Looking to see how much you guys know about the 3.9 chevy motor [Archive] - GrandAmGT.com Forum

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chevy355blazer
10-28-2007, 12:17 AM
Im lookin to get a chevy with a 3.9 v6 how close is it to a 3800 or a 3400 or 3500 im not finding much for aftermarket parts for this motor.

O1GAGT
10-28-2007, 01:27 AM
Since the grand am never came with the 3900, there won't be much info here.

Check out 60degreev6.com as there are several topics on the 3900.

timka86
10-28-2007, 09:15 AM
i do believe that it has variable valve timing, which the 3400, 3500, 3800 do not have.

silvergtjrad
10-28-2007, 09:56 AM
Since the grand am never came with the 3900, there won't be much info here.

Check out 60degreev6.com as there are several topics on the 3900.

I agree, check out 60*v6, those guys will have a lot more info than us.

Ajaxus
10-28-2007, 10:07 AM
x3 for 60*v6, I think Ben was looking for a 3900 to take a crack at for more stuff to add to his store.

AaronGTR
10-28-2007, 10:30 AM
The current version of the 3500 (LZ4 motor) is actually based on the 3900 block and does have variable cam timing as well. The earlier version 3500 (LZ4) was based on the 3400 block and didn't have it. You can find all kinds of info on all the V6 engines (and others) on GM's powertrain website here GM media online (http://media.gm.com/us/powertrain/en/product_services/r_cars/index.html). They go all the way back to 2003 too if you click on previous models.

chevy355blazer
10-28-2007, 08:13 PM
Thanks guys.