88tpi350

iTrader: (5)

has anyone local (md area) stmarys county to be exact, done tpi to carb swap... if so id love to pick you brain

91greenbird

iTrader: (4)

yup im in waldorf

ZZ4 86 Z28

iTrader: (1)

yea but im kinda far (rockville)

88tpi350

iTrader: (5)

i was wondering if i can gut my entire cpu and harness, im swapping to mechanical fuel pump. and putting a manual lockupl for the tq converter, but will my guages still work? also what intke are you guys running? im thinking of going with the summitt version of wiands intake for 87up (budget racing)

ZZ4 86 Z28

iTrader: (1)

the only things i had to do to gut my ecu were, i switched to a 4 prong instead of a 5 prong relay for the fuel pump, i got hydraulic lockup in my trans, and i had to rewire the fans with a direct adjustable switch (theyre like 10 bucks) cause the ecu told the fans to turn on prior to that. or you could just hook up a toggle switch inside, but that looks bad and you can leave it off by accident. i think thats about it. i have a polished performer rpm with a holley 700 double pumper over top it along with the k&n xstream 14x3 element and lid. clears the stock hood fine. let me know if you have any more questions and ill try to remember the answers.

88tpi350

iTrader: (5)

well, while i was building the car somehow the key switch stoped working, car is controlled with a pushbutton, so im full of switches(on a neat pannel) what fan controller do you have? i cant find any to turn fans on below 200* im ditching the fuel pump and putting in a dial for the converter so thats taken care of. hmm. i guees my only other concern is distibutor. can a standard hei in cap work, or do i need to get an ignition box?

91greenbird

iTrader: (4)

i got a summit fan wiring relay kit with thermal switch, and ofr the distrubuter just use a large cap hei w/ vacuum advance no ignition box is required just wire 12 volts to the hot side and the tach to the other.

ZZ4 86 Z28

iTrader: (1)

what he said for the dist and the fan switch. its got a wire that comes out that you put in the upper rad hose. when it gets a certain temp (whatever you set the **** at) it closes the circuit, therefore turning on the fans.

88tpi350

iTrader: (5)

ok cool, ill look that up tonight. I didnt think i needed a box. but had to makesure. do you know which wire going to the stock dist. is for the tac of hand?

ZZ4 86 Z28

iTrader: (1)

ill let him answer that one, i couldnt tell you off the top of my head, and my car is at my house right now (im away at school).

88tpi350

iTrader: (5)

i was looking at summitt, for adjustabel fan switches, i can find any summit brand ones, but dont they all work about the same? i was thinking about just getting a jet switch that goes in the block. and a hard switch for the other fan, what do you think about that?>

ZZ4 86 Z28

iTrader: (1)

i dunno, its up to you. i only have a single fan setup, so i didnt need to worry about all that.

91greenbird

iTrader: (4)

mine was a green wire for the tach and pink for the hot wire. I just got a thermal switch for the fan that the ecm controls and wired it up comes on at like 195 off at like 185 and the other fan comes on at 185 and off at 175 (used the sensor in the block still works without ecm)

coredevice

what about the speedo and rpm gauge. The guy that ripped my electronics out told me there was no way to get it to work without the ecm. I like the idea of having a custom dash but......It would of been nice in the mean time to have those 2. here is a pic of the motor


https://www.thirdgen.org/forums/engi...-car-what.html

88tpi350

iTrader: (5)

if he ripped out all the wires, yeah there is no way youl have them, but if you just take the harness for the tpi out, apperently you will keep your guages.

Toxinz

If its a electric speedo you can run a speed buffer box. They were in some thirdgens.
Link:
http://www.hioutput.com/tech/speedo.html

coredevice

I ripped out all my electronics...ecm etc............I dont think the application woulda worked for me. What benefit would I have to keep the ecm, oly to control gauges?

ZZ4 86 Z28

iTrader: (1)

i took out the entire computer and i still have tach, speedo, etc. theres still some wires under the hood obviously, for electronics, but gauges were not reliant on the ecm. although, im not sure about 91-92 cause i think they had electric speedos.

88tpi350

iTrader: (5)

got looking around, forn a variable switch for fans, and im going to hard wire one. I found a "bow tie" high rise intake in my shop that i will use, 670 holley carb. im thinking im going to do the swap leaving the harness intact, then after it fires up start deleting wires out. in my 88 i have a elc. speed cable, ill let you know if gutting ecm kills it or not.

ZZ4 86 Z28

iTrader: (1)

cool, good luck man. i might swith to a vac secondaries carb, but i feel like if im going carb, why bother losing the throttle response and power for mileage? is there really a big diff, ive been building my car with my older friend whos all old school, so we ripped the fuel injection out the first time i had a problem with it.

88tpi350

iTrader: (5)

LMAO same thing here, i got 3 injectors bad, and i hate tuning, so off with tpi. ima start tearing it down sat, so if anyon needs tpi parts let me know

ZZ4 86 Z28

iTrader: (1)

ive been trying to get rid of mine forever, nobody wants it. it sucks.

88tpi350

iTrader: (5)

did you try ebay? there are a few on there ranging from 200-500$$

ZZ4 86 Z28

iTrader: (1)

i sold the runner and the plenum and the tb. i think i still have all the other "junk" though.

88tpi350

iTrader: (5)

yeah, there will be no harness with mine as i plan to chop the hell out of it, you know get car running.. start cutting wires

ZZ4 86 Z28

iTrader: (1)

cool good luck. dont cut the a/c wires, theyre everywhere! unless you dont have/use ac. im gonna gut mine sometime, i never use it anyways.

91greenbird

iTrader: (4)

dont put a 670 on it i made that mistake vs sucks the only way i got mine running right was with qft adjustable secondary housing without it that car sucked after alot of tuning by me and so other racers i work with

88tpi350

iTrader: (5)

yeah, no a/c for me. fist thing to go. no 670 huh? what are you running? is it a cfm issue of vaccume secondary issue. also is your motor stock built? ive got a big cam, heads, and all the bells and whistles i could think of while building.

91greenbird

iTrader: (4)

i have a 670 and it sucked without alot of tuning parts and **** added on to it my motor has stock internals and heads best of 13.8 if your car has a big cam it will never run good with a vs carb get a double pumper and if you have decent heads and cam definetley 750cfm

88tpi350

iTrader: (5)

yeah, new to carb selection thing. vaccume just hit me for some reason. big cam= no vaccume. ill look intto the pumper.

primerk5

I'm going carb to TPI, Just thought Id try this. I haven't looked my lines over yet but I need the High presure lines that your car has. I'll trade you if your willing. I don't think you have to change yours out though, for what your doing. I just thought I'd ask.

Thanks

88tpi350

iTrader: (5)

are you talking about the fuel lines? the only ones im not going to use are the ones that connect the tank lines to the fuel rail,. the small section about 3foot long

primerk5

Don't worry about it. The ones I am talking about run from the tank to the lines that your talking about. (Chassis lines) See I need the presurized lines that run the length of the car Since my car is a carb'd car I need the other lines. I just thought I'd try.

88tpi350

iTrader: (5)

FIGURED ID POST UPDATE.. up and running i love having a carb. ran it at track. dissapointing 14.5 with a 4 sec 60' time for suspension and a rear.

Stevo

iTrader: (45)

I can understand a 2.5-2.7 60' but DAMN a 4 second 60' time?

What was the speed through the traps? Sounds like you got some power in there if you could cut a decent 60'.

88tpi350

iTrader: (5)

lol yeah 98mph, i was blowing the tires out in second and third, to much motor not enough suspension/grip had to keep letting out of gas . if i featherd the gas i could maybe get a 2.5 60' but the stall woulnt let me....but thats changing soon.

91greenbird

iTrader: (4)

whats the specs on your motor and drivetrain im guessing u ran at mir last time i ran at mir i traped at 98mph with a 1.9 60 foot and ran a 13.86

88tpi350

iTrader: (5)

lol as of right now i have no clue of hp/tq but is a standard bore 350 stock rear and built too much 700r4 heads with bigger valves and portjob, wrong cam shitty intake and a nice carb lol. but all that is changing, cam was for tpi set up intake is a pos summitt intake yeah i ran a few 12.50 cars from a light on the street and kept door to door the track hates me