3.4 V6 From 94 Pontiac Firebird

[casey88]

hey yall i just got a 1970 opel gt i want to put a 3.4 v6 out of a 94 pontiac firebird in i need to know how my work is involved and were can i find parts ......what am i going to have to cut out to get it fit



thanks casey

[jeff denton]

You're there, Casey. Welcome to the club. Use the search engine, study this "engine swap forum", you will see all the information in such detail that it will take you longer to read it than to actually do the swap.

[kwilford]

Moderator Note: Thread split off, duplicate thread killed (no duplicates please)

[namba209]

Casey, I already sent you a PM in response to the one you sent me, but I'll add this, look on the left side of the main page for the Articles and Projects, that will take you to the 7 Phases of my swap. Also in the Engine swap forum, look for my Willit? Update thread. Now let me add also, if you don't have deep pockets, a lot of time, skills in sheetmetal, welding, mechanical, and electrics, this is not the way to go. Personal opinion, get your GT running with what it has first and enjoy it. It will take a fair amount of time to do the swap and you'll be without your GT. It's your first one, drive it and find out why we like them so much.

[heimue]

Originally Posted by namba209 Personal opinion, get your GT running with what it has first and enjoy it. It will take a fair amount of time to do the swap and you'll be without your GT. It's your first one, drive it and find out why we like them so much.

Amen to this!
I'm doing a 16V swap in my Kadett. Last time being on the road: 1989. Any more questions?

At least, I've learned something in the process...


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... where "Reverse" is...

I had to mention it again, if only to myself in post # 700...

Dieter

[Phoenix]

Dieter, that worked out perfect for me.

Opel Enthusiats love to see engine swaps finished but everyone doesn't particularly like to hear someone talk about doing one. Mainly because so many people get into it without realizing how much work is involved in it. There are way too many cannibalized, unfinished engine swaps out there. If you have the know-how, money, or know someone who has one or the other, we can't wait to see it.

Many people really like the stock engines and even though it's only a 1.9 liter engine is pretty peppy concidering the lightweight quality to our cars. One pretty straight forward engine swap that you might want to look into is one of the 2.0, 2.2, or 2.4 engines. There are a lot of threads on these engines that are basically the same as the 1.9s. They are however, European only engines and would have to be imported or purchased from someone who does import them like OpelGTsource.com.

[blancojp]

Hello and welcome to the club.
A 3.4L is very easy to install if you take your time and plan everything out. This engine is about a 15" block and the mounting points are located at 17.5" appart. The rails on the GT are about 20" appart and so happens that the factory motor crossmember centers are at 17.5" appart. SO with a little care and minor work, you can adapt the factory crossmember to accept the 3.4L making your job a bit easier. The motor mounts will have to change to early style Chevy and both of the mount pods will have to be the same heigth.

Just like realestate, location is the key to an easy installation. If you set the engine aft, you will be cutting the footwells for the next century. If you set the engine too forward, the vehicle will be nose heavy and drive like a cow. So the simplest way which will result in good balance is to locate the crankshaft pullie as close as possible to the suspension crossmember center. This is not the optimum but will get you close enough.

There are a few tricks like that which can make you installation go fast and easy. If you visit the ATL area and you are still interested in the conversion, let me know and I will show you a few things.

[namba209]

Originally Posted by blancojp Hello and welcome to the club. A 3.4L is very easy to install if you take your time and plan everything out. This engine is about a 15" block and the mounting points are located at 17.5" appart. The rails on the GT are about 20" appart and so happens that the factory motor crossmember centers are at 17.5" appart. SO with a little care and minor work, you can adapt the factory crossmember to accept the 3.4L making your job a bit easier. The motor mounts will have to change to early style Chevy and both of the mount pods will have to be the same heigth. Just like realestate, location is the key to an easy installation. If you set the engine aft, you will be cutting the footwells for the next century. If you set the engine too forward, the vehicle will be nose heavy and drive like a cow. So the simplest way which will result in good balance is to locate the crankshaft pullie as close as possible to the suspension crossmember center. This is not the optimum but will get you close enough. There are a few tricks like that which can make you installation go fast and easy. If you visit the ATL area and you are still interested in the conversion, let me know and I will show you a few things.

JB, where were you 7 years ago when I was contemplating this on Willit? You are right about cutting the footwell, I used the S-10 T-5 shifter centered in the console hole to locate the engine fore and aft, and cut the foot well almost to the speedo cable hole in the footwell. Because it is an SFI engine, I had to cut the wiper well for the intake plenum as well. IDK if the stock engine crossmember would allow for that, I just made up custom mounts for the whole mess. Maybe that's why it took so long.