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3.4 with 7730 Swap by Big Paul
Started on: 07-09-2014 11:58 PM
Replies: 1 (490 views)
Last post by: phonedawgz on 07-10-2014 02:14 AM
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Report this Post07-09-2014 11:58 PM Click Here to See the Profile for Big PaulClick Here to Email Big PaulSend a Private Message to Big PaulEdit/Delete MessageReply w/QuoteDirect Link to This Post
After a few passes at the autocross track, I decided that it's probably a good idea to get a backup plan together for when my daily driver 250,000 mile 2.8 finally quits on me. I picked up a 3.4 from a 93 Camaro with 50,000 miles for $200. The engine had sat for 3 years, but was in a car that was totaled by getting hit in the rear and ran before it was pulled (So I'm told...). This being my first engine swap, I'm a little intimidated. Before I start I plan to test the compression for each cylinder and soak the cylinders with some oil. I've also decided that as I have no crunch on time and the engine is very complete that It would make sense to switch over to the 7730.

To do this I will need the following (Correct me if I'm wrong) (Found on THIS thread, Thanks Phonedawgz):
1) 1227730 ECM along with the correct MEM/CAL for the engine
2) an adapter to hold the new PROM
3) The PROM itself

The ECM will be somewhat simple to find, but where can I find the PROM and an adapter? My car is an 86 GT 5 speed. The 3.4 has all the connectors and wiring intact with none of it cut.

To do the actual swap I've been reading up on THIS thread. I will need to strip down a 2.8 engine to put all accessories, brackets, oil pan, timing cover, valve covers, intakes, and some sensors onto the 3.4, I'm trying to find one that I can tear down so that I can start cleaning and painting the parts. I'm going to get a jig to drill the holes as well as an 88 flywheel.

Going with the 7730 I want to use the DIS and I am thinking about using the Camaro intake because of how well it flows. Has anyone done this? Has anyone used the Camaro exhaust manifolds? They are WAY bigger than the Fiero ones. Should I just stick with the Fiero intake/exhaust manifolds? I plan to get rid of the EGR and will not be using AC either.

What sort of preventative maintenance should I do to the engine? I don't want to remove the heads unless I need to. I was thinking: Water pump, Timing chain, intake/exhaust gaskets, wires and plugs, rear main seal, oil pan gasket, oil pump. Is there anything else I should do? Should I consider putting a cam into the engine while it is out?

I hope I'm not asking too many questions, I have this engine sitting in my garage and am very excited to get started on it, but I wanted to talk out my plan with someone to make sure I am on the right path. This is my first engine swap and the first time worked on an engine out of the car. I'm trying not to spend too much because it is just a 3.4, but I would like a bit more power. Nothing too crazy.

Don't laugh at my measuring device! This isn't my house and I'm not sure where everything is, but that's the best thing I could find... The Camaro exhaust is just under 5 cm ID.
**Trying to upload my other pictures, but my phone isn't working. I'll try again tomorrow. The Fiero exhaust is roughly between 3-4 cm OD.
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Report this Post07-10-2014 02:14 AM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post
MEM/CAL adapter -

Choice 1 - Carefully cut the PROM off leaving the legs still in place on the MEM/CAL. A dremel with a wheel works good but DO NOT cut into the knock board. Place a socket so the socket pins are on the outside of the PROM stubs. Solder carefully with a low wattage soldering iron and thin solder. - I put the thin pins of the socket on the outside of the fat pins of the old PROM so I can solder them properly. You can't solder them if the thin wire pins are on the inside and can't be reached.

You will also have to take your dremel and cut the hole in the blue cover larger to the size of the chip since it will now sit higher.

Choice 2 - Send it to me and I will socket your MEM/CAL and test to make sure it is socketed without any solder bridges or opens for $25 plus shipping.

Choice 3 - Buy the Moates adapter for $35.00 plus shipping. -

Google - 3.4 Camaro intake and select images and you can find a number of Camaro intakes in Fieros. Here is one of them

The problem for most people is they are still running a dist and that interferes with the reversed intake.
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