup.
Gutted Cat, No Emissions whatsoever.
3.42 Gears
B&M Flywheel
B&M 2800 Stall Converter
Pioneer 8 inch 400 balancer
Edelbrock Water Pump
Built 700r4 with racing clutches
Corvette Aluminum Driveshaft.
Fastchip Custom Burn Chip

Alright I think thats everything , I already have the headers, built tranny,catback, flowmaster, flywheel, gears, balancer, , rocker arms, ram air, water pump and motor. The rest will be here soon. I have two questions for all you guys. I know I wanted to use tpi, but I just recently checked out lt1inakes .com and it really didnt seem that hard. SO I think thats what Im gonna try. Heres the q's??

1. Will this setup, be pushing 500hp at the flywheel??

2. Alot of people seem to think the cam is to small?? What Cam specs should I look for with this 383. I dont want to go over 6000 rpms, and will not. I want a cam between 1900-5800. Its not good to rap a stroker out. ( I think)

3. Last but not least. ANy Ideas on a substitute on heads if afrs are not an option?? Dart Iron eagles any good?? Edelbrock??? Pro Topline??? LEt me know.

 

One more thing

What times at the track can i expect If all goes well>??. ( LEts just say that I will hook up)

I might consider using a 50 shot of nos as well.

 

If youre using TPI....it will be a hard cam to tune because of the 110LSA. If youre set on 110LSA, and it has to be tuned anyway....Look at the COMP286HR, which is what I have. The duration is a little shorter....but "should" work with the TPI ecm. Why are you afraid to go over 6000rpm? My 383 loves to rev....if you have all those forged parts like I do...dont be scared. It wont break. Also....dont plan on making power past 4500rpm(maybe4800rpm) with the TPI setup on it, but it should be nice with the LT1. Im partial to AFR's....I know they are expensive, but you get what you pay for....and you dont have to machine them as much and port, etc. Like I said before, with my setup I have over 500hp at the crank, and actually its pretty mild. Im thinking about going with a bigger cam......like the COMP304HR. good luck...

 

Hey Kyle, Im curious as too how your car runs,

youve got a carb on there, and well DAM youre times are good.

I would give anything to run 11.8's. Theres not a car on the street that could compete with those times. Can it be driven on the street?? is it just a weekend cruiser or daily driver?? Does it idle real ruff or is it just a bit lopey. Just curious, I know fuel injection is nice, but it seems any carb can match any fi setup's power and usually can handle more. Where is your power at?? DO you have a lot of low end and mid range , or do you just have power everywhere?? well let me know, but Man those times are nice, its tempting to just duplicate what youve done since Ive already got the 383 but havent bought heads and stuff yet. Why dont you just give me some more info on your setup, and tell me the part numbers of that cam and heads, and some of the other things, well let me know thanks,

Iroczman380

 

Well....it can be driven on the street. I just dont because its soooo loud and the fuel mileage. If I put an Edelbrock carb setup for the street and some Flow's Id drive it alot more. It idles kinda racy.....about 900-1000rpm but is really lopey. It sounds like a big block. I have power all through the powerband......but it really wakes up about 2500rpm....mostly because of the single plane intake. If you had a dual-plane, it would have alot more torque.....but hell I think I have enough. I drive it to a local cruise-in on Sunday's sometimes. Its fun to watch the older people hold their ears when I pull in...hehe. Ill make a list of my parts for ya.

350/.030 over 4bolt main(2pc seal)
Scat 4340 Forged Crank
Scat 4340 I-Beam 6in rods
JE forged alum pistons
COMP 286-HR (springs, lifters)
Manley Race Flow Valves
Pete Jackson gear drive(noisey)
Harland Sharp 1.6 RR
ARP bolts everywhere
Edelbrock Victor JR intake
Holley 4150 carb(750cfm)
AFR 195's
MSD ignition
Hooker 2210 Long tubes
Custom 3in dual exhaust into DR gas X-over

 

1. no it wont make 500 hp on motor alone.with your setup.youll need a poweradder (supercharge,nitrous,turbo)
2 u going to need to go at least 6500 rpm to make 450-500 hp.if u want to stay at 5800 limit then get a poweradder.

 

Mine makes 414hp@the wheels at 6100rpm....you dont have to go past 6500 in a 383. He should be close to making 500hp at the flywheel, depending on cam and heads........

 

hey iroczman380:

I see you don't have the budget for AFRs... so here is my recomendation if you are going to keep the TPI.

If you want to do low 12s or possibly high 11s I would go with the Vortec TPI intake and the Vortec Iron heads with better valve springs. I would then find the cam that would work best with the stock TPI and the Vortec heads. Like I said earlier, check out the product review board and the TPI board as there are guys in there running stock L98 short blocks with the setup into the 12s. They are only making 260-300 hp but the torque is getting them there.

With your 383 shortblock and the TPI bolted on top, with possibly siameesed runners and maybe gasket matching the heads and intake I think its very likely you could hit low 12s with slicks and possibly 11s with a little shot of the juice. Like someone said earlier though, run a good 100-150 shot. You do have the forged internals, so you might as well get your use out of them.

So to summerize here.... Keep your TPI setup (Which you have clearly stated you WANT to do), forget about 500HP N/A, get the TIMES you want on a budget, and have a good running TPI setup that makes gobs of torque.

The secret to the times you want is torque, traction, and consistency.
The TPI can give you that, but unrealistic goals of 500HP from a stock TPI will bring you nothing but a big disapointment.

Also try and remember a few important points here:

1. There is no replacement for cubic inch displacement. (with a 383 you've already taken this into consideration)

2. Its not about having the biggest parts, or heads that flow the most, or the biggest cam you can stuff into your motor. Its about having the right components. Matched components. Proven combinations.

The TPI is not meant to rev to the sky, and its not meant to feed a monster engine. It will however be a great torque motor, and a reliable setup for what your looking for.

 

somethig to remember, that IMO is often forgotten.

Power is not the only thing you need to turn fast 1/4 times. Your suspension, driveline, and chasis is important as well.

you can be making 1 million HP and 1.2million ft lbs of torque at 1 million RPM but without getting the power to the ground, your not going anywhere. So with that engine your putting in you may want to onsider some new LCAs, LCA relocation brackets, some refreshed shocks, SPOHN Torque arm, and most importanly subframe connectors.

I know it seems like a lot, but getting the power to the ground is as important as having the power to begin with.

 

Very good points about the suspension.....You can do that on a budget also. There are some things you can go cheap on....like the panhard bar and LCA's. I "boxed" my factory ones and put new Energy bushings in them....they do the same things the expensive one's do. But, a good torque arm....like the BMR trak-bar will do wonders. You can adjust your pinion angle, etc...all important things for transferring power. The biggest thing is the SFC's, and strut tower brace, along with the Spohn wonderbar. Those all together will allow your car to handle the torque of a 383. My last thought.....if youre going to drive mostly on the street...go with F.I., if youre going to race it mostly....go with carb. If you keep F.I. like the TPI or LT1, go with a cam that has high lift and short adv. duration. The LPE219 would work well with a 383.....as would a dual pattern cam, or NX cam from COMP......good luck

 

irocz80man:

https://www.thirdgen.org/classifieds...tgo?adid=24934

thats a complete lt1 setup you can bolt on to your 383... its cheap.. and with a good tune you can keep your factory electronics. essentially you'd have the LT1 EFI system bolted on top of your 383 short block and you would be using your TPI electronics/ecm.

now go find heads and you've got a kick *** motor.