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24K views 123 replies 51 participants last post by  Flaboy806  
#1 · (Edited)
If any of you have ever had someone rev your engine for you while peering into your engine bay, you know the 4G69 has some serious engine movement issues to address. After reading post after post of how much the GT guys looooved their stiffies I decided to see if I could retrofit one to my GS.





Using the original mount as a guide, I created a template and took it to a local machine shop. I gotta say this is a great mod for the $, super easy install too. I still have the template if anybody want's to follow suit.

**UPDATE**
I have attached the template to the thread as a zip file. Instructions below:

When printing do not adjust print area.
Print on letter sized paper.
Transfer template to cardboard and test fit.
Make sure your machinist uses at least 1/8” thick steel.
If your machinist doesn’t have the ability to bend steel make sure they grind their welds down smooth.
If additional information is needed contact me at bejayve@gmail.com


:bigthumb:
 

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#18 ·
Yeah they are at work I ordered mine and it gave me the same part number for the gt as well so the do fit. Cus its the same part
 
#24 ·
Autozone I work there and energy suspision has them listed on the program that we use as that they will fit both motor types