3.5L heads from '05 v6 onto a '93 3.1?

[96buickregal]

Is this possible?
I found a pretty smokin deal. $125.00 with 30k miles for 3.5L v6 heads, from a 2005 engine.

Worth it?

[3400-95-Modified]

IIRC 2005 3500's were VVT motors... Double check that one, and then on top of that, unless you use a 3400 head gasket on a 3100 block you can't use 3500 heads on that... And I'm actually not sure if the valve clearance is the same or not either... 3400 head gaskets are really close to the combustion chamber of the 3500 head as it is, so you cant use old 3100 or 3.1 gaskets on them... which in that case means your bore will probably overlap the combustion chamber too, so it probably wouldn't work.

I think the general consensus on this board is if you want to run 3500 heads you should be starting with a minimum of a 3400 block.

[Superdave]

No, you cannot. The combustion chambers are too large to use on the small bore of the 3.1. 3.4/3400 is the limit.

[IsaacHayes]

Ship them to me along with the LIM.... lol

Nope, won't work because the 3.5 head combustion chambers would overlap the 3.1 bore. Need to go on a 3400 sized bore at least.

But that is a good deal!!


I believe 2005 was still LX9, but there might be some VVT motors starting that year... My UIM is from a 2005 Malibu max I know that much and it's the LX9 of course.

[Superdave]

the LX9 3500 and the VVT 3500 overlapped over those years.

the LX9 ran from '04-'06 (and possibly '07)

[SappySE107]

Never seen or heard of an 07 without VVT.

[IsaacHayes]

Only 1 vehicle in 07 had the lx9.. I forget which..

[SappySE107]

thanks for clearing that up....

[asylummotorsports]

The LX9 (3500) was actually the "Beta-test" for the planned VVT introduction.

But what a great test it was!

In fact they can be had fairly inexpensively in alot of markets from the yard as there is really no demand for them. Often less than 3400's.

http://www.car-parts.com

I can find them in the $500 range most days.

FWIW

[double00bu]

yeppers,my 3500 is out of a 06'' G6 it's a non-vvt
and yea they are cheap ,got mine complete with 4k on it,for $295 bucks

[IsaacHayes]

damn, can't beat a 200hp engine for $300 bucks!

http://www.automotive.com/2007/12/buick/rendezvous/specifications/index.html

There is the 07 lx9 car.. Buick Rendezvous

[96buickregal]

So would an engine out of a '06 Pontiac G6 drop right into a beretta? And would the getrag bolt right onto it? I might just go that route its prolly the best way to bring up the HP.

[3400-95-Modified]

bolt right in... almost... Bolt to a Getrag Yes...

Some modifications are needed in older pre 91 berettas IIRC for the passenger side engine mount. Also some trans leg brackets unless you plan on using the long passenger side axle.

And the typical parts... 3x00 fuel rails, larger injectors to be safe, 3x00 manifolds unless you plan to make exhaust for the 3500 ones, need an external crank trigger, in the WOT-Tech store... and a few other items... I'm sure some will chime in.