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I just picked up a new car, to me of course, it is a 1987 Camaro Iroc-Z.
Here is what I have been told by the previous owner;
fiberglass 6 in. cowl hood,
high rise spoiler,
'89 Camaro rims now,
'89 Corvette 350; 4-bolt main,
with Vortech heads(?),
mid-length headers,
Comp Cam camshaft (440 or 450 (?)),
re-done exhaust with flow-master muffler,
TPI style fuel injection,
BBK adjustable fuel regulator,
LT1 injectors (22lb or 24lb (?)),
700r4 automatic transmission,
BorgWarner disk rear end,
4th gen black leather seats
I have a lot of parts with this car and from my '89 Trans Am as well. I would like to know if there are any differences between TPI setups (plenums, runners, manifolds, etc.)? The two throttle bodies that I have are different, they have different numbers on the bottom of them and the throttle linkage are different, but the throttle plates have the same numbers, does that mean they are the same bore but different transmissions? How can I tell if the LT1 injectors are the 22lb or the 24lb injectors? I have brand new 22lb corvette injectors from SFI (South Bay Fuel Injectors) and the adjustable fuel pressure regulator from them as well.. Wouldn't it be better to use my parts that I know are good and new? Or would you try using the LT1 injectors and BBK adjustable fpr? I have a MAF (mass air flow meter) that I bought new for my Trans Am, but I don't know if it will read enough, the one that came with the car has 0280 213 004 & 14 094 712 on it, what is it from? How do I figure out what heads are on the engine? Also, I have a ECU or ECC that is a remanufactured one.. "Number: 7-7165, DC Code: 0710ST, Barcode: 0771650010810044 REMFG" I was wondering what it was from and what the setting/tune would be on it?
I have a video of what it sounded like before they took the intake and feul system off, but it won't let me upload it for some reason.
Thanks a lot in advance and any help and ideas would be greatly appreciated. The intake and fuel injection was taken off the car because they were going to convert to a Holley 750 double pumper carburetor with electric choke, but I didn't get any of that.. So I have to get the car put back together with the best of the parts that I have!
I'd believe NOTHING the previous owner has said. The pictures of the manifold together in the car shows a NON vortec baseplate, so those are not vortec heads. Who knows if that engine is actually a 350, let alone a "corvette" motor. They're always a corvette motor when they're being sold. Who knows what cam or heads are on it as well. Google the part numbers to figure out what's what as far as tpi parts and injectors go. Can't advise on what parts to use till YOU know what's there. There is a difference in 87-88 parts and 89 parts. Small differences but important ones. If you're using an 89 chassis/wiring then use 89 parts. LT1 injectors are 24lb, IF those are LT1 injectors.
At this point you have to know what you have before you figure out what to do.
I've heard so many claims on what size the injectors are for 92 LT1s. Whether it's 22's because they were still batch fire instead or sequential, or they're all 24's since the computer shows the injector constant close to 24#. Part numbers on them will tell you more than guessing. Google the numbers. If you have Southbay 22s, then use those with a stock chipped 350 ECM on a confirmed 350ci engine.
I can't seem to find any part numbers on the LT1 injectors that I have. I have ordered in both the 93 and the 94 LT1 injectors at work to compare them. But the pictures on the computer at work look the same, but the part numbers are different. I do have the SouthBay 22lb injectors here, I know that because I ordered them myself. They have less than 2k miles on them, maybe even less than 1k. I'll have to go out and look at the block to see if it is for sure a 350, I didn't get the vibe that she would have lied to me, but I will double check that.
I checked the block, it is a 5.7l 350 like was told. The casting number is; 14093638. I was told it was a roller 4 bolt engine, but that a flat tappet was installed.
Some 638 blocks were used in trucks with flat tappet cams factory installed. It should have all the provisions for roller that may or may not be tapped. If it is an ex-truck block would explain the "vortec" heads as some people think the earlier truck 193 "swirlie" heads were vortec heads. Might want to pop a valve cover, read the part number and see what heads ARE there.
Yeah I'm guessing that the block was a truck or van block. If you want to go roller it shouldn't be too bad to drill and tap for the provisions. Good thing you got 083 heads from an fbody, I'd rather have those over 193's.
Acc looks to be fbody unless someone sees something I don't. Been a long time since I had vbelts.
I don't really want to do any work to this engine. I just want to get it back running and get it on the road. I ran the VIN and this Iroc-Z was one that came with the 305 and auto.. So apparently somebody has swapped it to a 350. Would my '89 TPI serpentine setup bolt up the the engine?
What is the suffix code stamped on the block pad, passenger side front where the head meets the block. The upper water pump bolt screws into the pad...the 2 or 3 letter code will give you a better idea of what engine (application) you have.
Looks like the oil dip stick is on the passenger side...so it's most likely a post 1986 one piece rear main seal engine to start with.
The 89 serpentine will work..might want to use the 89 water pump just in case.
I tried to go get the code from the block pad, but I can't see or read anything on it. The oil and transmission dipsticks are both on the passenger side, like my '89 TA is.
Block could have been decked and that info went with it. I don't think it means anything as we know it's not an Fbody engine since it never had a roller cam yet it has 083 heads from an Fbody. It's clearly been changed around so where it was means little but what it IS means more. Pulling it apart and visually finding out what is there will be the only way to know for sure.
And if you just want it running the only real concerns are how healthy the engine is (compression etc) and if the camshaft is compatable with a TPI. Especially with a stock PROM.
The video I posted earlier, in post #3, is the back of this car back and the tag that was on the car when I went and picked it up.. So I am to believe that the cam is there and that it did run with the TPI. But I do know that the engine isn't from this car and everything. Is there a way to check the had gasket without putting back on the intake or taking the heads off?
While you have the intake off why not do an all cylinder compression test? When you remove the plugs, keep them in order and study the insulators. Look for oil consumption, white color from water entering the combustion chamber etc. If you can pull it off..a leak down test would be the best route.
Once you are confident the engine is solid put it back together, check fuel pressure etc and run it.
A "flag" that stands out is the fact that they already had the TPI intake off and were going to install a "carburetor/intake" setup. Sounds like they had a TPI problem, didn't know how to troubleshoot the problem and were just taking the easy route...putting on a carb and HEI distributor.
Get the engine back together and make sure the TPI is assembled with proper parts like ecm, prom etc. Looking at the engine..I suspect the 22lb injectors would be just fine.
While you have the intake off why not do an all cylinder compression test? When you remove the plugs, keep them in order and study the insulators. Look for oil consumption, white color from water entering the combustion chamber etc. If you can pull it off..a leak down test would be the best route.
So do a compression test as it sits? Can I do a leak down test without the intake and coolant system being hooked up?
Originally Posted by R3500
A "flag" that stands out is the fact that they already had the TPI intake off and were going to install a "carburetor/intake" setup. Sounds like they had a TPI problem, didn't know how to troubleshoot the problem and were just taking the easy route...putting on a carb and HEI distributor.
What I was told, I know that I shouldn't rely on what I was told, was that the TPI system was restrictive and killing the top end of the car; that's why they were going to the carb setup.
So do a compression test as it sits? Can I do a leak down test without the intake and coolant system being hooked up?
What I was told, I know that I shouldn't rely on what I was told, was that the TPI system was restrictive and killing the top end of the car; that's why they were going to the carb setup.
Yes to the first one
I really suspect that they were just over their heads diagnosing the the TPI, installing a carb is only going backwards with technology.
Ohm the injectors while out and why not clean them...there are plenty of U-tube videos on how to clean injectors. You will be able to see how they are spraying during cleaning also.
Comparing all 8 spark plug insulators (keep them in order) could be very helpful.
Ohm the injectors while out and why not clean them...there are plenty of U-tube videos on how to clean injectors. You will be able to see how they are spraying during cleaning also.
The injectors are mine, new. They have been cleaned since I removed them from the Trans Am and then new o-rings were put on and they were reinstalled in the rail/intake manifold and have sat there. I'm 99% sure they are in working order. Assuming that they don't go bad just sitting around?
The injectors are mine, new. They have been cleaned since I removed them from the Trans Am and then new o-rings were put on and they were reinstalled in the rail/intake manifold and have sat there. I'm 99% sure they are in working order. Assuming that they don't go bad just sitting around?
At least ohm them before putting the EFI back together...it's a pain changing them later.
Check the injectors that were in the car if you have them...
How do I ohm them? What numbers am I looking for? I do have the ones that came with the car, LT1 injectors from the '92 LT1.. 22lbs as well?
Just put an ohm meter across the two terminals on the injectors...they should be 12 ohm. The thing to look for is that they are all the same..if you get 7 at 12 ohm and one at 10 ohm it's needs to be replaced.
The numbers are really small on the injectors and on the plastic area (part A)
Just put an ohm meter across the two terminals on the injectors...they should be 12 ohm. The thing to look for is that they are all the same..if you get 7 at 12 ohm and one at 10 ohm it's needs to be replaced.
The numbers are really small on the injectors and on the plastic area.
Thanks, I will try to find the ohm meter and check them. What numbers are you referring to on the injectors? If you mean the part numbers, there are none that I can find. I ordered in both the '93 and '94 injectors, they are almost the same, but compared them to the ones that came with the car and it matched up to the '93.
Last edited by BadRiggins; Jan 1, 2016 at 08:47 PM.
Thanks, I will try to find the ohm meter and check them. What numbers are you referring to on the injectors? If you mean the part numbers, there are none that I can find. I ordered in both the '93 and '94 injectors, they are almost the same, but compared them to the ones that came with the car and it matched up to the '93.
Look at the previous post..Part A in the picture...should be something like: 17086543, 17112094 etc
Look at the previous post..Part A in the picture...should be something like: 17086543, 17112094 etc
A 3294
17095004
So I guess my comparing was wrong? I spent a good bit of time trying to find out how to tell them apart.. The new ones had like painted/printed on numbers, so I just figured these were rubbed off by now. They were just dirty and I couldn't find the numbers.
The 89 serpentine will work..might want to use the 89 water pump just in case.
I just looked and I don't think that I am going to swap the serpentine set up from the '89 TA to the '87 Camaro because then I would have to run the wiring and hoses differently.. The AC and alternator are on different sides, I don't know about the rest yet.
Yeah, so she had it running on 24lb LT1 injectors, but a stock '87 350 auto computer..?
It'll run that way but not at any sort of peak. My speed density car ran fairly well even with larger injectors with the factory PROM while I drove it to the dyno tune.
It'll run that way but not at any sort of peak. My speed density car ran fairly well even with larger injectors with the factory PROM while I drove it to the dyno tune.
So with the prom that I have, I should go with the 22lb injectors that I have, correct?
So with the prom that I have, I should go with the 22lb injectors that I have, correct?
I would...
BTW: It's hard to tell but it looks like a couple of push rods might have been flipped indicating that the rockers arms may have been adjusted at some point.
Might want to consider adjusting the valves in case they are too tight? Not really hard to do.
Just put an ohm meter across the two terminals on the injectors...they should be 12 ohm. The thing to look for is that they are all the same..if you get 7 at 12 ohm and one at 10 ohm it's needs to be replaced.
Our meter got fried, so this has to wait..
Originally Posted by R3500
BTW: It's hard to tell but it looks like a couple of push rods might have been flipped indicating that the rockers arms may have been adjusted at some point.
Might want to consider adjusting the valves in case they are too tight? Not really hard to do.
Bad Riggins
Yes, 1987 was a transition year for belts. I think 88 was first year of serpentine. The compressor was moved to passenger side that year. My 87 is like your picture I referred to earlier. Can someone verify the change?
Just put an ohm meter across the two terminals on the injectors...they should be 12 ohm. The thing to look for is that they are all the same..if you get 7 at 12 ohm and one at 10 ohm it's needs to be replaced.
What is this for? I don't recall having one on my Trans Am.
I have this on the Camaro already, and I have an extra one of it as well. I was thinking it was a "sandwich plate" to allowed you to run a oil cooler or something of that sort, but it seems like the lines run to coolant?!
The oil pressure switch that closes is to provide power to the fuel pump. Obviously, when the engine is not running, there is no oil pressure, so the FP relay allows the ECM to prime the fuel pump just so the engine will start initially.
They work together. (Fuel Pump/Relay and Oil Pressure Switch
I need some help figuring out some of the wires and connectors in the engine bay.. Can anybody post good pictures of factory wiring and engine setups? There is no 9th injector, egr, or smog in the car.. From what I understand, in '87 the Camaro had all of that? What do the connectors look like that plug into those things? I just read about how you can use a '89 prom in the '87 car/computer to delete the 9th injector?
Also, would like to know how to determine which injector plug goes to which injector?
Last edited by BadRiggins; Jan 13, 2016 at 08:56 AM.
I just read about how you can use a '89 prom in the '87 car/computer to delete the 9th injector?
The previous owner may have already done that?...what is the bin code on the MEMCAL and service number on the ecm. Some guys have modified TBI ecm's to work with TPI.
The previous owner may have already done that?...what is the bin code on the MEMCAL and service number on the ecm. Some guys have modified TBI ecm's to work with TPI.
Originally Posted by BadRiggins
Also, I have a ECU or ECC that is a remanufactured one.. "Number: 7-7165, DC Code: 0710ST, Barcode: 0771650010810044 REMFG" I was wondering what it was from and what the setting/tune would be on it?
Also, the red arrow is pointing to the Cold Start Injector Switch on the front of the Intake. If the 9th Injector Delete was programmed out, this will not be needed. The blue arrow is pointing to the Coolant Temp switch, which IS needed. FYI
Also, the red arrow is pointing to the Cold Start Injector Switch on the front of the Intake. If the 9th Injector Delete was programmed out, this will not be needed. The blue arrow is pointing to the Coolant Temp switch, which IS needed. FYI
The runners and intake manifold, neither have any of the 9th injector stuff on it at all. I just have the wires still in the car.
