When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
86 firebird ls swap and original trans/driveshaft short
LTX and LSXPutting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.
86 firebird ls swap and original trans/driveshaft short
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.
Re: 86 firebird ls swap and original trans/driveshaft short
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.
Last edited by hirdo; 08-10-2019 at 07:45 AM.
Reason: left out about using same mounts that bolt to motor.
Re: 86 firebird ls swap and original trans/driveshaft short
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.
Re: 86 firebird ls swap and original trans/driveshaft short
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?
06-02-2019, 08:16 PM
