New crossmember or short tube headers? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

killa496 · 12-29-2013, 07:25 PM

I have a 77 lwb that i need to replace the exhaust.It has long tube headers now . Who sells a CHEAP! Transmission crossmember to clear a 3" exhaust? Went to the junk yard to find a double hump crossmember. No luck. Pics of your setup PLEASE!!

SkinnyG · 12-29-2013, 07:35 PM

I just worked around with what I had, on my '77 l2swb. Duals, but still what you'd need to do to bring the passenger side over to the driver's side for single exhaust (if you went that way).

killa496 · 12-29-2013, 08:05 PM

Nice setup. Is that a kit? U have the same setup as me. I just hate how the drivers side has to be.

SkinnyG · 12-29-2013, 08:34 PM

Not a kit - I put it together with a wack of mandrel U-s and some straight tube.

I debated long and hard about modifying the driver's side of the crossmember when a student of mine (I teach high school Mechanics) stripped a trans mount hole in the case and the crossmember had to come off to Heli-Coil it. I decided it would be easier to just suck it up and run the pipe over. I couldn't figure out any "quick and dirty" ways of putting a structurally-sound hump in the driver's side.

76stepside01 · 12-29-2013, 08:48 PM

I had the same problem so I made a new one which gave me plenty of clearance.

IMG_5979 by Jesse Rieger, on Flickr

IMG_5984 by Jesse Rieger, on Flickr

SkinnyG · 12-29-2013, 08:58 PM

That looks very reasonable. Was the e-brake cable an issue at all? Does it rattle against the exhaust?

KQQL IT · 12-29-2013, 09:51 PM

3/4-1 ton cross member. Small notch for the trans mount. Tucks 3"

76stepside01 · 12-30-2013, 02:26 AM

Quote:

Originally Posted by SkinnyG

That looks very reasonable. Was the e-brake cable an issue at all? Does it rattle against the exhaust?

We havent put the e-brake cable back in yet but im pretty sure it will have to be modified.

SCOTI · 12-30-2013, 03:39 PM

Quote:

Originally Posted by killa496

I have a 77 lwb that i need to replace the exhaust.It has long tube headers now . Who sells a CHEAP! Transmission crossmember to clear a 3" exhaust? Went to the junk yard to find a double hump crossmember. No luck. Pics of your setup PLEASE!!

Define 'cheap'? You could merge 2 OE x-members to make one that's uniform. I use ECE's trans crossmembers....
http://www.earlyclassic.com/catalog.aspx

killa496 · 01-11-2014, 10:57 AM

are there any steps i need to take in removing the crossmember?

INSIDIOUS '86 · 01-11-2014, 12:40 PM

Quote:

Originally Posted by killa496

are there any steps i need to take in removing the crossmember?

Support the trans tail shaft when you go to pull it out.

12-29-2013, 07:25 PM	#1
killa496 Registered User Join Date: Jul 2011 Location: mesquite Posts: 19	New crossmember or short tube headers? I have a 77 lwb that i need to replace the exhaust.It has long tube headers now . Who sells a CHEAP! Transmission crossmember to clear a 3" exhaust? Went to the junk yard to find a double hump crossmember. No luck. Pics of your setup PLEASE!!

12-29-2013, 07:35 PM	#2
SkinnyG Registered User Join Date: Feb 2012 Location: Beautiful BC, Canada, eh?! Posts: 2,267	Re: New crossmember or short tube headers? I just worked around with what I had, on my '77 l2swb. Duals, but still what you'd need to do to bring the passenger side over to the driver's side for single exhaust (if you went that way). __________________ 1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, turbo, LS 1977 Silverado: Shortboxed & dropped, potato-potato V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag Lotus Super 7 Replica: Scratch-built street-legal rollerskate

12-29-2013, 08:05 PM	#3
killa496 Registered User Join Date: Jul 2011 Location: mesquite Posts: 19	Re: New crossmember or short tube headers? Nice setup. Is that a kit? U have the same setup as me. I just hate how the drivers side has to be.

12-29-2013, 08:34 PM	#4
SkinnyG Registered User Join Date: Feb 2012 Location: Beautiful BC, Canada, eh?! Posts: 2,267	Re: New crossmember or short tube headers? Not a kit - I put it together with a wack of mandrel U-s and some straight tube. I debated long and hard about modifying the driver's side of the crossmember when a student of mine (I teach high school Mechanics) stripped a trans mount hole in the case and the crossmember had to come off to Heli-Coil it. I decided it would be easier to just suck it up and run the pipe over. I couldn't figure out any "quick and dirty" ways of putting a structurally-sound hump in the driver's side. __________________ 1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, turbo, LS 1977 Silverado: Shortboxed & dropped, potato-potato V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag Lotus Super 7 Replica: Scratch-built street-legal rollerskate

12-29-2013, 08:48 PM	#5
76stepside01 Registered User Join Date: Aug 2011 Location: Canada Posts: 139	Re: New crossmember or short tube headers? I had the same problem so I made a new one which gave me plenty of clearance. IMG_5979 by Jesse Rieger, on Flickr IMG_5984 by Jesse Rieger, on Flickr

12-29-2013, 08:58 PM	#6
SkinnyG Registered User Join Date: Feb 2012 Location: Beautiful BC, Canada, eh?! Posts: 2,267	Re: New crossmember or short tube headers? That looks very reasonable. Was the e-brake cable an issue at all? Does it rattle against the exhaust? __________________ 1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, turbo, LS 1977 Silverado: Shortboxed & dropped, potato-potato V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag Lotus Super 7 Replica: Scratch-built street-legal rollerskate

12-29-2013, 09:51 PM	#7
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,256	Re: New crossmember or short tube headers? 3/4-1 ton cross member. Small notch for the trans mount. Tucks 3" __________________ " That didnt make it any newer " " Dont antique the equipment "

01-11-2014, 10:57 AM	#10
killa496 Registered User Join Date: Jul 2011 Location: mesquite Posts: 19	Re: New crossmember or short tube headers? are there any steps i need to take in removing the crossmember?



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