Well finally found a 3.1 out of a 92 Camaro with 110k. Looked for 3.4 could not find.,,hopefully get to work on it this weekend.

 

If it is an automatic car also all you have to do is make sure the sensors are the same and put in a new water pump and oil pump then set it in .

 

YA

 

Ya Okay. Let u know progress thanks 89-bird

 

Your welcome Randy . Let us know your progress .

 

hey i got a quik question. well since we got a 3.1 should we still use the 2.8 L intake manafold on our 3.1? also should we use the injecters from the 2.8? every thing looks so much the same.

 

You should be able to just drop it in and run it as long as all your sensors are the same because the only difference is one is a 2.8 and the other is 3.1 all the parts interchange .

 

Hi 89-bird Thats what we thought, hopefully sunday we can get to work on it. Cant wait. Thanks

 

Thats good to hear hope everything works out good for you .

 

Bump Hi Randy did you get the engine in yet ?

 

You're going to have to use the upper plenum and TB from your 2.8 on that 3.1, and you're going to probably want to swap over your oil filter adapter since the 3.1 has a 3-wire oil pressure sensor and the 2.8 has 2 different ones that do the same job the 3-wire unit does. Unless, of course, you want to go and rewire everything (very expensive now, even off of eBay). Don't swap over the cold start injector in the back of the manifold as you don't need it, and you'll be stuck with it when you put it in unless you can get your hands on a plug for the intake hole.
I'd keep the 2.8 injectors handy, just in case, and since they do flow slightly better than the 3.1s do (up to the use of the 3100 in all FWD cars the injectors were actually smaller than those from the 2.8, 15.4# for the 2.8, 14.7# 3.1, and 18.6# for the 3.4/3100, not that you needed to know that).

:edit: AND DON'T FORGET TO REPLACE THE WATER PUMP! Or you could end up doing it anyways in 3 months! Also swap over your EGR system and possibly the passenger's side exhaust manifold if you can get it off of the old engine without breaking too many bolts, as you don't want to be stuck with the AIR system's check valve getting in the way of everything and possibly causing a vacuum leak (unless you have an AIR pump, of course), but you don't have any hookups for the digital EGR valve in either case on your 86, since the digital EGR wasn't even a dream in some engineer's head at that time.

 

Yea If I'm not mistaken the '90 3.1 is just like the '89 2.8 then the '91-'92 3.1 is when they went to electronic egr .

 

ITS ALIVE. Got 3.1 in a couple of days ago. Went fairly smooth. Started right up. Had issue with MAF sensor. Replaced runs great. Now I cant keep my son home. Blame you guys...HA HA... I want to thank 89-bird, 86transam.man, TomP, Gumby, bl85c, Maverick H1L and everybody else who gave the great advice. This site ROCKS. Maybe now I can give a little advice from time to time. Signed Randy and my missing in action son Tyler

PS There is a thread called stupid MAF sensor . TomP has a great chart on testing maf sensor. In our case the film was really bad. Tried cleaning it but did not work. Bought new one.

 

Your welcome and glad I could help .

 

https://www.thirdgen.org/forums/v6/1...af-sensor.html

 

Just a note the 2.8 in the pre 84' are known to throw rods. I had to do a swap from a 84 to and 89 block no probs.

 

Now you need a Third Gen Randy .

 

Now you need a third-gen too!!

 

When I was young I had a 1981 Camaro Z28. I loved it. I bought it brand new. the fun I had! When my son wanted a car, he wanted a 81 camaro to start with. He then found the 86 Firebird for cheap. When I was young I remember the new 3rd gens coming out and hated them. But now I really like the 3rd gen style. Ya... you are right, if and when I run accross another firebird, I will buy it. Maybe just a little newer 89 or up maybe....