X member mod..

[Chuck Leeper]

Am planning on using the stock x member for the build.
The ? is: What did you do to modify the mount, when using a 4L80E trans?
It appears that the mount bolts are directly above the x mbr, with the engine mounted at 1" in ft of the pass side firewall.
I'm not sure, does the 4L80 have different length tail hsgs? [Like 1 that may move the mount point to the rear??]
NE pics of such mod??

TIA,

 

[williamsGN]

.

 

[sweetv6]

there is a kit
for ls in a g body
www.brphotrods.com

slightly pricy

with a hummer h3 oil pan no x member mod.

hope it help

 

[Kevin87TurboT]

Hi Chuck,
It was a simple mod to factory crossmember to make it work with my 4L80E. Here's a pic. I actually moved the mount too low. In order to get my engine to sit at the proper angle, I had to run approx 1.0" worth of spacers between the mount and the crossmember. The 4L80E tailhousing mounts are all in the same location.

 

[Chuck Leeper]

Hi Chuck,
It was a simple mod to factory crossmember to make it work with my 4L80E. Here's a pic. I actually moved the mount too low. In order to get my engine to sit at the proper angle, I had to run approx 1.0" worth of spacers between the mount and the crossmember. The 4L80E tailhousing mounts are all in the same location.

Hmmnn...Evidently, I have the engine a bit closer to the firewall than you have. The lower bolts would end up against the x member.
I can't raise the rear of the engine up much more, as the bolt pattern bosses hit the tunnel.
It may be time to reconsider the engine location.

Thanks for the help!

 

[Chuck Leeper]

there is a kit
for ls in a g body
www.brphotrods.com

slightly pricy

with a hummer h3 oil pan no x member mod.

hope it help

U R correct on the $$
I used the H3 pan on my 55 install. Worked great w/ the added steering clearance. [Rear steer].
The pan I have now, is an H2, off of the 55 engine. [LQ4] Sump is deeper than I would like, but ......
I've fabbed a pair of poly mounts, similar to the BRP.

Thanks for the input...

 

[sweetv6]

i installing a ls ( lq4 ) engine in a g body for my good friend sebastien with a GT4718r
i will know if the brp hotrod kit fit good.

 

[Chuck Leeper]

Done deal... I cut that sucker up!
The ft x member will now accept most any LS pan. The plan is to use the H2 Hummer pan. May shorten the sump a bit. Not paying $400 for a pan....

Thanks all, for the replies.

HAPPY NEW YEAR!