where's all these double hump crossmembers??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*rage'nrat638* · 03-25-2003, 08:53 AM

willing to pay big money for one of these baby's have 85 c-10 swb
keep eyes pealed.........need soon......

what trucks did they come on???????

PHOENIX · 03-25-2003, 12:22 PM

Mark, run a search and find the one I took pictures of for Tom. Tom SHOULD

, be bringing the crossmember back to me soon, since he couldnt use it. Anyway if Tom ever gives it back Im gonna keep it because I think Ill need it some day soon. But if you look at those pictures and thats the kind you want let me know, I can check some yards out here next time Im out. I remember seeing some last time, I think.

Ohh yeah I see them often on Suburbans.

bigblock73 · 03-25-2003, 01:41 PM

Why do you need one soo bad, to route dual exhaust? If that is the reason, it isn't a good one. Find a good exhaust shop...it can be done. My truck doesn't have one and neither did my last...both had true duals and didn't hang down too far below the body line if any at all.

-Jeff

PHOENIX · 03-25-2003, 02:46 PM

I really dont know for sure about the uses for exhuast. But I do know thats why Tom got the one off me, he ended up not using it if that helps at all.

*rage'nrat638* · 03-25-2003, 04:09 PM

this new tall block engine raises every thing up 1" and the stock non duel crossmember falls right in the center on on both sides,,
go figure....was thinking with the duel cross member..could do some welding to the bottom to raise it up a little to get both sides
to clear at the same time....will be doing my own exhaust... my use 4" pipe 850hp. 2-1/2" wont cut it. had the mock block in and every thing has changed even the hooker super comp. headers.o-boy----should be lots o fun (not)

PHOENIX · 03-25-2003, 07:09 PM

You have a point there. The crossmember Im talking about sits inside the frame on the lower lip. You could easily fabricate something or just install some spacers (lots easier

).

gldevall · 03-25-2003, 10:03 PM

Excuse my ignorance, but what exactly is a double hump cross member and what is so special about it. Remember the only dumb questions are the ones not asked.

*rage'nrat638* · 03-25-2003, 10:38 PM

on early model trucks pre emmisions they had double hump cross members for duel exhaust thus- double humpswith all the low riders and pro-steet trucks wanting cool exhaust or clearence
its a very valued item you got one??MARK

**swervin ervin** · 03-25-2003, 11:28 PM

Mark, if you have a welder, why not mod the one you have? You could cut out whats in the way and weld a piece back in. By what you are saying about it being 1" higher, I'm not sure the double hump will do you much good either. From the pics I've seen of these things, the humps are not drastic anyway. Although it might work, who knows until you try it.

*rage'nrat638* · 03-25-2003, 11:42 PM

yea ...i bought some 2x2 tube and6x8 square stock to make one
only about $40.00 thats going to be cheaper than buying a double hump..also...just trying to figure out how to make this think so i can get it out....the stock one utilizes the sides and bottom of the frame and top on one side.you know what i mean.
hate to make something that would bend the bottom of the frame rail.with this rage'n rat engine its going to have solid mounts so if theres a weak link its going to find it..i just wish some of you guys lived around here to just lay under there
and help me figure it out... nobody cares like we do...i really thank you for your intrest... should be posting pics. of new rat soon took some of the block build-up monday...MARK

**swervin ervin** · 03-25-2003, 11:53 PM

Quote:

Originally posted by marksdoor69
i just wish some of you guys lived around here to just lay under there and help me figure it out... nobody cares like we
do

Hey, I know the feeling. I don't have a dang sole around me who gives a rats petutty. It's not a lot of fun doing this stuff by yourself.

I'm jealous of all the Texas and Okie guys. Wish I had some truckin buddies to hang with.

Oh, I do, you guys.

*rage'nrat638* · 03-26-2003, 12:02 AM

yea at least they will help look at it while your driving around.
saying dude..thats sweeeeeet.

Low87 · 03-28-2003, 09:29 AM

This guy has one.
http://67-72chevytrucks.com/vboard/s...threadid=45419

03-25-2003, 08:53 AM	#1
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	where's all these double hump crossmembers??? willing to pay big money for one of these baby's have 85 c-10 swb keep eyes pealed.........need soon...... what trucks did they come on??????? Last edited by rage'nrat638; 03-25-2003 at 08:55 AM.

03-25-2003, 12:22 PM	#2
PHOENIX Registered User Join Date: Oct 2002 Location: Phoenix, Arizona Posts: 4,703	Mark, run a search and find the one I took pictures of for Tom. Tom SHOULD , be bringing the crossmember back to me soon, since he couldnt use it. Anyway if Tom ever gives it back Im gonna keep it because I think Ill need it some day soon. But if you look at those pictures and thats the kind you want let me know, I can check some yards out here next time Im out. I remember seeing some last time, I think. Ohh yeah I see them often on Suburbans. __________________ * AVOID: LOPER'S PERMORANCE / LOPERSPEED.COM OF PHOENIX, AZ & COTTMAN TRANSMISSION *

03-25-2003, 02:46 PM	#4
PHOENIX Registered User Join Date: Oct 2002 Location: Phoenix, Arizona Posts: 4,703	I really dont know for sure about the uses for exhuast. But I do know thats why Tom got the one off me, he ended up not using it if that helps at all. __________________ * AVOID: LOPER'S PERMORANCE / LOPERSPEED.COM OF PHOENIX, AZ & COTTMAN TRANSMISSION *

03-25-2003, 07:09 PM	#6
PHOENIX Registered User Join Date: Oct 2002 Location: Phoenix, Arizona Posts: 4,703	You have a point there. The crossmember Im talking about sits inside the frame on the lower lip. You could easily fabricate something or just install some spacers (lots easier ). __________________ * AVOID: LOPER'S PERMORANCE / LOPERSPEED.COM OF PHOENIX, AZ & COTTMAN TRANSMISSION *

03-25-2003, 10:03 PM	#7
gldevall Registered User Join Date: Mar 2003 Location: Walker, LA Posts: 2,925	Excuse my ignorance, but what exactly is a double hump cross member and what is so special about it. Remember the only dumb questions are the ones not asked. __________________ Gary -1986 SWB: lowered 4/6, SOLD!!! -Best 1/4 mile: 14.51 @ 91.01 MPH -2001 Pewter Tahoe, billet grill, Corsa Sport Cat-back, K&N FIPK SOLD!!! -2004 Z-71 Extended cab with a flowmaster, BDS 6.5", 3" BL, 35x12.5x18 Trail Grapplers on Pro-Comp 18x9 wheels

03-25-2003, 01:41 PM	#3
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	Why do you need one soo bad, to route dual exhaust? If that is the reason, it isn't a good one. Find a good exhaust shop...it can be done. My truck doesn't have one and neither did my last...both had true duals and didn't hang down too far below the body line if any at all. -Jeff

03-25-2003, 04:09 PM	#5
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	this new tall block engine raises every thing up 1" and the stock non duel crossmember falls right in the center on on both sides,, go figure....was thinking with the duel cross member..could do some welding to the bottom to raise it up a little to get both sides to clear at the same time....will be doing my own exhaust... my use 4" pipe 850hp. 2-1/2" wont cut it. had the mock block in and every thing has changed even the hooker super comp. headers.o-boy----should be lots o fun (not)

03-25-2003, 10:38 PM	#8
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	whats a double hump on early model trucks pre emmisions they had double hump cross members for duel exhaust thus- double humpswith all the low riders and pro-steet trucks wanting cool exhaust or clearence its a very valued item you got one??MARK

03-25-2003, 11:28 PM	#9
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	Mark, if you have a welder, why not mod the one you have? You could cut out whats in the way and weld a piece back in. By what you are saying about it being 1" higher, I'm not sure the double hump will do you much good either. From the pics I've seen of these things, the humps are not drastic anyway. Although it might work, who knows until you try it. __________________ Mike 1985 Chevy C-10

03-25-2003, 11:42 PM	#10
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	yea ...i bought some 2x2 tube and6x8 square stock to make one only about $40.00 thats going to be cheaper than buying a double hump..also...just trying to figure out how to make this think so i can get it out....the stock one utilizes the sides and bottom of the frame and top on one side.you know what i mean. hate to make something that would bend the bottom of the frame rail.with this rage'n rat engine its going to have solid mounts so if theres a weak link its going to find it..i just wish some of you guys lived around here to just lay under there and help me figure it out... nobody cares like we do...i really thank you for your intrest... should be posting pics. of new rat soon took some of the block build-up monday...MARK

03-26-2003, 12:02 AM	#12
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	yea at least they will help look at it while your driving around. saying dude..thats sweeeeeet.

03-28-2003, 09:29 AM	#13
Low87 been here longer than Liz Join Date: Feb 2000 Location: Broken Arrow, OK Posts: 2,437	This guy has one. http://67-72chevytrucks.com/vboard/s...threadid=45419 __________________ ~Greg~ Mac's Garage '87 SWB 6/8 drop "Piso" '08 CCSB Silverado DD the departed '89 GMC K5 Jimmy 4x4 "Rusty Nuts" '77 Chevy K5 Blazer 2wd '83 Chevy stepside "You get what you pay for" - Mike 'swervin ervin' Ervin



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.