3400 going into my Turbo STE

[TurboSedan]

i picked this up today for $150. it needs to be rebuilt but i'd say it's worth it. i was going to do a 3.1/3100 hybrid but i think i'm going to turbocharge this instead:

http://www.turbosedan.com/ste/3400/DSC02559.JPG

http://www.turbosedan.com/ste/3400/DSC02560.JPG

http://www.turbosedan.com/ste/3400/DSC02561.JPG

http://www.turbosedan.com/ste/3400/DSC02562.JPG

http://www.turbosedan.com/ste/3400/DSC02563.JPG

http://www.turbosedan.com/ste/3400/DSC02564.JPG

my plan is to rebuild it probably just using stock pistons but i'm not 100% yet as i'd like to eventually reach 350whp. i will be using modified TGP exhaust manifolds and TGP crossover pipe and downpipe. i'd like to use the .86 A/R turbine ball bearing Garrett GT3076R-WG turbo and plumb in a FMIC. TGP wiring harness & ECM/memcal. Getrag 282 5-speed with Spec clutch. i probably won't be able to swing the turbo and intercooler until next year but i'm going to try to get the engine and 5-speed installed with stock TGP turbo and intercooler by fall.

[TurboSedan]

the recipient:



it's sitting a little funny because i have the Intrax springs installed on the front but i don't have the FFP coilovers for the rear yet. i just got done upgrading to '95+ 11.25" front discs & strut/knuckle assemblies and '94+ 11" rear brakes and installing a big Addco sway bar. i also just bought some white GP 5-spoke wheels and will be going with 245/50s.

should have this out of there real soon! it runs really good but it's not going to cut it. i'll probably just hold onto it incase the 250,000 mile LH0/LG5 in my Cutlass goes.

[Guest]

On v6z24.com, 89jyturbo has just put through a GP for 3400 forged pistons, you could contact him, in posibly getting another set. IIRC they were around $575 or so for the set.

Also 89jy, turboed a bone stock 3400, with a remote mount set-up and dynoed 325 WHP, in his manual shift '89 Cav. Running 12 PISG and water injection, non intercooled.

The 3400 seems to be very robust when it comes to turbocharging.

[IsaacHayes]

Did 89jy blow his pistons in that motor?

[Guest]

Did 89jy blow his pistons in that motor?

In the first one. The skirt let go, we're not sure if it was a casting flaw/weak point, or just the added cylinder pressures. Since it was only one skirt, and this is the first one I had heard of letting go, I'm calling casting flaw on that one piston, for now.

[TurboSedan]

wow, 325whp is impressive from stock 3400 with no intercooler!

i got the engine partly stripped down today. i haven't gotten the heads, oil pan or timing cover off yet. looks like the LIM gasket failed; it looks like a milkshake inside as expected:

http://www.turbosedan.com/ste/3400/DSC02576.JPG

http://www.turbosedan.com/ste/3400/DSC02573.JPG

http://www.turbosedan.com/ste/3400/DSC02575.JPG

http://www.turbosedan.com/ste/3400/DSC02578.JPG

http://www.turbosedan.com/ste/3400/DSC02586.JPG

lots of sludge. should i be able to reuse the the roller rockers and roller lifters? if the cam lobes look ok can i just reuse it? i'm probably just going with a stock rebuild using stock pistons. i'm hoping all i have to replace is the timing chain set, oil pump, rings and bearings.

i know it's not really important but....is there anyway of knowing what year 3400 this is? all i know right now is that it's '96-'00 since it had the older spark plugs and no intake valley baffle. i guess i'm just curious.

i'm also wondering if i can use the TGP oil pan and my older CS-130 alternator and bracket on the 3400?

[bszopi]

I can at least tell you no on the oil pan.

[96mcls]

i know it's not really important but....is there anyway of knowing what year 3400 this is? all i know right now is that it's '96-'00 since it had the older spark plugs and no intake valley baffle. i guess i'm just curious.

if you look by the starter there is a VIN # on on the block, take the vin # and enter it on a site like carfax and it will give you the general info on the car it came out of. ie. year, make, model, engine, transmission, trim ect.

i'm thinking it has to be a 2000+ becuase of the egr, but i really have no idea

[Guest]

I can at least tell you no on the oil pan.

QFT, for several reasons.

First of which is the bolt pattern on the pan rail is very different, then the cross bolting of the 3400 mains, the windage tray also interferes with genII oil pan fitment.

Yes, you can retain the genII alternator and bracket, we retain these parts in the 3400 J-body swaps every time.

Check out www.domesticcrew.com for other swapping info.

BTW, you'll want to sell those TGP manifolds because people want them, and also because by the time you grind them to match the 3400 ports there is not enough material left, to seal correctly.

[Guest]

i know it's not really important but....is there anyway of knowing what year 3400 this is? all i know right now is that it's '96-'00 since it had the older spark plugs and no intake valley baffle. i guess i'm just curious.

if you look by the starter there is a VIN # on on the block, take the vin # and enter it on a site like carfax and it will give you the general info on the car it came out of. ie. year, make, model, engine, transmission, trim ect.

i'm thinking it has to be a 2000+ becuase of the egr, but i really have no idea

It's a 2000, I can tell by looking in this picture: http://www.turbosedan.com/ste/3400/DSC02560.JPG

The date stamp is right there on the LIM, near the T-stat housing.
Also the EGR has the "vertical flange", and the M2 injectors.
I can also tell you that it came from an Alero, due to the fuel lines.

I'm surious about this "lower intake baffle", since this is the first I've heard about such a thing in reference to the 3400.

Also I was not aware of any spark plug changes.

[IsaacHayes]

ya, 00 is on the LIM.
Raven: I'm guessing it's reference to the 3400 plenum. I think after 00 they changed it so equal flow to all ports was better. old school (like 94 3100) had equal flow, then when the 3400 came out it didn't, then went back to it in like 01 or something. This is inregards to the UIM.

[SappySE107]

Get the part number on the lower intake for me if you can. Like the heads, I think the lower intakes either changed designs or its the platform difference.

[TurboSedan]

I'm surious about this "lower intake baffle", since this is the first I've heard about such a thing in reference to the 3400.

Also I was not aware of any spark plug changes.

i was going off of the 60*V6 family tree area on this site. it says in 2001+ the 3x00 got high resistance spark plugs and wires and an intake valley baffle. i checked AC Delco's site and sure enough 2000 and 2001 3400 lists different spark plugs. this engine had the older plugs and no intake valley baffle.

thanks for all the info i should have the heads and oil pan off later today and i'll get those #s Ben. keeping the older alt/bracket is good news but i guess i'll just have to get a turbo oil return fitting put into the 3400 pan.

i know dbtk2 and sleeperred90tgp are using the TGP manifolds on 3x00 heads with alot of grinding but maybe this is a bad idea? i haven't looked closely for myself yet.

[Guest]

ya, 00 is on the LIM.
Raven: I'm guessing it's reference to the 3400 plenum. I think after 00 they changed it so equal flow to all ports was better. old school (like 94 3100) had equal flow, then when the 3400 came out it didn't, then went back to it in like 01 or something. This is inregards to the UIM.

That makes no sense to me. Maybe try explaining it different?

[IsaacHayes]

Raven: Quoted from the 60 store in large ported UIM item: "Please be aware that the large port manifolds changed over the years. 96-99 do not have equal flow across all ports." "2000+ have better flow distribution..." I'm guessing the "intake valley baffle" is refering to the 2000+ that helps flow distribution..