TheBadazz

I want swap a 3.4 from a 2.8. I want to know can I still use the same cooling system? Do I need any extra parts? Last.... what are the best car to get it the motor from? Does a FWD 3.4 work?

WhiteBlaze

iTrader: (1)

cooling system from your 2.8 will work. As for extra parts... every project needs extra parts no matter what you do, expect to be nickel and diming a few things. The engine you need is from a 93 - 95 f body. The front wheel drive engines will not work without lots of fab work. (plus the intake would be on backwards)

TheBadazz

Thanks for the fast reply WhiteBlaze. If I can't find a 3.4 I'll use a 3.1. But I do prefer a 3.4 (I want to slap a turbo on it)

drdave88

iTrader: (3)

youd be better off waiting to find a 3.4, its a really great upgrade. even the guys w/ a 3.1 say it is. you can use the heads/intake from a 3400 (FWD 3.4) but you also have to replace the pistons. you also need to replace the ECM, some wiring and custom fab some bracketry.

do a search for the 3.4 swap and check out the tech article on it. after that you shouldnt have any additional questions, but if you do, were here to help. but make sure you do a very thorough search, it should all be there.

good luck to you and hold out to find that 3.4, its definetly worth it.... oh do a regasket on it, its worth the $100 or so. replace the waterpump, the oil pump, injectors...depending on how many miles you have on yours, etc.

pairtoe

iTrader: (4)

yeah if i could go back and do it over agin i would probally held out for a 3.4 instead of building the 2.8, but im more than happy with what ive got now.

WhiteBlaze

iTrader: (1)

I had a 3.4 in my blazer, absolutely loved it... of course... it had a 2.5 in it before... so that could be why I noticed a hell of a difference

Derickab

I rebuilt my 2.8 and still swapped out the engine for a 3.4. A waste of monry on the rebuild but worth it for the 3.4.

firstfirebird

iTrader: (3)

You know a 3.4 swap would only entail the short block and the 260 cam you got. Everything else can be used, including the heads Dave proted for you .

Why? With a MAF based system, it just measures airflow for fuel tables. I would think the MAP would have more of a problem with the swap.

Sixshooter is using a 7730 ECM that also controls his custom DIS (stock 3rd gen MAP ECM).

pairtoe

iTrader: (4)

yeah but thats why im running nitrous on it. and if i do blow this motor a 3.4 will def be taking its place...(even though i have 2 350's sitting around waiting.)

drdave88

iTrader: (3)

Why? With a MAF based system, it just measures airflow for fuel tables. I would think the MAP would have more of a problem with the swap.

Sixshooter is using a 7730 ECM that also controls his custom DIS (stock 3rd gen MAP ECM).[/QUOTE]

when i was looking into burning a chip, there isnt a complete bin file for the 7730. and i thought he used a different ecm out of an older cavalier with batch fire because it had a crank position sensor, our ECMs do not have anything for a crank position sensor. not to call you wrong or anything, but are you sure he used a 7730?

edit: i was wrong, there isnt a complete bin file for the 302 ECM, not the 7730. but depending on the year of his car, he may have MAF, not MAP. but the MAP still doesnt have a CKP does it? so how would he incorporate a CKP into the ECM and the whole system and make it run off it? i still think im either forgetting something about all this or missing something, fill me in or correct me if i am.

WS6LOVE

im planning on the same thing with my '83 bird. upull&pay sells complete engines for $200. if you take everything but the intake, i think (and could be wrong) it knocks the prie down to around $100. im getting a 3.4 from a '93-'95 f-body just as whiteblaze said. though im also getting the computer and fuely system out of it as well. i have too many carbed cars. i want 1 fuel injected!

Project: 85 2.8 bird

Karl has/did have a 2.8~3.4 swap boogie article, should be in the tech database (may even be in the engine swap forum)