CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

Twizted Product Release: High Clearance Engine Crossmember w/Optional Track Bar Mount

TwiztedEngineering

1/2 ton status
Joined
Feb 9, 2008
Posts
117
Reaction score
0
Location
Broomfield, CO
New Product Released! Part#XMGM7387-Engine - A Heavy Duty High-Clearance Engine Crossmember for 1973-1987 GM Trucks and Blazers. If you've switched to crossover steering, you know that your draglink will come really close or, in most cases, actually hit your factory engine crossmember! Also, you've probably experienced the dreaded "death wobble" effect that happens oh so often with crossover steering. This is due to the axle actually moving side-to-side under the vehicle while the steering linkage reamins in a stable location (think the opposite of you moving the steering with the axle staying in the same place... if the steering stays put and the axle moves, the tires turn a little too, causing wandering steering with stiff leaf springs, and with really soft, flexible leafs - "death wobble" :crazy:) The solution? A Track Bar (also known as a Panhard Bar in some circles) to locate the axle side-to-side under the truck. This is in wide use in a number of vehicles, even from the factory (go look at any leaf spring Superduty and you'll see one there!)


The biggest problem in adding a track bar to a Chevy truck is how to mount the upper side of it... Clearance issues between the engine crossmember, pitman arm, draglink, etc... and worst of all - frame rails that are made out of the most brittle steel so if you weld or even bolt to them, they CRACK! :mad: So we've come up with a solution that works out all these problems! Our crossmember has a number of features that you won't find anywhere else:
  • High Clearance Design - Plenty of room for Draglink and Track Bar movement
  • Fits tight to Small Block Engine with Stock Oil Pan
  • 3-Piece Design - Remove only the Center Section and gain full access to your Oil Pan! ;)
  • 12 Bolts Hold the complete crossmember to both framerails and both motor mounts, gaining strength over the factory design
  • Integrated Track Bar Mounting Tabs to accept a small Johnny Joint (available without these tabs if you don't need them also)
  • Minimal grinding and drilling for a straightforward installation
  • Works with most vehicles lifted 4" or more (if you are closer to stock height, then order without track bar mounting tabs and it will work just fine!)
This crosmember will come as shown (bare steel, fully welded) with all bolts, nuts & washers and instructions for $225 off our website. Forum Members get it now for $200 even (with track bar mount) or $190 (without Track Bar Mount) - just PM me!

Darren

Here are some pics of it installed in a K5 Blazer...
XMGM7387-Engine-01_med.jpg
**Full View from Behind**
XMGM7387-Engine-04_med.jpg
**Pass Side from Front**
XMGM7387-Engine-05_med.jpg
**Driver Side from Front**
XMGM7387-Engine-07_med.jpg
**Driver Side from Behind**
XMGM7387-Engine-08_med.jpg
**Pass Side from Behind**
 
Will it fit a Big Block? If not are there planes for a Big Block compatable one in the near future? Will it fit if the axle is not in the stock location (moved forward)?
 
Last edited:
i hate to say this but you need to paint that thing a specific color to be able to show it off better. i cant pic out 1/2 of it in those pics.

but what i can see i do like.
 
My questions are: One will it fit a truck with a diesel. Two does the engine need to be removed or just supported while this is installed. Three does it retain any of the factory motor mounts brackets or are they completely replaced.

Also its hard to tell from the pictures which side the pan-hard attaches to the cross-member. Other then that it does look like a solid product from what I can see.
 
Questions Answered...

romeolimagolf: I'm not sure if it will fit a big block/diesel yet, as I haven't had one of those trucks at the shop to test fit it... As soon as I get one though, I will definitely try it, and if it doesn't fit, will certainly re-design a second one for those vehicles!
As far as axle location goes, that shouldn't matter much at all in this case. The only thing that might be any issue at all is the track bar mount - on a stock vehicle it sits just above the forward inside u-bolt nut (which any excess threads can be trimmed off), and with the axle moved forward you would be placing the full u-bolt plate under it (where your bumpstop would normally touch). If you have some lift in your vehicle, and don't come close to the (factory) bumpstops when your axle moves upward, you should be fine.

sweetk30: Yes, I completely agree! But those were the only pics we had to work with today. I've included a CAD screenshot of it below to help out in terms of visualizing it better. Will post better pics when I can take them :wink1:

KirsL: See first answer - not 100% sure on the big block / diesel engines as of yet, but hope to check it out soon.
The engine does not have to be removed, or even supported for the install. This crossmember bolts to the motor mount brackets just inside the framerail (no need to remove any motor mount bolts except for the very bottom one on each side so that the mounts themselves never even move). When installing the crossmember, if the engine settled down even a little, as soon as the bolts are tourqed everything is forced right back up into the factory location.
The Track Bar (Panhard) Mount is on the Driver's Side. You need to design the track bar to move in conjunction with your steering linkage, and since the draglink (in a crossover steering setup) comes from the driver's side frame (i.e. the steering box) to the passenger side of the axle (the knuckle), you must make the track bar in a similar fashion - from the driver's side framerail to the pasenger's side of the axle tube. This will minimize "bumpsteer" and the chance of the dreaded "death wobble"!

CAD Screenshot of Design:
XMGM7387-Engine_CAD.jpg
 
Waiting for Big Block / Diesel

Anyone around have a big block and or a diesel that's near Denver, CO that wants a discount on one of these for being a mesurement ginnea pig??

-Darren
 
I can take some mesurments for ya like bottom of fraim rail to oil pan so on i think this is the only issue?
 
I can take some mesurments for ya like bottom of fraim rail to oil pan so on i think this is the only issue?
Yeah, we could work on it that way... Bottom of framerail to bottom of oil pan would be most important, but I'd also like to get a measurement across to be sure that the width is exactly the same also. The rear bolt holes in my crossmember attach to the rear bolts that hold the facory crossmember in place - the rest are rivets and/or holes that you will drill. If you can get me an accurate measurement of center to center across these two bolts, that would be really cool (the oil pan will be in the way for a direct tape measure across, so you'll have to be creative to get an accurate dimension :) Let me know what you think!

-Darren
 
Sounds good i will try and make a cardboard template for you with pics and the mesurments.Its raining now and im going to tds this weekend but ill get on it mon when i get home.
 
Sounds like a plan... Hopefully there just needs to be a little more clearance between the crossmember and the oil pan - that'll make it nice and simple. But if not, and it's more complicated, we'll make it work anyways!!

Darren
 
A Few more pics with Track Bar installed

We were able to get a few more pics of the crossmember today, outside with the track bar installed so you can really see how it all works together. The track bar mounts just behind the steering arm (with crossover), almost at the same level so getting the angles and lengths of the track bar and draglink close to equal is easy!

Here are some links to the pics, rather than posting large pics here in the forums...
From underneath the truck, looking up and forward: http://gallery.twiztedeng.com/index.php?album=product-photos/xmgm7387-engine&image=IMG_0058.jpg

From Driver's Side Wheelwell Opening: http://gallery.twiztedeng.com/index.php?album=product-photos/xmgm7387-engine&image=IMG_0061.jpg

From Passenger's Side Wheelwell Opening: http://gallery.twiztedeng.com/index.php?album=product-photos/xmgm7387-engine&image=IMG_0070.jpg

With the Truck Flexed this much...: http://gallery.twiztedeng.com/index.php?album=product-photos/xmgm7387-engine&image=IMG_0072.jpg we still have over an inch of clearance from the top of the u-bolts to the frame-side track bar mount...: http://gallery.twiztedeng.com/index.php?album=product-photos/xmgm7387-engine&image=IMG_0071.jpg
 
I like it. Looks like it functions pretty well. Now just to wait for you to make it fit with the diesel.:rolleyes: There is one other thing though are you making the axle side mount for the track bar also? Be pretty cool if it came as a kit and all you had to add was the bar itself and the style of joints that you plan to use.
 
so do you have anything to mount the track bar to on the passenger side?
Yes, we have a mount that welds to the axle for the passenger's side right now, designed for a Dana60. It places the track bar joint just above the u-bolt plate and forward of the axle tube centerline just a bit to align it with most crossover setups and also clear the bumpstop during up-travel of the suspension.

I like it. Looks like it functions pretty well. Now just to wait for you to make it fit with the diesel.:rolleyes: There is one other thing though are you making the axle side mount for the track bar also? Be pretty cool if it came as a kit and all you had to add was the bar itself and the style of joints that you plan to use.
Yep, the Dana60 Axle-Side Weld-On mount is designed, the GM 10-bolt and Dana44 is coming in the near future (just need a bit of time to re-design the D60 mount to fit the D44 properly). Also, the track bar itself is available in WIY (Weld-It-Yourself) kit form as two joints, two jamnuts, two tube adapters, and a length of tube -or- I would be willing to pre-fabricate them for you once you have the crossmember in place and I get a length measurement. Of course if you are welding the axle tube mount, then welding up the track bar itself shouldn't be a problem either. That being said, I have another question to pose to everyone....

How many of you have welders or access to welders in your garages? A lot of the upcoming products I have in mind are tailored to the home DIY'er that can weld. I have a feeling that many of you would prefer a simple product that you could weld on easily over a complicated bolt-on system that requires holes to be drilled and tons of bolts to be tightened?? I know from installing TONS of lift kits and things at my shop that I certainly perfer it that way... Of course with the Chevy Frames being as brittle as they are, certain things will always have to be bolted (like this crossmemer). Curently the question comes from the axle-side bracketry... A simple weld-on bracket is going to be much less expensive (and stronger if welded properly) than a complicated bolt-on setup. How many of you would prefer the bolt-on? Is it worth the design time to even make one up? Post some thoughts for me!

Thanks,
Darren
 
Diesel & Engine Crossmember

Quick Question:
Are you guys that have Diesels all running the 6.2L v8 model (like that found in the CUCV's) - the version that looks remarkably like the Small Block 350 gas engines? ...Or was there a Straight 6 deisel also offered in these trucks? I swear I've seen a Straight 6 Diesel in one of the K5's, but I'm not sure if it wasn't some sort of conversion.
Let me know, so I can be sure this crossmember fits properly!! :wink1:
 
I have an 82 3/4 ton with a big block if you want to send me one for a trial fit. I will paint it yellow and take pictures of it
 
Top Bottom