i.ve got a 385 tpi 24# injectors a cam with 212 intake duration and 447 lift and 218 exhaust with 447 lift. ported intake and is a flat top motor. i.ve got some crappy 882 heads with gasket matching and bowl blending. some headman shorty headers with flow master exhaust 700r4 with 3.23 gears.and as for my ecm chip it is for a corvett because i read some where that the camaro and vett used the same ecm in 85 and yes it did work i only did that because i dont have the money or the know how to burm a chip. and i put it in for the 22# injector set up to use on my 24.s and yes there was a diffrence for the better. now for the question at hand. with the current set up i have does any one have any idea what horsepower tq or maybe any 1/4 mile times. its been to cold here and the desk top sim i have ran at its best has been about 283 hp at about 3500.rpm and 385 tq at about 4500rpm.
just wanted to see if anyone has see any thing about my setup on the street or at the track. thanks for any help

 

interesting setup. big inches with a restrictive intake with a poor set of heads and stock like cam.

i've seen 383's with stock L98 heads/cam/TPI before, but dont recall any of their numbers. But i think the most hp you'll get out of some setup like that, and once tuned properly which you will need to do, will be on the lines of 240whp-250whp or so, somewhere around 4000rpms. No higher than 4200 i'm sure. Stock L98's seem to peak around 4200, making 210-220whp in good condition. bolt on L98's with stock TPI get to around 230-240 or so. 385 cubes i would think would make more hp than the 350, just at a lower rpm since the heads/cam/intake choke the motor off.

what will be impressive is the torque output. stocker L98's seem to be up near 330-350wtq, around 3000 rpms or so. that motor you have their will make closer to 400wtq i'm guessing at around 2500-2800rpms, and keep it high from off idle to around 3500 where it will start dropping off like a rock due to poor heads/cam/TPI

all and all, it should launch hard as hell in the right setup. a good 2800 stall and slicks will get you low 1.7 60 foots, maybe more depending on the cars suspension and track conditions. should be good for mid 13's

those are my guesses

 

thanks for the info . if i am at a intersection i can floor it and it will spin the tires and get a little sideways all the way through and about 5 foot on the outher side then it will straghten up and pull to about 5200.rpm then thats there the power gets shut off like a light switch. then it will shift and when it shifts itno 2nd its like i hit a 100 shot of nos.and all is done with a set of 3.23 gears. new heads and a cam are in the works.its a little hard to do when your wife is in school and i have 3 young daughers any more ideas will be helpful

 

yea throw on a set of better heads. your tq is gona be high but bc its a 385 the extra cubes are lowering your peak HP even more due to the increased air through stock TPI. upgrading the stock TPI will help increase powerband alil more and had a good bit more HP but heads will really make that shine.
i'd say if u decide to keep the TPI and just upgrade it to stay in the 170-180cc range wit the heads. vortecs would be nice and a vortec base would give u prob 60-70hp and prob 50-60ftlbs of tq. i think that would be a nice upgrade, ur cam is a good bit mild but its perfect for the range of the stock vortecs lift range which is max .470. i would get a set for 500$ and get a used vortec TPI base for say 200 or spend 400$ at scoggin and BAM! 60hp and tq. that will really wake up ur motor and your powerband will improve as well as drop maybe .5sec in track times. look for low 13s in the 1/4
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im building a 383 setup as well but im goin HSR, and patriot 195cc heads, and a comp cams XFI280, 230/236 .567/.571 lift and i should be gettin around 500hp at the crank. im looking for very low 12's/high 11's.

if u go the vortec upgrade u should be making 350-370 at the crank andif u do the runners and plenum u could push 390-400hp. i might be alil high wit my guesses but a stock 350tpi with vortec heads. HOt cam. scoggin vortec base, and edlebrock runners made 355hp and 423 tq with a stock chip. and TB.

 

also can i use a tq conveter from a s-10 for a better stall speed was just wondering because i have a couple laying around.. also whats the web sit for the vortec base.

 

s10 converter will give you abit more stall speed, but its still kinda not optimal

 

the s10 is not enough stall to actually help u. u need more like a 2400 holeshot B&M.

SPDC2000.com is the site for the vortec base and vortec heads. he modifies the heads for larger lift cams and screw in studs as well. but with ur cam u dont need the upgrade as long as u stay under .470 lift. if u think ur ever gona go over that then just get the upgraded vortec heads now from him so u'll be safe in the long run and save $$.

 

VORTEC TECH HEADS AND BASE OR A LITTLE OUT OF MY REACH RIGHT NOW. BUT FOR THE SHORT TERM WOULD I OR COULD I GET ANY KINDA HELP AIR FLOW WISE BY HONING MY BASE. AND ALSO DOES MY MOTOR SOUND ABOUT HOW IT SHOULD RUN FOR MY SETUP I HAVE. I WOULD HATE TO HAVE SPENT ALL THIS MONEY ON WHAT I HAVE GOT IN IT TO HAVE A 4.6 STANG GIVE ME A RUN FOR MY MONEY. IF IAM AT HIGH WAY SPEED ABOUT 55 MPH AND GIVE IT GAS IT PULLS LIKE A MOTHER F#@KER
AND I KNOW THAT HAS TO DO WITH MY 3.23 GEAR. I HAVE A BUDDY WIH A 85 GRAN NATIONAL (YES HE IS VERY PROUD OF IT) HE SAID IT WOULD BEAT HIS CAR BUT NOT A MODED ONE AND I DO TRUST HIS JUDGEMENT BUT YOU CANT DRAG RACE IN THE SNOW. WELL NOT VERY WELL DOES ANY IF THIS SOUND ABOUT RIGHT.

 

um u should be able to take a 4.6 stang off the line,e he might catch u in the long run, there makin the same hp prob but hell pull to 5500 so his top end will give him that advantage. but there is no way your car is pullin to 5200. the stock tpi dies at 4200 with a 350 so ur 383 should be killin it at about 3700-3800. the reason ur pullin from 55 or off the line etc is that u have over 400ftlbs of torque. thats gona make that thing pull but its top end is gona be horrible. im not sure about the grand national... if its a t-type then hes got u prob but it would be close. if u can get it to hook wit all that torque ur gona get outa the hole quick and thats your advantage but give em time and they will get u.

i was thinking of extrude honing my base and SLP runners to get the most outa them but when i asked for a quote they gave me a number i didnt expect! I WAS LIKE WTF!!!! seriously it would be cheaper to just get an aftermarket base and runners. extrude honing will help with flow but still not give u what u need for your setup. u can pick up used bases im sure from ppl on this site or others etc. an extrude honed stock base wont flow as much as a aftermarket non touched. now if u get a aftermarket and port it and then get it extrude honed u got a good flowing base.

 

i agree, try shifting at 4500 or so. you'll run faster times that way.

I wouldnt extrude hone the stock stuff since the cost is as much as aftermarket stuff, and the flow will be about the same from what i seen.

from what you have so far i can tell you a stang will be a close race right now. the new stangs probly will get you. most GT's from 99-04 with exhaust bolt ons will go mid 13's on street tires, low 13's on radials. thats where your car will be

I'd seriously look into atleast siameseing the stock intake base just like the tech articles here. even with stock runners, siamesing the base will help peak power alot. it will shift the power band up a few hundred rpms which is needed for a 385.

Then look for matching SLP runners and you will have a decent setup. check ebay and classifieds for good deals!

 

i have already siamesed the base and the upper plumin. i,am pretty sure thats why i can go to 5200 R.P.M and that is it!!! i am startin to debate about keeping it t.p.i or just going with a carb. i mean hell intake runners and base what at lease 400$ then i have all ready brought 24lb injectors. i will need a new chip i.ve got a vett chip but i know it wont work so there is a custom tune about what 200 to 400$ now a adjustable fuel pressure regulator 80$ new throttle body 300$ or i can buy my own software and burn my own chip but no now i have to buy a bunch of extra chips more money. i need new heads any way i do all that and still may not hit 400 hp!!! aghhh
i could buy a good intake carb and diffrent cam and a (distrutor)--yes i know i cant spell and have less money involved. should not be a problem hiting 400hp now..

 

yeah you dont need a adjustable pressure regulator if you tune the chip for the fuel. more pressure is nice tho for better atomization

if you siamesed it and such, it should pull alittle higher than stock TPI. 4800-5000 is probly where peak power is. I'd actually say maybe more like 4500 and a 5000 rpm shift point may work ok for that motor.

i think you can get near 300whp which is closer to 375 crank hp or so with just a bigger cam and tuning and maybe some more port work to the heads

 

u can get really good deals on stuff if u take the time to search... say like the base... u can get used for alot less, i got a pair or SLP runners for 150$, i got a brand new 58mm TB for 210$, brand new ford SVO 30lb injectors for 200$, brand new patriot 195cc assembled aluminum heads shipped to my door for 890$. custom chips can get burnt for 100-150$ from PCMforless.com i believe etc. so its not that crazy $$ as one would think. just gotta look. i got all the parts but the runners new from online stores. ive siamesed my plenum and port matched them to my SLP's and ported my SLP's slightly but i dont think my peak power is at 5200 even on the stock 350 TPI. if u port everything and get a set of SLP runners and port them alil etc u could get 5000 outa that, your heads will be 170-180 cc something like brodix 180, or trickflow etc would be a good match.
u could get 400hp with just runners and a head upgrade. or close to it with runners and alot of porting, TPI isnt known for HP but for Tq, in order to make HP with TPI u have to increase RPM, and i would say to make 400hp it would have to spin to at least 5000.
i agree that ur peak power is around 4500-4700 bc of the porting but ur runners are holding u back, also the low lift on the cam is killing flow #'s. throw on some 1.6rr to increase the lift to get some more air into the heads, the increased ratio will also make that cam act alil more radical.

 

i get a little worked up some time about what i want i know a set of good heads will make a world of diffrence. and that will be the next thing i will get. i just have to keep in mind that this car is just a street cruiser i would like to have some extra kick. so would i bee better off sending my chip to pcm for less insted for useing that jet chip i have? because i dont have the $$$ for a dyno tune.also i read about my 882 head that the intake port runner size ws 1.50.cc i didnt relize that they were that small. i can see now where a 180 or 195 would really wake it up.

 

I believe him that it pulls all the way to 5500. My 86 TPI 305 runs out of breath at 4500RPM.

My 87 ??? TPI pulls to 5500 and then it shifts. I am not sure what the previous owner did but it runs really well.

I think it has a cam change since there isn't as much torque as there is supposed to be down low.

Could you guys separate your thoughts with paragraph breaks? it would be easier to read. You all have a lot of good information, just hard to sort through it when its in one paragraph.

 

i.am not sure where peek power is i,am also sure its not at or above 5200.rpm on my car. thats just where my car runs out of breath. i ported the bottom base of my runners witch i.am sure thats why mine does what it does. i just know if i bing it up on stall speed let off the gas it will take off ammm pretty good but if i give it any gas at all once i get moveing it will spin the tires. on a side note i.ve got a 4 bolt main short block core and a good 350 crank to trade for a good set of 202 heads. thats all i really want for christmas

 

You might want to consider beefing up the rear suspension, if you havent already done so. This will ensure better, more controlled and predictable launches.

If you look at customblackbirds signature, he has quite a few suspension upgrades.

I think the most affordable would be either lower control arms and/or the panhard rod. LCA's control the launch by keeping the rear wheels planted and the panhard rod keeps the rear axle from rotating around the axis.

If you want to get a launch on those mustangs, that might be the way to go. The stock mustang rear suspension does not have a panhard rod, they have a rear sway bar (at least from the suspensions i have seen, the brand new one maybe different).

 

i was surprised to see how much of a diff suspension upgrades really improved the car. u really need a good performnace platform before u can start throwing power at it. the LCA's/panhard rod really tightented up the rear end. but the addition of poly everywhere makes a bigg diff as well. i would build up ur suspension platform first. u will get more performance outa ur motor

the old mustangs up until the new body 05 stang are all non panhard rod. they have upper and lower control arms like in the monte carlo SS's. the newer style 05 STANG has a solid rear axel and a panhard rod!!!! yes u heard right, those fords are taking design tips from 3rd gens love it

 

this is the first strong motor that i have had a chance to build does my setup i have sound about right about the type of performance and the way it runs with my 3.23 gears i just dont know what sounds about right. o i have heard storys about guys in the 87 irocs being able to burn the tires off in all four gears with a stock motor is any of this correct. theres just not that many people around here with muscle cars mostly rice burners.if those storys are true then i am barking up the wroung tree with this tpi 385 setup

 

my 350tpi is almost stock... well the long block is, only upgrades to the motor are SLP runners and ported plenum, air foil, exhaust, ram air, underdrive pullies and motorvation chip. i cant get traction in the rain at all lol my 2-3 shifts in the rain leaves me sideways spining, and my down shifts from 4-3 are the same at 70+mph... that'll pucker ur butthole real fast

my 1-2 i can burn tires all day, and at full throttle i can get a chirp in the 2-3 at a straight run but if i just gas it full throttle off the line i can burn 1-2-3 shift no prob. i dont car who tells u that they can burn all 4 gears bc the 700r4 overdrive shift is way too soft and not quick enough to burn the tires not to mention the .70 overdrive gear ratio just wont allow it. its a cruzing gear, i have a 50% larger billet overdrive servo and boost valves and shift kit all the goodies and i have the fastest overdrive shift available and still its not as quick as the others. but a stock 350tpi can burn the 1-2-3 shift cuz i can. the 3.23 gears are fine for the street and i wouldnt go above 3.42 with a highflow TPI setup bc it just takes u outa ur powerrange way to fast not to mention multiplies the torque to the point where u cant get any traction in the lower shifts.

as stated u have 13s with about 250-270hp but thats because of your heads and intake. u can reach 12s with better heads and upgraded TPI easily. leave your gears they are fine. and your 385 should be able to smoke the tires a good bit more than the stock 350TPI can. u should be able to burn it in all 3 gears if u kno how to shift it. your making alot of torque at low RPMs.

i love just smoking the tires infront of a *****... they dont kno wat to do.

 

i am willing to bet your heads on your 350 tpi are a better flowing head than my 882.s are

 

hummm well check this out. i went take off my intake today and 3 bolts were semi tight and the rest were finger tight. hummm i wonder if thats why i felt like it lost a little pep in its step!!!

 

eh, idk bout the heads. idk anything bout the 882s. but the stock TPI's have a power peak of about 300 maybe lol. they were better than most at there time but now they are CR@P. if u wanna test that out... i'll be gettin rid of mine in the spring for my patiot 195cc babies...so i'll give em to ya cheap if u wanna test that theory.

haha27 yea u where prob sucking in air and loosing vacume lol

 

naa i am going to try to save up for some rhs 180.cc heads i found a web site that posted a lotttt!!!!! of cylinder head flow numbers.i also read in car craft where thet tested a set of vortec heads to a set of patiot heads. the vortec out flowed them by a bit better till about 500. to 600. lift thats where the patiots flowed well. the vortec had better tq but the patiots had better hp but what street cam do you know that will have 600. lift. i am lookin more at mid lift flow and velolicty at 300. 400. lift for the street.

 

yea i was dissapointed by that article.... i dont believe everything that CHP tells u. they do things to cars that dont make sense and they spend alot of money on products that dont give the best numbers or when there are cheaper alternatives they always get the most expensive. alot of 3rd gen buildups left me smackin my head like... u just wasted alot of money!

your right about the cam tho. i would have liked to see them run a better cam say in the .525 range with both heads and see who produced better numbers. im not sure of the cam they used tho.

my daily driver cams gona be a .567/.571 lifter