Dimple dies for the win. Look trick as heck, save weight, and keeps the section strong. You can buy them individually.
Trans Crossmembers
- Thread starter TheBac
- Start date
Something like this would be nice, but not sure it could handle the diesel torque!
http://americanpowertrain.com/i-8426645-x-factor-adjustable-transmission-crossmember.html
Thank you for understanding where I was coming from.
This was what I was getting at originally. If Brian ever looks in here again, maybe he could weigh that extra one he has and then we can compare?
Nice idea! Like this?
Cheese o/swiss anyone???
Just wanted to give an update, the cross member won't fit 5 speeds because the shift linkage is lower and in the way. It seems people are more interested in weight than anything. I'm going to build a second prototype using a piece of rectangular tubing as the main support. Hope everyone isn't loosing interst, I hope to have the new prototype ready in a few days.
I was under my truck and noticed how close the linkage is....I even told myself to post about it on this thread....I forgot
Zfs cross members are different, I'm gonna build my own because it's actually bent up pretty bad from when ot was a co-op truck. With bolted engine mounts how much torque do you think the trans crossmember is seeing?
My brothers trans mount seperated completely, and he ran it at the strip without knowing, low 14s truck same truck as mine but basically nothing done to it other than efi. His trans actually slid over and dented the floor over where the shifter comes through the floor, and dented the tunnel out where the case was hitting from the underside. he literally had nothing holding the trans down at all. Just holding it from falling on the ground lol. He was dumping it at probably around 2200 rpm as he only runs a single disc clutch. So with literally nothing holding the trans from torqueing over. it didn't really change anything that was with non bolted engine mounts.i don't thing the torque made it dent the floor and tunnel I think that was just from the trans vibrating over into the floor.
On the other hand my truck had smoked engine mounts allowing my engine to torque over so bad on a launch that the front drive shaft was Hitting the rear engine plate and dug a nice notch into it. I'm not saying no torque load goes through the trans crossmember I'm just saying I don't think it's alot, I mean the trans is only mounted to it in the center I doubt the mount is physically capable of transferring any massive kind of load anyway.
On the other hand my truck had smoked engine mounts allowing my engine to torque over so bad on a launch that the front drive shaft was Hitting the rear engine plate and dug a nice notch into it. I'm not saying no torque load goes through the trans crossmember I'm just saying I don't think it's alot, I mean the trans is only mounted to it in the center I doubt the mount is physically capable of transferring any massive kind of load anyway.
ALOT. my old NBS 2000 1500 with a 4.3 and nv3500 liked to eat motor mounts and killed my trans crossmember/mount. apparently hitting 3ft-4ft whoops at 45mph for a few miles is pretty hard on that shit even with long travel suspension :rofl:
Lol I guess I was talking more for street application. But what about with bolted or poly engine mounts, wouldn't that keep the engine from torqueing as much therefore putting a huge stress relief on the trans mount? That's the other thing, the torque it does see the mount probably eats it up instead of the crossmember itself?
And a sled puller might be a different story, but if we're talking about a lighter crossmember I figure were leaning towards street trucks, but the extra clearance would benefit a off road truck or lowered truck obviously to.
nope. you dumping the clutch is a great replay of hitting whoops at the speed i was going. rear end off the ground, tires speed up, tires slam next whoop, tires slow dramaitically, then repeat. you slamming the clutch engaugement which is the engine spinning up and then dramaitically slowing down when the clutch catches, power still has to go somewhere (and it aint always tires) and the squishy trans mount will be the next to eat it. you have rotational forces trying to push the trans one way or the other. kinda like a helical gear cut creates torsional load in a trans. the engine mounts are so far forward, they can only stop so much movement.
I guess I just know how much my engine torqued before and after I bolted my mounts, I understand what your saying James for sure. I guess I just figured with better engine mounts you could get away with a lighter duty crossmember.
Maybe a gopro video is in order of the trans movement on a launch, I'm sure it would suprise me.
you can certainly get away with a light crossmember, just depends on your materials and design. Landon will get it dailed in and improve on it. its all part of R&D
Same reason the traction bars i use to build weighed 60lbs total (thats mounts, joints, bolts, everything together and both bars together) where others were twice that weight but were just as strong or stronger. Also why guys told me you could never run a coilover on these truck, let alone a stock height truck. where there is a will, there is a way. just takes time!
Still working on this, the prototype fit an LMM but not LBZ,LLY AND LB7. Been busy with other projects also so it's tough to juggle time around. Sorry for the delay!
