i have a 5.3 lm7 using original 700r4 and drive shaft,.i purchased k frame mounts and engine motor mounts off n said it placed ls motor in factory position of the original 305.Issue is that now the driveshaft is one inch short.

i see that umi has k frame mounts that allow for and aft and up to moving the motor 1 inch back.What have others used or done.

Respectfully

 

The UMI 2406-B motor mounts worked perfect for me.There is other holes in the stock k frame that i used one of them for the back bolt hole.Also it allowed me to get correct driveshaft fit and use the stock 700r4 and trans cross-member.I also used the same mounts attached to the motor pictured above.

 

I had the same issue but used holley's blackheart motor mounts and trans xmember. ended up getting a new custom driveshaft.

 

The UMI ones have a lot of adjustment to get the engine for and aft in the stock k member. I have a new set for sale if interested. PM for details.

 

wish i would have checked or known.

any trick to getting bottom nut on the top motor mount bolt on.the hole that is closest to fire wall.im struggling.i dont want to drop control arm unless i have to.

 

You know what this is the same problem I having with these mounts. Do you mine posting a picture of you drive shaft connected so I can see if we have the same shortness?