Announcement

Collapse
No announcement yet.

1991-1997 DOHC

Collapse
  • Filter
  • Time
  • Show
Clear All
new posts

  • LQ1 Service Bulletin 57-61-09 Lifter tick (cold)

    LQ1 Service Bulletin 57-61-09 Lifter tick (cold)

    Dug up the GM Service Bulletin for "Lifter tick when cold", 57-61-09. '91 to '95 LQ1 (VIN X)

    http://mymonte.com/discussion/topic/...e-%2357-61-09/ The parts kit has been discontinued by GM long ago. My quest was to find sources for those parts; and complete the procedure on my '93 Lumina Euro 3.4 which was torn apart to replace the rear head gasket. There are three critical part numbers in the GM service kit (aside from gaskets and O-rings) required to perform this operation. Two of the three are readily available in the aftermarket--the 10-32 set screws, and the cup plugs. I hadda buy a box of cup plugs and a batch of set screws; if you can't find 'em locally, send me a PM. All gaskets 'n' seals are readily available, and are included in the gasket set I needed to replace the head gaskets (Fel-Pro HS9113PT1 Head Set.) This leaves one item that is expensive to source--the replacement thrust plates. Reading the bulletin, and...
    See more | Go to post

  • 3.4 DOHC Heads on a 3x00 Block

    3.4 DOHC Heads on a 3x00 Block

    Several people have talked about the possibility to use the 3.4 DOHC heads on the 3x00 engines. Some for performance, and some for replacment, where getting a 3.4 DOHC block might be difficult, but getting a 3400 (or even a 3100) block might be easier to come by.
    For these test fittings, I used a 1994 3.4 DOHC BLOCK, a 1994 3.4 DOHC REAR head, a 1999 3100 SFI BLOCK, and a 1996 3100 SFI head.
    This article is broken into 3 sections.
    • The first section is BASIC COMPARISONS where I compare the BLOCK of the 1994 3.4 DOHC, and the 1999 3100 SFI.
    • The second section is a 1994 3.4 DOHC head on a 1999 3100 SFI block.
    • The third section is a 1996 3100 SFI head on a 1994 3.4 DOHC block.

    This is the BASIC COMPARISONS between the 1994 3.4 DOHC, and the 1999 3100 SFI.
    This is a bare 3.4 DOHC block
    And this is a bare 3100 SFI block
    One of the biggest NOTICEABLE differences is the OIL VALLEY. The 3.4 DOHC does not have lifter holes, and it has a cover on it. When the engine is ASSEMBELED, the valley is actually OPEN to the air, and not sealed off like the 3100. The 3.4 DOHC has that cover on it to keep anything from getting in there.
    Here is the cover on a 3.4 DOHC
    This is me holding the cover in place on a 3100 block
    This is page 2 of the 3.4 DOHC heads on the 3x00 block. First of all, this is a 3.4 DOHC HEADGASKET on the 3100. Sorry it is so blurry, but the items I want to point out, I have more pics of. This is the first glaring difference (other than the oil valley). as you can see, half of the coolant ports are OPENED UP to the exterior of the block. If you go up to the first 2 pics, you can see the coolant passages around the cylinder. The 3.4 block is thicker and has an extra cooling port. Now this is the 3.4 DOHC HEAD on a 3100 block. The coolest thing is that it DOES BOLT RIGHT UP. I only have 2 bolts holding it in, but they are the same fitment. Now for the inconsistancies. First of all, this is looking at the INSIDE area of the engine. The 3.4 DOHC has oil passages to feed the oil back into the block. This is not really a problem on the 3100, however you would have to make a cover for the lifter ports that also allowed the oil return for the heads. This is the underside of the 3.4 head on the 3100 block from. You can see that it overhangs too much, and the coolant passages are exposed (you will REALLY see this later on in the 3100 head on 3.4 DOHC block pics) Here is a closeup of the exposted coolant port. Now here is a HUGH problem. Here is an exposed OIL PASSAGE for the head. You can see that the 3100 block has NO provision for this at all. Keep in mind that the 3.4 DOHC has to flow a LOT more oil than the 3100 because of th
    See more | Go to post

  • 3.4L (DOHC) Specifications

    ...
    See more | Go to post

  • OBD2 Tuning 3.4 DOHC

    OBD2 Tuning 3.4 DOHC

    The 97 4T65 in the Monte Carlo is almost bullet proof. I have been beating the crap out of my reman with my blower now for 2.5 years of daily driving vs the 60 NA that I couldn't get 1 year out of. 4 Trans in 50K miles. I'm a violent offender. Overfilling and royal purple atf are my secret. DHP will do 96 and 97 DOHC tuning, HPTuners only works with the 97 computer. 96 can not change line pressure, 97 can. 97 bin is double in size of the 96 bin. They changed every thing and it has every table that the 97 GTP has, includin...
    See more | Go to post

  • 3.4 DOHC Pistons

    3.4 DOHC Pistons

    Here is the TRW catalogue spec sheet for the 91-95 as well as the 96/97 pistons.

    TRW 3.4 DOHC Pistons
    Silvolite 3.4 DOHC Pistons Notice that the 96-97 pistons don't have as much compression distance but also have a dome to them. I dont know the exact amount of compression loss you will get when using these pistons with the 91-95 heads, but it goes against the common belief that 96 pistons raise compression. The Silvolite pistons are the EXACT pistons used in the 91-95 automatic. They do not list the 5 speed pistons which would rai
    ...
    See more | Go to post

  • 96/97 3.4 DDOHC Intake Manifold Swap for 91-95 Engines

    96/97 3.4 DDOHC Intake Manifold Swap for 91-95 Engines

    Pictures can befound here * Need to find this album *
    http://60degreev6.com/gallery/browseimages.php?c=27 Having just completed this swap myself and being MORE than impressed with the results, I felt the need to write up how to properly do this swap so everyone else can do it easily: First off, here are the major components you will need from your donor motor: Upper Intake (Plenum) Lower Intake and fuel rail ’96 Rear Cam Carrier Cover (Valve Cover) Intake pipe Throttle Body (Stock or whatever, but I recommend you start with a stocker) ’96 Plenum bolts (Trust me, they are different, Upper AND Lower) Plenum to intake pipe support bracket EGR Valve or blocker plate if Ben turned your EGR valve off Exhaust manifold to EGR pipe ’96 Throttle Cables (This is debatable, ‘92 will work with some modding, but the cruise cable will NOT ’96 Coolant pipe that runs from the water pump junction across the front of the motor to the lower intake. A new O-ring for that can be gotten at any auto parts store, I used a ½” I.D. Ύ” O.D. O-ring, it goes on really difficult, but will seal awesome. You’re also going to need new gaskets and vacuum lines. I have included descriptions and part numbers here: 12538693 - ’96 Intake gaske...
    See more | Go to post

  • 3.4 DOHC Valvetrain

    3.4 DOHC Valvetrain

    91-96 engines use a 35mm lifter, which are available in a lightweight design sold on the 60V6 store here. 97 went to the smaller diameter lifters so there are no options for them that I am aware of other than aftermarket stock replacements. 4.6 SOHC Ford springs (from a 97 thunderbird) will fit the 3.4 DOHC. They are a little stiffer and coil bind at a higher lift so a cam regrind will be tolerated more easily with them. You will need to use the 4.6 valve guide seals/seats, and pull the seal out. Then grind the seat part so the lip for the stock s...
    See more | Go to post

  • 3.4 DOHC Camshafts

    3.4 DOHC Camshafts

    Cam options for the 3.4 DOHC are few and far between. This is the most common reference given for regrinds.

    Steve Long Racing Cams INC.
    951-273-0816


    Cam Timing Because the cam gears are not keyed, the options for cam timing are nearly infinite. While this can cause a problem for the novice trying to set the cam timing, it also allows great flexibility for those with more experience. First, I must add that any painted timing marks are to be ignored. To learn more about how to set the cam timing, go here. It has been over a year now that the 13 degree exhaust retard spread across the internet as an easy...
    See more | Go to post

  • How to replace the alternator Alternate Text

    How to replace the alternator Alternate Text

    Special Tools Needed:

    Tie rod separator, Good hydraulic jack, set of metric sockets that has 15mm, 16mm, 18mm

    Intro Before you start find a day when you have about four to five hours to kill. Some things you may want to replace while here. You may have to get these prior to starting. 1. Oxygen sensor. It's cheap and easy to get to while here. 2. Donut gasket in the head pipe in the exhaust. Order it before you get under the car. Mine had a small leak. The bolts had soot all over them.
    ...
    See more | Go to post

  • How to change the alternator

    How to change the alternator

    Hopefully you know how to pull a rim off the hub. Here is the starting point for changing out the alternator.




    I think its a T-60 to get the bolts off the brakes. You need to pull the brakes off to have enough room.




    These are what the 2 bolts look like holding the front brakes o*n




    And the rotor with it.




    Get the brake out of the way. You can pull it completely but then you have to bleed the brakes.




    This is the shield you need to remove in order to get at the alt. I dont recall the bolt sizes but 8mm sounds right.




    Same shield.




    With the shield gone, you can see the CV joint as well as the shield o*n the auto tranny (manual is different)




    I think is trying to show the bolts to get the shield off the tranny.




    Probably just a better picture of those bolts.

    Lifting up on the control arm some. You wil...
    See more | Go to post
There are no articles in this category.
  • Filter
  • Time
  • Show
Clear All
new posts
Please log in to your account to view your subscribed posts.

Article Tags

Collapse

There are no tags yet.

Latest Articles

Collapse

  • LQ1 Service Bulletin 57-61-09 Lifter tick (cold)
    Schurkey
    Dug up the GM Service Bulletin for "Lifter tick when cold", 57-61-09. '91 to '95 LQ1 (VIN X)

    http://mymonte.com/discussion/topic/...e-%2357-61-09/ The parts kit has been discontinued by GM long ago. My quest was to find sources for those parts; and complete the procedure on my '93 Lumina Euro 3.4 which was torn apart to replace the rear head gasket. There are three critical part numbers in the GM service kit (aside from gaskets and O-rings) required to perform this operation. Two of the three are readily available in the aftermarket--the 10-32 set screws, and the cup plugs. I hadda buy a box of cup plugs and a batch of set screws; if you can't find 'em locally, send me a PM. All gaskets 'n' seals are readily available, and are included in the gasket set I needed to replace the head gaskets (Fel-Pro HS9113PT1 Head Set.) This leaves one item that is expensive to source--the replacement thrust plates. Reading the bulletin, and...
    03-02-2012, 02:48 PM
  • 3.4 DOHC Heads on a 3x00 Block
    bszopi
    Several people have talked about the possibility to use the 3.4 DOHC heads on the 3x00 engines. Some for performance, and some for replacment, where getting a 3.4 DOHC block might be difficult, but getting a 3400 (or even a 3100) block might be easier to come by.
    For these test fittings, I used a 1994 3.4 DOHC BLOCK, a 1994 3.4 DOHC REAR head, a 1999 3100 SFI BLOCK, and a 1996 3100 SFI head.
    This article is broken into 3 sections.
    • The first section is BASIC COMPARISONS where I compare the BLOCK of the 1994 3.4 DOHC, and the 1999 3100 SFI.
    • The second section is a 1994 3.4 DOHC head on a 1999 3100 SFI block.
    • The third section is a 1996 3100 SFI head on a 1994 3.4 DOHC block.

    This is the BASIC COMPARISONS between the 1994 3.4 DOHC, and the 1999 3100 SFI.
    This is a bare 3.4 DOHC block
    And this is a bare 3100 SFI block
    One of the biggest NOTICEABLE differences is the OIL VALLEY. The 3.4 DOHC does not have lifter holes, and it has a cover on it. When the engine is ASSEMBELED, the valley is actually OPEN to the air, and not sealed off like the 3100. The 3.4 DOHC has that cover on it to keep anything from getting in there.
    Here is the cover on a 3.4 DOHC
    This is me holding the cover in place on a 3100 block
    This is page 2 of the 3.4 DOHC heads on the 3x00 block. First of all, this is a 3.4 DOHC HEADGASKET on the 3100. Sorry it is so blurry, but the items I want to point out, I have more pics of. This is the first glaring difference (other than the oil valley). as you can see, half of the coolant ports are OPENED UP to the exterior of the block. If you go up to the first 2 pics, you can see the coolant passages around the cylinder. The 3.4 block is thicker and has an extra cooling port. Now this is the 3.4 DOHC HEAD on a 3100 block. The coolest thing is that it DOES BOLT RIGHT UP. I only have 2 bolts holding it in, but they are the same fitment. Now for the inconsistancies. First of all, this is looking at the INSIDE area of the engine. The 3.4 DOHC has oil passages to feed the oil back into the block. This is not really a problem on the 3100, however you would have to make a cover for the lifter ports that also allowed the oil return for the heads. This is the underside of the 3.4 head on the 3100 block from. You can see that it overhangs too much, and the coolant passages are exposed (you will REALLY see this later on in the 3100 head on 3.4 DOHC block pics) Here is a closeup of the exposted coolant port. Now here is a HUGH problem. Here is an exposed OIL PASSAGE for the head. You can see that the 3100 block has NO provision for this at all. Keep in mind that the 3.4 DOHC has to flow a LOT more oil than the 3100 because of th
    01-20-2011, 12:08 PM
  • 3.4L (DOHC) Specifications
    bszopi
    ...
    06-15-2010, 05:56 PM
  • OBD2 Tuning 3.4 DOHC
    Dave96z34
    The 97 4T65 in the Monte Carlo is almost bullet proof. I have been beating the crap out of my reman with my blower now for 2.5 years of daily driving vs the 60 NA that I couldn't get 1 year out of. 4 Trans in 50K miles. I'm a violent offender. Overfilling and royal purple atf are my secret. DHP will do 96 and 97 DOHC tuning, HPTuners only works with the 97 computer. 96 can not change line pressure, 97 can. 97 bin is double in size of the 96 bin. They changed every thing and it has every table that the 97 GTP has, includin...
    04-17-2010, 04:53 AM
  • 3.4 DOHC Pistons
    SappySE107
    Here is the TRW catalogue spec sheet for the 91-95 as well as the 96/97 pistons.

    TRW 3.4 DOHC Pistons
    Silvolite 3.4 DOHC Pistons Notice that the 96-97 pistons don't have as much compression distance but also have a dome to them. I dont know the exact amount of compression loss you will get when using these pistons with the 91-95 heads, but it goes against the common belief that 96 pistons raise compression. The Silvolite pistons are the EXACT pistons used in the 91-95 automatic. They do not list the 5 speed pistons which would rai
    ...
    04-14-2010, 01:23 AM
  • 96/97 3.4 DDOHC Intake Manifold Swap for 91-95 Engines
    OldSkoolGP
    Pictures can befound here * Need to find this album *
    http://60degreev6.com/gallery/browseimages.php?c=27 Having just completed this swap myself and being MORE than impressed with the results, I felt the need to write up how to properly do this swap so everyone else can do it easily: First off, here are the major components you will need from your donor motor: Upper Intake (Plenum) Lower Intake and fuel rail ’96 Rear Cam Carrier Cover (Valve Cover) Intake pipe Throttle Body (Stock or whatever, but I recommend you start with a stocker) ’96 Plenum bolts (Trust me, they are different, Upper AND Lower) Plenum to intake pipe support bracket EGR Valve or blocker plate if Ben turned your EGR valve off Exhaust manifold to EGR pipe ’96 Throttle Cables (This is debatable, ‘92 will work with some modding, but the cruise cable will NOT ’96 Coolant pipe that runs from the water pump junction across the front of the motor to the lower intake. A new O-ring for that can be gotten at any auto parts store, I used a ½” I.D. Ύ” O.D. O-ring, it goes on really difficult, but will seal awesome. You’re also going to need new gaskets and vacuum lines. I have included descriptions and part numbers here: 12538693 - ’96 Intake gaske...
    04-14-2010, 01:20 AM
Working...
X