nutzar4

I have a 1988 trans am gta with alot of mods i was wondering how much horsepower i should make.

It has a 350 in it with a stroker kit(eagle crank and black jack pistons)
competition cams valvtrain kit(cam 1800-6000 rps, valve springs, lifters, timing chain and gears, ect.)
transgo full shift kit
E3 spark plugs
iron heads with oversized valves
it is tpi with 36# injecters, large intake runners, adjustable fuel pressure regulater(35-75psi)
hedman headers with D shaped exhaust ports, 1 5/8 runners to a 3" collecter
Hypertech ThermoMaster chip
everything else stock gta material (oil cooler, twin 12" electric fans,ect.)

I apreciate anyone who can help me estimate this thank you guy :]

joeblue83

iTrader: (8)

what kind of heads and cam. And did you buy an off the shelf chip for your application?

nutzar4

The heads are off a 93 van and have larger valves then a normal 350 head (i dont know the valve sizes offhand) the heads have a stamped II on the sides i also do not know what tht means. As for the cam http://www.summitracing.com/parts/CCA-K12-246-3/ thats all the specs. I dont know what u mean by and off the shelf chip but here is the link for tht also http://www.summitracing.com/parts/HYP-228822/ .
Thank you for your help joe I apreciate it.

vetteoz

iTrader: (13)

Have you run it yet?
Bet it will run like a POS because Hypercrap chip only does minor adjustments and turns on fans earlier.
https://www.thirdgen.org/forums/tpi/...ster-chip.html
https://www.thirdgen.org/forums/afte...jet-chips.html

Does not adjust for the massive injectors you have in there so will be ultra rich (some run 24's in 383 with correct tune )
Need a custom chip tuned to suit cam / injectors

Cam is mismatched because your intake will be dead by 5K but cam goes to 6K .Long runner intakes ( TPI ) do not make power over 5K
Check out
http://xtremecarzone.com.au/index.php?showtopic=386

Heads don't sound like anything special ; even if they were would not overcome the restriction of the TPI intake feeding them

nutzar4

Thats what I got the fuel pressure adjuster for. I also have a o2 sensor that reads a/f ratio so i can tune it. I got the chip to erase the stock prom and allow me to be able to use the injectors i needed. I didnt run it yet cuz im wating for a couple other small parts to come in. So make a long story short your saying my engine will not be able to run even with a custom ram air intake system me tuning the a/f ratio with the o2 sensor and fp regulator. The chip is made to bypass the prom cuz if i had the stock prom i would not be able to ajust the a/f ratio and fuel pressure.

vetteoz

iTrader: (13)

Most likely you will have to turn the pressure down so low to get A/F right, you won't get correct spray from injectors
Less than 30psi @ injectors = dribble
36's are massively big for a engine of your specs.
I'm making close to 500Hp with 32lb on my 383 w/ 205cc heads/ big cam / and a single plane intake

vetteoz

iTrader: (13)

Is it a wide band O2 sensor ?
If it is a narrow band won't tell anything worthwhile.
NB is only accurate around 14.7AFR ; with your injectors it will be rich off the scale

Changing fuel pressure changes fuel delivery across the board.
Does not allow for say; less fuel at idle / cruise and more at WOT
Adjusting fuel pressure allows for minor adjustments from stock tune ; not radical changes like bigger engine ,big cam and big injectors

Don't believe me , ask what tune you need for your specs over in tuning dept
https://www.thirdgen.org/forums/diy-prom/

Hypertech does not allow you to adjust anything different from a stock chip.
It has a fixed tune just like the stock chip ; but different.
Need tuning equipment and software to adjust actual tune

KNBlazer

stock intake? You should maybe get it ported or go with either a loudmouth from ASM or hell even an edelbrock.. but then again I don't know much about this so ...

nutzar4

Its a wide band o2 sensor, I had a guy in a machine shop so specializes in stroker moters saying tht i would need 44# injectors minimum to get enough fuel for the engine.

zraffz

We kinda need to know what heads they are... I imagine they are swirl ports but I can't say for sure. It really doesn't matter what size your valves are, bigger isn't necessarily better!

Tonysz383

Wow, the cam that you picked is way too big for your combiation. With the stock intake I would use can with no more than 212 deg dur. @ .050. The stock intake runs out of steam at about 5k rpms with a 350 and even lower with a 383, So a cam with small duration will work better.

nutzar4

Eventualy I will be getting a hi-flo manifold, 58mm tb, ect. The more important question i would like to know is if my car will be able to run and drive nicley with my combination.

Thank you guys for the responses

vetteoz

iTrader: (13)

44lb injectors are good for 575Hp ( @80 percent duty /0.50 BFSC )
Do the calc yourself
http://www.fuelinjectorconnection.co...widercalc.html

Your combo is not going to come close to that figure
Check the Hp output of the hot 383 ( with way better Perf parts than yours ) in the link I posted above

Good , so you can get accurate A/F feedback.
Adjusting the fuel pressure alone is not going to " tune " the engine

nutzar4

Then how could I tune the engine?

vetteoz

iTrader: (13)

HSR would be better choice for 383
https://www.thirdgen.org/forums/tpi/...ow-tpi-vs.html

vetteoz

iTrader: (13)

You need tuning software , some cables, and a chip burner so you can program a chip to suit
See
https://www.thirdgen.org/forums/diy-...uide-book.html

Or you could get a custom tune from PCMforLess or similar tuner
Just send them your specs and for $210 you have a tune that will at least run
http://www.pcmforless.com/index.php?...per&Itemid=316

cuisinartvette

Ditto you need a custom tune, dont let others tell you that cranking the FP up or down will do it or the computer adjusts itself thats BS

Guessingyou have the swirl port heads which hate to say are uh....not great. Pop a valve cover off and post the PN stamped hard to say.

Some porting on the base and good runners would go a long way too.

You could get it running and do that later if you wanted but we all know what fun it is screwing with the TPI once its all togehter.


Need more info.

nutzar4

I do not care at this point of reving my car past 5k and racing it, this is a daily driver until i have the money to do all this other stuff. What i want to know is if it will run and drive fine with everything I have not if my combo will make 3million horsepower and 1 second on the quarter mile. I know it is not the right set up yet cuz it isnt done. I need to buy a bunch of other **** like porting the heads, over sized valves, hi flo manifold, 58mm throttle bodies, throttle body spacer, ect. I just want to know if my car will be able to run and drive from a-b without any problems. I apreciate everyones help on saying what i need for max hp but i know this already I just wanna know if it will run fine.

nutzar4

vetteoz tht website with the corvette chip or w.e. for 209, will that work for my TA cuz if worst comes to worst and i gotta return my chip, I can always buy that just explain to me how it works a lil more, like the part where i send them my specs and stuff.

vetteoz

iTrader: (13)

Check out the order sheet
http://www.pcmforless.com/index.php?...id=2&Itemid=43

You just put your car / engine details in and select things like what temp you want your fans to run / if you want EGR , VATS deleted , etc

vetteoz

iTrader: (13)

In a nutshell ; no without a proper tune.
Not withstanding ,
as has been mentioned cam is too big for heads / intake you are using so may be hard to get tune correct

Your missing the point.
The 44 lb injectors you have been told " need " would not be needed on a engine making way more power than what yours will ever make

Tonysz383

With your current set up you can't drive the car. You need the chip re-tune to run the 36lbs injectors. I just had my 97 Z ECU re-tune by PCMSFORLESS.COM, I sended the ECU on Monday via Priority mail and got it back on Friday. They are fast.

nutzar4

I will return the current chip and get that ones. I kinda knew i needed the custome one but i was afraid that it was gunna cost me 400+ so i thought i could get away with this one. Thats why i sounded like a d**k for earlier but now that i know its like 5 bucks more then the one i got its np and i will deff do tht. Thanks you guys for the help. also very random does anyone know what the speedometer goes up to in a gta digiatal dash?

mightymaro94

dont know for sure but being digital with 3 digits i would say 999 lol

nutzar4

I figured that but i heard somwhere that it stops at 85mph and starts flashing lmao?

jugheads88gta

Haha my 88gta dash went to 117 then my car wouldnt go faster lol twas a stock 305 tpi 170xxx miles but when I turned the car on just befor start it would read 140

VincentZ28

iTrader: (2)

His hp will be around 275whp. He needs a small cam to work with those heads with a 210 duration under .500 lift.