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    1. #1
      Join Date
      Jul 2006
      Location
      Hackettstown, NJ
      Posts
      1,024

      LT in 2nd Gen Fbody engine mounting location

      Maybe I'm having a brain fart or maybe its a poorly made part. What did you use to mount the LT into a 2nd gen Fbody. Have a 75 frame, same 75-81. Used Dirty dingo sliding mounts with factory clam shell mounts.

      Issues I am having are:
      1) No pre drilled bolt hole patterns in frame line up with the clam shell mounts. Note: mounts are attached to adapter mounts on engine and lowered into frame.



      2) Even with engine/ trans & mounts placed in frame & roughly positioned, drivetrain sits rather high. Perhaps a 1.5" drop would be perfect.

      Visually, the legs of the adaptor mounts need to be shortened and / or tucked towards the engine more for the mounts to line up with a predrilled pattern.

      I understand having to modify things when building custom cars, but when a part says 'fits said car' and its no where close, one needs to questions things.


    2. #2
      Join Date
      Sep 2016
      Location
      Atlanta
      Posts
      46
      Country Flag: United States
      Go to musclerods.com the have everything you need to make that swap into an F body. Motor mounts, crossmembers, headers ECT ECT

    3. #3
      Join Date
      Apr 2001
      Location
      The City of Fountains
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      15,721
      Country Flag: United States
      Quote Originally Posted by Takid455 View Post
      Maybe I'm having a brain fart or maybe its a poorly made part. What did you use to mount the LT into a 2nd gen Fbody. Have a 75 frame, same 75-81. Used Dirty dingo sliding mounts with factory clam shell mounts.

      Issues I am having are:
      1) No pre drilled bolt hole patterns in frame line up with the clam shell mounts. Note: mounts are attached to adapter mounts on engine and lowered into frame.

      2) Even with engine/ trans & mounts placed in frame & roughly positioned, drivetrain sits rather high. Perhaps a 1.5" drop would be perfect.

      Visually, the legs of the adaptor mounts need to be shortened and / or tucked towards the engine more for the mounts to line up with a predrilled pattern.

      I understand having to modify things when building custom cars, but when a part says 'fits said car' and its no where close, one needs to questions things.
      Are you asking about a Gen V LT?

      Andrew
      1970 GTO Version 2.0
      1967 Cougar build
      GM High-Tech Performance feature
      My YouTube Channel Please Subscribe!
      Instagram @projectgattago
      Dr. EFI
      I deliver what EFI promises.
      Remote Holley EFI tuning.
      Please get in touch if I can be of service.

      "You were the gun, your voice was the trigger, your bravery was the barrel, your eyes were the bullets." ~ Her

    4. #4
      Join Date
      Jul 2017
      Location
      Island Lake, IL
      Posts
      109
      Country Flag: United States
      Since you have a Pontiac, make sure you have the Chevy mounts for a swap.

      Also, Speed Engineering has some swap parts like motor mounts and exhaust.

      https://speed-engineering.com/ls-con...t1-lt4-m2.html

    5. #5
      Join Date
      Jul 2006
      Location
      Hackettstown, NJ
      Posts
      1,024
      Yes - Gen V

      SE mounts are same or knock offs of ITC Billet.

      In talks with dirt Dingo regarding issue. Also spoke with MR. May go with MR if DD doesn't work out.

    6. #6
      Join Date
      Apr 2001
      Location
      The City of Fountains
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      Quote Originally Posted by Takid455 View Post
      Yes - Gen V

      SE mounts are same or knock offs of ITC Billet.

      In talks with dirt Dingo regarding issue. Also spoke with MR. May go with MR if DD doesn't work out.
      I would strongly consider using Holley mounts.
      1970 GTO Version 2.0
      1967 Cougar build
      GM High-Tech Performance feature
      My YouTube Channel Please Subscribe!
      Instagram @projectgattago
      Dr. EFI
      I deliver what EFI promises.
      Remote Holley EFI tuning.
      Please get in touch if I can be of service.

      "You were the gun, your voice was the trigger, your bravery was the barrel, your eyes were the bullets." ~ Her

    7. #7
      Join Date
      Jul 2006
      Location
      Hackettstown, NJ
      Posts
      1,024
      Unfortunately, Holley does not make any swap mounts for the Gen V into a 2nd Gen F body platform. At least that I have found.

    8. #8
      Join Date
      Apr 2001
      Location
      The City of Fountains
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      Quote Originally Posted by Takid455 View Post
      Unfortunately, Holley does not make any swap mounts for the Gen V into a 2nd Gen F body platform. At least that I have found.
      If you use their LS frame stands with their LT engine mounts, it will all fit together.
      1970 GTO Version 2.0
      1967 Cougar build
      GM High-Tech Performance feature
      My YouTube Channel Please Subscribe!
      Instagram @projectgattago
      Dr. EFI
      I deliver what EFI promises.
      Remote Holley EFI tuning.
      Please get in touch if I can be of service.

      "You were the gun, your voice was the trigger, your bravery was the barrel, your eyes were the bullets." ~ Her

    9. #9
      Join Date
      Jul 2006
      Location
      Hackettstown, NJ
      Posts
      1,024
      Provide links please for LT swap 2nd gen specific engine mounts. They have absolutely nothing for the 2nd gens gens listed in any way for an LT swap. The frame based engine mounts are nothing more than standard OE replacements but with poly inserts. They have 1st gen stuff, but nothing for 2nd. They don't mix based on my experience. Frames are completely different. They may 'fit', but relative locations will be off.

    10. #10
      Join Date
      Apr 2001
      Location
      The City of Fountains
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      15,721
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      Todd,

      Thanks for the clarification. I guess I didn't have all that quite right.

      Andrew
      1970 GTO Version 2.0
      1967 Cougar build
      GM High-Tech Performance feature
      My YouTube Channel Please Subscribe!
      Instagram @projectgattago
      Dr. EFI
      I deliver what EFI promises.
      Remote Holley EFI tuning.
      Please get in touch if I can be of service.

      "You were the gun, your voice was the trigger, your bravery was the barrel, your eyes were the bullets." ~ Her

    11. #11
      Join Date
      Jul 2006
      Location
      Hackettstown, NJ
      Posts
      1,024
      Appreciate the efforts Andrew. Had me 2nd guessing or thinking I was missing the link.

      In general, I am finding a good bit of mis information on LT things in general. It is and will be improved/ correct as time goe son. Its been a good learning curve to figure things out corrected vs 'it works'.

      I'm sure I'll have more questions as I dig through this.