Anything and everything from my firebird 3.4 (Page 1/1) Raohstedd87 OCT 13, 03:35 PM Hey everyone I finally registered a account now that Ive began the 3.4 camero/firebird engine swap for my 87 gt. I was able to aquire a 1995 base firebird. It's pretty beat up, was apparently hit while parked on the street in the driver side rear fender, so cosmetically is pretty rough, but mechanically the engine looks like it was very well maintained and runs strong which is all I really needed. Anyway aside from the engine what else should I pull off of it that could work with the fiero? I know some take the seats from it and also the headlight motors, is their anything else I should grab before I take it to the junkyard? Thanks! 82-T/A [At Work] OCT 13, 06:30 PM quote Originally posted by Raohstedd87: Hey everyone I finally registered a account now that Ive began the 3.4 camero/firebird engine swap for my 87 gt. I was able to aquire a 1995 base firebird. It's pretty beat up, was apparently hit while parked on the street in the driver side rear fender, so cosmetically is pretty rough, but mechanically the engine looks like it was very well maintained and runs strong which is all I really needed. Anyway aside from the engine what else should I pull off of it that could work with the fiero? I know some take the seats from it and also the headlight motors, is their anything else I should grab before I take it to the junkyard? Thanks! Ok, my personal opinion... if you're looking to do a 3.4 swap... you may want to seriously consider swapping over the ECM as well. It adds some more complexity to it, but the 3.4 is a Sequential Port Fuel Injected engine... that means that it only fires the injector it needs to for the piston that's firing (or just before it). The Multi-Port Fuel Injection system that our Fieros has, uses a batch system... which means it fires all three injectors on one side, and then switches. Above 3,500 rpms (?) it makes no difference, but in the lower RPMs, you get better throttle response, more horsepower, improved fuel economy, and better drivability. It's also still OBD2, so you can more or less still make use of everything that's already on there. Even if you decide not to use it... I'll buy it off you if you don't want it (engine harness, ECM, and cabin wiring harness). I wouldn't take the seats, they aren't better than the Fiero seats. I personally wouldn't take anything else from it either. richard in nc OCT 13, 07:49 PM if its a five speed put it on marketplace. Additivewalnut OCT 14, 08:21 AM quote Originally posted by 82-T/A [At Work]: OThe Multi-Port Fuel Injection system that our Fieros has, uses a batch system... which means it fires all three injectors on one side, and then switches. Above 3,500 rpms (?) it makes no difference, but in the lower RPMs, you get better throttle response, more horsepower, improved fuel economy, and better drivability. I didn't know the 2.8 EFI was like that.... I don't want to take this thread off topic but does the 2.8 have a problem with gas getting in the oil with all the raw fuel that's shot in the cylinders? That feels like an incredibly dumb design. Raohstedd87 OCT 14, 08:48 AM quote Originally posted by 82-T/A [At Work]: Ok, my personal opinion... if you're looking to do a 3.4 swap... you may want to seriously consider swapping over the ECM as well. It adds some more complexity to it, but the 3.4 is a Sequential Port Fuel Injected engine... that means that it only fires the injector it needs to for the piston that's firing (or just before it). The Multi-Port Fuel Injection system that our Fieros has, uses a batch system... which means it fires all three injectors on one side, and then switches. Above 3,500 rpms (?) it makes no difference, but in the lower RPMs, you get better throttle response, more horsepower, improved fuel economy, and better drivability. It's also still OBD2, so you can more or less still make use of everything that's already on there. Even if you decide not to use it... I'll buy it off you if you don't want it (engine harness, ECM, and cabin wiring harness). I wouldn't take the seats, they aren't better than the Fiero seats. I personally wouldn't take anything else from it either. Hey thank you for your reply! I haven't completely made up my mind if I'm going to do the 2.8 top end yet. It's definitely the easiest way and will ensure the fastest track to getting driving down the road. But I would really like to get away from the distributor setup, and the small throttle body and plenum. I've tried researching about switching over the entire 3.4 but was unable to find much info about it. Is the only issue with doing that swap just flipping the intake plenum around the other direction ? I'll definitely get a hold of you tho if I don't end up using any of it. Raohstedd87 OCT 14, 08:53 AM quote Originally posted by richard in nc: if its a five speed put it on marketplace. Yes it is a 5 speed, I wish I could use it for the fiero! 82-T/A [At Work] OCT 14, 10:45 AM quote Originally posted by Additivewalnut: I didn't know the 2.8 EFI was like that.... I don't want to take this thread off topic but does the 2.8 have a problem with gas getting in the oil with all the raw fuel that's shot in the cylinders? That feels like an incredibly dumb design. Well, in truth, it's no different really than what a carburetor does. A carburetor continuously dumps fuel into all of the intake ports, where the fuel sits on top of the valves until the valve opens. So, it's really a better design than it may seem. But you have to remember, this was 1985 when the MPFI debuted in GM vehicles. In 1985, we had basically all the same technology we have today (touch screens, cell phones, etc.), but everything was enormous. And most people, if they even had computers at home, had 8088 PCs (black and green or amber), or a Commodore 64, etc. The NES was BRAND NEW, and most people had the Atari 2600. So, to have computer control at that level in a car was still something pretty amazing. It does literally nothing in terms of performance above mid 3,000 rpms (or sometimes lower). But in the lower RPM range, it improves drivability a little and improves fuel economy. That's because of a better distribution of fuel into the injector, and the fact that it's still spraying as the valve is opening so you're getting better atomization. quote Originally posted by Raohstedd87: Hey thank you for your reply! I haven't completely made up my mind if I'm going to do the 2.8 top end yet. It's definitely the easiest way and will ensure the fastest track to getting driving down the road. But I would really like to get away from the distributor setup, and the small throttle body and plenum. I've tried researching about switching over the entire 3.4 but was unable to find much info about it. Is the only issue with doing that swap just flipping the intake plenum around the other direction ? I'll definitely get a hold of you tho if I don't end up using any of it. Thanks. I hope you decide not to use any of it, and I get to keep all of it, haha... But it would be unfair of me not to at least mention that your assessment is correct. you basically just flip the intake around, and there you go. For what it's worth, the 3.4 intake isn't so great either. It's not any better than the Fiero's intake really... but it's better matched to the 3.4 at least.