excessive engine angle
 

What’s everyone doing about the engine/trans angle? I have an lq4 and 4l80e.

I am using the stock trans crossmember. I have the 73+ c20 engine stands and my angle was about 6.5 degrees when the frame is set level. I had about 1.25” between the oil pan and crossmember.

I remembered a discussion about the 73+ c10 mounts so I got those and installed them. I also put 1/2” spacers at the trans mount. I’m at 4.5 degrees. Now the Oil pan is about 1/8” from the crossmember..

Is 4.5 to 5 degrees going to be ok? My truck is a 2 piece drive shaft if that changes anything.

Re: excessive engine angle
 

I don't see an issue with it. As long as you can get your rear end the appropriate corresponding angle, the driveline will be happy.

Re: excessive engine angle
 

I think mine is around 5 degrees.

Re: excessive engine angle
 

I just pulled my stock motor and trans this past weekend and the trans yoke was at 5 degrees. Planning to put the 4L80 and the same.

Re: excessive engine angle
 

yeah ..not terrible.. like brew said, as long as your rear diff angle matches your engine/trans angle it be all good...just imagine them running as 2 imaginary parallel lines...I always like posting this vid whenever a driveline angle question comes up....https://www.youtube.com/watch?v=Idk3BVDVHq4

Re: excessive engine angle
 

Thanks for the feedback. Makes me feel better. I will get the engine at the least angle possible and adjust the carrier bearing and rear diff as necessary.

Re: excessive engine angle
 

As long as the rear end is the mirror image angle, should be OK as long as lubrication isn't compromised by the angle, and I can't imagine 5 degrees would cause a problem.

Re: excessive engine angle
 

Does the same apply to a 2 piece driveshaft?

Re: excessive engine angle
 

I dont think you could get and ls engine in a vehicle at such and extreme angle and make it fit into the vehicle to be a problem . Just make sure its proper to your drive shaft . This is more important to the drive train .

Re: excessive engine angle
 

OOohh, that's a good question, I don't know off the top of my head.

The problem is that for every u joint you need a second u joint with the OPPOSITE angle to "cancel" out the leverage of one. When one is at max leverage the other is opposite.

But with a two-piece driveshaft you just have that one in them middle, and I don't know how to deal with geometry on that one. I'll sit back and learn I guess!

Re: excessive engine angle
 

i just stabed mine in and didnt set any angles i have a 2 pieces shaft no wierd vibarations or anything yet 2k miles in

Re: excessive engine angle
 

On a 2pc shaft, you need to veiw the first shaft as an extension of the trans (pretty much), but give that 1st u joint off the trans about 1 degree, to work the grease into the joint. The last 2 joints should pretty much match up.....is it leaf or coil spring? On a leaf spring truck, you may want to have the pinion @ a slightly tipped down angle, as it will rock up on the throttle. dont ask, how I learned this! I have a neighbor, with a 67 camaro BB/4 spd, he runs "broke back" angles, a 1 pc shaft....in other words, the trans is 3 degrees down to the rear, & the pinion is 3 degrees down to the front. It cruises fine like that, & under a hard wrap on the springs, it handles the 1/4 mile just fine! Fruit for thought? Longhorn