My custom 4L80E crossmember! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Robznob11 · 10-08-2016, 08:26 AM

Well guys I figured I would throw up some pics of this incase someone needed an Idea. I had a make shift homemade xmember that works but is a little flimsy. The 4l80e is heavy and with 550 hp I figured I would rather have a little more weight than things moving and breaking! So this is what I came up with. It's tacked in these pics ready for final welding. I designed it and a local fab shop put it in CAD and computer cut it out of 1/4 plate. It cost me $60 bucks and the time to put it together and weld it up. Let me know what you think. As you can see it is made to go over my 3" exhaust!

**mongocanfly** · 10-08-2016, 09:19 AM

That looks great..that oughta hold it..

BR3W CITY · 10-08-2016, 07:48 PM

Looks pretty solid man, she ain't goin nowhere.

I gotta ask, how much does it weigh?

Robznob11 · 10-08-2016, 07:51 PM

I will have to scale it but I'm guessing 10-15# it's not as bad as it looks. I asked to have it cut from 3/16th but they cut it out of 1/4. I went ahead and accepted it....I think the price was cheap...

**Advanced Design** · 10-08-2016, 08:21 PM

That is a good looking piece. What will it go into?

Robznob11 · 10-08-2016, 08:45 PM

This😆

BIGglaSS · 10-10-2016, 11:23 AM

Like! Looks more custom than the typical tube trans mounts.

Robznob11 · 10-12-2016, 11:03 AM

Here is a pic of the flimsy one that's coming out. Good for mock up but nothing else...

**michael bustamante** · 10-12-2016, 04:37 PM

looks like it might hit the cab floor. youre gonna have to post pics of it installed

Robznob11 · 10-12-2016, 04:48 PM

Na it wont' the arches on this one are taller than the new one....

Andy4639 · 10-12-2016, 05:46 PM

Nice work and yea that price was great!

That 4L80E ant going no where that's for sure!

**Advanced Design** · 10-12-2016, 09:46 PM

Quote:

Originally Posted by Robznob11

This😆

Very cool! Love to hear it run...

AustinBelair · 10-14-2016, 01:49 AM

I'm having a hell of a time finding a good trans mount for my father on his 4L80 in his 66. Can you have one made for me if you make a few bucks on it?

Robznob11 · 10-14-2016, 07:28 AM

Quote:

Originally Posted by Advanced Design

Very cool! Love to hear it run...

This was before paint job and muffler swap... https://youtu.be/Z6B_t2HSTuM

**Advanced Design** · 10-14-2016, 08:01 AM

Quote:

Originally Posted by Robznob11

This was before paint job and muffler swap... https://youtu.be/Z6B_t2HSTuM

Nice aggressive rumble!

Robznob11 · 10-14-2016, 08:07 AM

Quote:

Originally Posted by AustinBelair

I'm having a hell of a time finding a good trans mount for my father on his 4L80 in his 66. Can you have one made for me if you make a few bucks on it?

I contacted the guy yesterday to see if he saved the cad file..another guy was interested...if i helped people out it would be to have the two sides plates cut (no holes) the rest would be up to them.. my only worries is that I don't have a stock floor so it fits mine not sure of others. But im sure it could be modified pretty easy by who ever welds it up...it would be the bare bones build to your specs starter kit lol. He is supposed to get back to me on a price...I may take a bit.....but I'll find out

Robznob11 · 10-14-2016, 08:09 AM

Quote:

Originally Posted by Advanced Design

Nice aggressive rumble!

Yes sir it's alot more aggressive with 12" dynomax 3" bullets

10-08-2016, 08:26 AM	#1
Robznob11 Registered User Join Date: Feb 2004 Location: brownfield texas (west texas) Posts: 1,936	My custom 4L80E crossmember! Well guys I figured I would throw up some pics of this incase someone needed an Idea. I had a make shift homemade xmember that works but is a little flimsy. The 4l80e is heavy and with 550 hp I figured I would rather have a little more weight than things moving and breaking! So this is what I came up with. It's tacked in these pics ready for final welding. I designed it and a local fab shop put it in CAD and computer cut it out of 1/4 plate. It cost me $60 bucks and the time to put it together and weld it up. Let me know what you think. As you can see it is made to go over my 3" exhaust! Attached Images __________________ The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride! ........................ ___ .........________//__{\_____ ,,,,,,,/__(⊙)___//___/__(O)_/ @disciple2.rc 💪instagram💪 LED TAILS Last edited by Robznob11; 10-08-2016 at 09:23 AM.

10-08-2016, 09:19 AM	#2
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,670	Re: My custom 4L80E crossmember! That looks great..that oughta hold it..

10-08-2016, 07:48 PM	#3
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: My custom 4L80E crossmember! Looks pretty solid man, she ain't goin nowhere. I gotta ask, how much does it weigh? __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

10-08-2016, 07:51 PM	#4
Robznob11 Registered User Join Date: Feb 2004 Location: brownfield texas (west texas) Posts: 1,936	Re: My custom 4L80E crossmember! I will have to scale it but I'm guessing 10-15# it's not as bad as it looks. I asked to have it cut from 3/16th but they cut it out of 1/4. I went ahead and accepted it....I think the price was cheap... __________________ The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride! ........................ ___ .........________//__{\_____ ,,,,,,,/__(⊙)___//___/__(O)_/ @disciple2.rc 💪instagram💪 LED TAILS

10-08-2016, 08:21 PM	#5
Advanced Design Senior Member Join Date: Jul 2012 Location: Oblong, Illinois Posts: 7,028	Re: My custom 4L80E crossmember! That is a good looking piece. What will it go into? __________________ Doug Advanced Design’s 1977 Blazer Build Advanced Design's '48 'Burb Build Mrs Advanced Design's '72 Suburban Advanced Design's 56 BelAir LS swap

10-08-2016, 08:45 PM	#6
Robznob11 Registered User Join Date: Feb 2004 Location: brownfield texas (west texas) Posts: 1,936	Re: My custom 4L80E crossmember! This😆 Attached Images __________________ The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride! ........................ ___ .........________//__{\_____ ,,,,,,,/__(⊙)___//___/__(O)_/ @disciple2.rc 💪instagram💪 LED TAILS

10-10-2016, 11:23 AM	#7
BIGglaSS Registered User Join Date: May 2014 Location: ID Posts: 663	Re: My custom 4L80E crossmember! Like! Looks more custom than the typical tube trans mounts.

10-12-2016, 11:03 AM	#8
Robznob11 Registered User Join Date: Feb 2004 Location: brownfield texas (west texas) Posts: 1,936	Re: My custom 4L80E crossmember! Here is a pic of the flimsy one that's coming out. Good for mock up but nothing else... Attached Images __________________ The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride! ........................ ___ .........________//__{\_____ ,,,,,,,/__(⊙)___//___/__(O)_/ @disciple2.rc 💪instagram💪 LED TAILS

10-12-2016, 04:37 PM	#9
michael bustamante Senior Member Join Date: Sep 2007 Location: Albuquerque NM Posts: 7,862	Re: My custom 4L80E crossmember! looks like it might hit the cab floor. youre gonna have to post pics of it installed __________________ 1967custom

10-12-2016, 04:48 PM	#10
Robznob11 Registered User Join Date: Feb 2004 Location: brownfield texas (west texas) Posts: 1,936	Re: My custom 4L80E crossmember! Na it wont' the arches on this one are taller than the new one.... __________________ The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride! ........................ ___ .........________//__{\_____ ,,,,,,,/__(⊙)___//___/__(O)_/ @disciple2.rc 💪instagram💪 LED TAILS

10-12-2016, 05:46 PM	#11
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: My custom 4L80E crossmember! Nice work and yea that price was great! That 4L80E ant going no where that's for sure! __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

10-14-2016, 01:49 AM	#13
AustinBelair Registered User Join Date: Apr 2005 Location: Austin, Texas Posts: 300	Re: My custom 4L80E crossmember! I'm having a hell of a time finding a good trans mount for my father on his 4L80 in his 66. Can you have one made for me if you make a few bucks on it? __________________ My mother is a recent cancer survivor and this truck build is for her



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