engine swap

[3.1POWER]

So my friends 3.1 motor in his 200? malibu siezed up. i have a spare older 3.1 motor from a 91 olds. Can i just swap the intake, valve covers and all the bolt on stuff and drop in that motor or are they too different?

[Alxsmt]

i would imagine you could. i would swap the heads too. that may be the only way to get the intake plenums on

[PCGUY112887]

When you say 200?, do you mean it's 2000+ 3.1 in a malibu? If so, then no, stuff from a 3.1 91 olds will not work. They are totally different generation engines, the 91 is called the 3.1 but after 94 they became 3100 motors, much different heads/intakes/etc.

Just get a 3100 from the junkyard and swap it in, their a dime a dozen. Or even a 3400 if he wants some more powah for a bit of extra work.

[Alxsmt]

i always thought you could swap out the 3.1 heads for some 3100 heads and if you do that the intakes would fit.. weird

[1988GTU]

The 3.1 cannot be controlled by obd2 due to the SFI. You must stay 3100 or <.

[Superdave]

It'll work but throw multiple trouble codes, lack of a cam position sensor and a 24x crank sensor would be the big ones.

bad idea, just grab another 3100 for it.

[RedBird]

all this aside from that fact that it's illegal to put an older motor into a newer car. :P i mean if the design is the same it's ok but you can't put that old of a motor into that new of a car. it's 3x00 or bust, according to the feds lol

[3.1POWER]

thanks guys... prolly just pick up another motor....