pearlphoenix

iTrader: (1)

hey everyone and thanks in advance. its about time to park the car for the year and i have quite the collection of parts for this winter. my biggest question is what intake to get for my build followed closely by some help with head selection. the short block is nearly complete. my goal is 400rwhp and car will not be my daily driver. i have all forged internals, CR should be around 10.6:1, have a comp cam xe284, (240/246 @050, .507/.510)lift will be a bit higher as i will be using 1.6 rr. also have a probuilt tranny from dana and an edge 3000-3200 converter. i have been leaning to the dart pro 1 215cc heads but have not purchased them yet so im open to suggestions. i was probably going to wait for the bbk intake if it actually becomes availible this winter, and i dont really want to cut my hood brace for the hsr, but if that would be more suit for my application i would consider it. also considering the 150 shot TB plate kit, but would probably only see the track a few times a summer at best. any and all feedback is appreciated

doc

Are you going to run a carb or EFI? The cam is too big to be EFI computer friendly. It might work if the LSA is 115* or 116*.

Also, what size engine are you building up?

Guest

I personally would not sit around waiting for a product that doesnt exist and has an approximate and vague release date. If it comes out, then I'd be considering it... otherwise you will be sitting around waiting a long time. The HSR didnt come around very fast either.

pearlphoenix

iTrader: (1)

well im going to try to get efi to work, i know a few people are running cams close to this one. and the engine is a 383

AC

iTrader: (3)

The cam I run in my 383 is:
[Int: .520 / Exh .540 Duration Int.236 Exh.248 LSA: 113] and my EFI works great....after a ton of DIY tuning.

I also run Dart 215cc heads.

Forget about the BBK and get yourself a stealthram. Wait until the BBK unit has been out for awhile and gets some reviews and power ratings from someone outside of BBK.

mattsv8_03

iTrader: (2)

slp makes a good inkate. dont wait for bbk it will be forever and proably wont do what a good slp unit does

doc

I agree with these guys above. For a 383, install the Holley Stealth Ram. For the cam, I would not have a duration above 236* at 0.05 valve lift... And make sure you get an 114* LSA. Dont let anyone talk you out of an 114* LSA. They are not going to tune your car for you.

Are you going MAP or MAF?

pearlphoenix

iTrader: (1)

ahhh the MAF vs MAP debate. to each is there own on this one but im pretty sure im going to stick with MAF. OK i will go with the HSR then. do you feel the dart pro 1 215cc head is suit for this. i have a set of gmpp votecs but feel they would choke this 383 without a ton of porting.

GTA90X

iTrader: (2)

Check out this current thread if you haven't already. I'm considering selling my HSR and toying around with something like this. Looks like fun!!

https://www.thirdgen.org/forums/alte...-how-will.html

HiTech5

iTrader: (4)

I have to disagree with Doc on the lobe seperation. In my opinion, the 114lsa will be lazy. I have not run more than 112 lsa with no tuning problems. My buddy ran a 248/248 solid roller with his MAF 383.

Right now I'm running a solid roller with 110 lsa. The motor winds up so much quicker than the 112 lsa cam I had. The car idles and drives well. It even passed the Ohio Echeck this year.

pearlphoenix

iTrader: (1)

yeah i thought about that, i saw and edelbrock or professional products manifold with fuel injector bosses in a northern auto parts catalog, but i didnt know what i would do for the plenum and throttle body. i enjoy doing things different but i would have to be able to piece it together, me and custom sheet metal dont get along so well.

pearlphoenix

iTrader: (1)

yeah we dont have to pass emissions here so that is not an issue for me. it will just be how much frustration i can take during the tuning process. i enjoy a choppy and rough idle, but also dont want it to run like sh*t cause of a poor tune. as long as i can get it to run and drive reliably i will be happy, even if that means some hp less than the gurus out there

Orr89RocZ

iTrader: (20)

MAF is easy to tune with wideband o2 air fuel gauge and keep open loop. if you want closed loop then keep LSA wider to keep overlap down

Else, if your like me run open loop and tune that air fuel ratio. I run 109 lsa on a 230/245 cam and i run just fine. Hydraulic roller tho so its smoother than flat tappets

I make 400whp on this 383 and run HSR with MAF. I have new custom MAF sensor that i tuned, pretty much the same MAF as Doc constructed. Runs good but i have yet to really test it for power increases. Stock TPI style lid and k/n drop in filters will support 400 whp on descreened stock MAF

I have AFR 195's and 11 to 1 comp. I would lean towards Dart 200cc's for a 383 but the 215's could work out fine. Just have to realize the 215's are 1206 port and you have to get the newest casting of the HSR and port match it to fit a 1206 head. Dart 200's should flow enough to make 400whp or close to it

fun Pain

I think a BIG shot of Nitrous would be a great INTAKE......

doc

pearlphoenix: Exactly what car are you putting the 383 into?

pearlphoenix

iTrader: (1)

its going into an 86 trans am

doc

I have a few recommendations for you:
1) go with the HSR, and polish the inside runners,
2) update the '86 ECM to an '87 to '89 ECM (there is a technical article on this change),
3) buy a Hypertech Eprom (from Summit Racing or other place),
4) for now, descreen the MAF sensor,
5) learn to program your own Eprom chips (its not as hard as you might think)
6) check out Orr's 383 HSR posts for a bunch of stuff, but especially his large cold air intake and the large MAF (he and I have fabricated 3.5" MAFs)
7) cam specs 23x/23x; LSA 114, valve lift ????
8) buy a better drop-in radiator (Griffin or Cool)
9) when you pull the existing engine out of your Firebird, pull the engine and tranny as a unit (this pays dividends when it comes to put it all back in)
10) take pictures when you disconnect stuff and label the connectors as to where they go (this is a huge help when you put it all back together)
11) Install 30#/hr Ford EV1 fuel injectors (Summit Racing part # FMS-M-9593-B302; I am running 24s with the SuperRam, however, I am on the verge of running out of fuel, my fuel pressure is set at 52 to 54psi)
12) install an adjustable fuel pressure regulator (I have a Holley unit; you got to have this to help you tune the WOT).
13) install a larger flowing fuel pump in the gas tank (dont put this off).

pearlphoenix

iTrader: (1)

thanks for all the info doc. i had a hypertech chip and didnt see much benifits to it, ill see if i still have it laying around. i plan on buying the moates chip software and giving that a whirl, i all ready have an aftermarket aluminum radiator with external trans cooler, i have all ready done one engine swap with this car as it was an origional 305 car, but thanks for the pulling advice. i all ready have an afpr and 255lph fuel pump. i may go with the hsr but wanna see some reviews on the pro flow xt first, if its very close i may go with that.
----------
and whats with the 87 to 89 computer, i know the 85's ecm are junk but 86 is still a 165

doc

I thought that there is a difference between the '86 ECM and the '87 like I have. Look around for posts on this. Ill look around also.

The Hypertech memcal is to give you a memcal that you can swap Eproms in. Now again, if I remember correctly, the Eprom in the Hypertech memcal is not soldered in, so you can easily remove it and replace it with a re-programmed Eprom (chip). Sorry, I did not fully developed this thought.

cronsformula350

I have a recommendation. If you aren't planning on making over 550 hp, don't get anything bigger than 200cc's, the motor will be lazy, unnless you put a turbo or supercharger on it, the big runners, will make the motor lazy. Those vortec heads are great, but you can't run too big of a cam without some reworking the heads. The vortec's are I think around 170cc runners, but thats great for air velocity, I have prted heads and had a job at a machine shop, porting heads. Velocity is very important, especially for a street car, it responds very well to throttle input.

On my 89 formula 350, I have World sportsman II heads, out of the box, are good for 550 hp, I will port them later on, but wanted to try them stock first, to see how much of a gain at the track I can get after I port them. I have my 91 intake base, port matched to the 1205 intake gasket, so it matches the motor great, the cam is advanced 4*, has comp cam 1.6 roller rockers, and go to my site, listen how well my motor responds with the fresh new dual exhaust on it at www.cardomain.com/ride/471099

Just get a 6 banger hood from a firebird, and cut that up for the HSR on your motor, thats what I'm doing, but using a nasty scoop on it too, check that out also, and my HSR I ported.. The HSR is only about $680 and out of the box, is good for a conservative 35hp as found in GM high tech, so a lot more bang for the buck! I was able to get my iroc in the 13's with a TPI, and I'm going to get it into the 12's with a TPI, stock cam and just great suspension. Later on I have a nasty cam, I'll post the cam card.

Orr89RocZ

iTrader: (20)

195cc-200cc's from trickflow/brodix/dart and especially AFR all feature good velocity in the ports with decent flow numbers. on a 383, 190-200 cc is a great sized port. my motor is not lazy at all and its not putting down the torque most 383's do with these heads/intake. i couldnt imagine another 30-40lb ft

pearlphoenix

iTrader: (1)

ok guys, ill go ahead and get the afr 195 eliminators then. but i am still really curious about the edelbrock pro flow. that should be out in about 2 weeks and i really wanna see how that does, and with a price of only 415.00 it doesnt look like a bad deal at all.

cronsformula350

well sometimes the smaller 170 CC runers aren't a problem if you aren't planning on going over 450 hp, the motor will be fine, especially if your going to run a TPI intake.

The proflow setups work great and they make great power and are great for drivability on the street and tuning at the track/street.

Orr89RocZ

iTrader: (20)

proflow should be comparable to HSR if not just a tad bit behind. I'd be surprised if it surpasses the hsr by much but it looks very similar to HSR. I'd run it to be different. STill could get the power you want with it

pearlphoenix

iTrader: (1)

yeah thats kinda what i was thinking with the pro flow. as far as the throttle body goes, as long as you get the right connectors for the tps and iac everything should be fine right, im pretty sure a tb off like an ls1 uses the same volts as our cars do for ecm input, (.55-5v)

antman89iroc

As far as the BBK... still waiting... Hard to build a motor around an intake that doesn't exist. I doubt it'll be soooo much better than anything currently available.

I'm running HSR and it's a good all rounder. And I think 400RWHP is definatly in reach. Especially with a 383. An all out motor you might want to consider a single plane EFI.

Hood clearance? If this is a Camaro you really dont have to do much. Look at this pic. I didn't have any problem doing it. Just a little work with a die grinder.

And nitrous is a really good plus!

The last pic is totally gratuitous!!!

1989GTATransAm

iTrader: (3)

"The last pic is totally gratuitous!!!"

There were other pictures?

DyingYoung138

I swear there is an Iroc in that picture... I just can't seem to find it. lol.

antman89iroc

Yeah that's what my buddy said! It's like "where's Waldo"! And there are lots more...

cronsformula350

Well the wider LSA is more for low end power, 112 or tighetr is for more high end. If its rarely going to see the street I'd go to a 112 or tigheter, up to a 106, but how high do you want to rev this motor?

That edelbrock intake will make more torque than the LT1's, and the version edelbrock makes that is for replacing the LT1 intake wil also make more torque, thanks to its longer runners and space between the intake valley and runners, to keep the hot oil off of it.

vipershark11

iTrader: (6)

so was the last picture there to show if you run a HSR you get hot chicks? i think picking the HSR was the best choice i ever made in that case.

antman89iroc

Depends on the chick! In this case the hot chick helped me get the HSR. But yes, I think hot rods and hot chicks go together well. She likes it best when I "get on it" and she can feel the power!

Orr89RocZ

iTrader: (20)

haha before subframe connectors you could sit in the car and 'feel' the power. shakey shake.

IROCThe5.7L

I'm also waiting on the BBK intake. If it's not out by next spring, hello SR. I lost to a SRT4 last night. Not waiting a whole summer again for a intake.

cronsformula350

Well that SRT4, is like any 4 banger with a turbo. If they push 15#'s of boost, it makes the motor behave more like it has twice as much displacement or two atmospheres.

Then after that, they will begin to really make serious power.

Don't feel less than them, they have a turbo, if you did, you'd waste them!

Just stall the converter to around 1250 or what it holds to, then when you launch, take it till it is around 70 mph, then let off, for a TPI without any work, thats good enough. Then they'll want to be able to beat you off the line, but you'll fool them, and make them think your cars faster if you blow them away off the line and you'll scare them away and build a reputation for being the fast guy around!