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#1 |
MOTORHEAD!
Join Date: May 2000
Location: Devon AB, Canada
Posts: 849
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transmission crossmember?
Does anybody make an aftermarket one for a 81-87 application?
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82 GMC High Sierra VortecPro 496 12 Bolt, 3.42's AFR 265 Holley 850 Performer RPM Air Gap Hooker 2455's TCI Turbo 400 Super Street Fighter TRRC 12 Bolt Eaton Posi Mark Williams Axles Cal-Tracs Hoosier 30x10.5 Radial Slick Full weight long box pickup Current best- 11.33@117mph |
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#2 |
Registered User
Join Date: May 2010
Location: Rochester NY
Posts: 831
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Re: transmission crossmember?
Yours rotted out?
I have seen some aftermarket crossmembers on websites that sell suspension parts. Cant remember where. I'll look
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1973 k20 Suburban 350 1974 Custom stepside c-10 250 1975 Chevy stepside 454 1986 K30 Crewcab SRW 350 R.I.P- glimmertwin01- board member and good friend, you will be missed |
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#3 |
Registered User
Join Date: Jul 2010
Location: San Diego, CA
Posts: 281
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Re: transmission crossmember?
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#4 |
MOTORHEAD!
Join Date: May 2000
Location: Devon AB, Canada
Posts: 849
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Re: transmission crossmember?
Not rotted out, but a pain in the butt for doing 3" exhaust... The one above looks like it will solve my problem. Thanks for the link!
Posted via Mobile Device
__________________
82 GMC High Sierra VortecPro 496 12 Bolt, 3.42's AFR 265 Holley 850 Performer RPM Air Gap Hooker 2455's TCI Turbo 400 Super Street Fighter TRRC 12 Bolt Eaton Posi Mark Williams Axles Cal-Tracs Hoosier 30x10.5 Radial Slick Full weight long box pickup Current best- 11.33@117mph |
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#5 |
Registered User
Join Date: Apr 2010
Location: Newcastle, OK
Posts: 1,344
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Re: transmission crossmember?
I have that one and there is plenty of exhaust clearance above it.
![]() By claypool782 at 2011-06-06 ![]() By claypool782 at 2011-09-01 |
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#6 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,966
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Re: transmission crossmember?
I like the ones built by Early Classic Enterprises & Perf Online because they capture both the top & bottom of the frame rail like a factory unit does to limit frame flex. The universal tubular units will support the trans fine, but they don't help strengthen the frame....
http://www.earlyclassic.com/catalog.aspx http://www.performanceonline.com/196...MEMBER-TCM6372
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#7 |
Registered User
Join Date: Jun 2011
Location: Baytown TX
Posts: 2,219
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Re: transmission crossmember?
Factory 73-76 crossmembers dont dip low on the drivers side, they are semetrical and a mirror image of the right side of your current cross member.
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John 82 Chevy Silverado 350ci/TH350 ![]() |
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#8 |
Registered User
Join Date: Aug 2011
Location: Union Beach, NJ
Posts: 3
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Re: transmission crossmember?
Does anyone make one for an 81-87 manual trans? I'm having the same problem you are and can not fit the exhaust I have.
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#9 |
Registered User
Join Date: Feb 2007
Location: Austin, TX
Posts: 3,930
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Re: transmission crossmember?
They still had them beyond that time on anything that didn't have to have a catalytic converter on it, which is heavy duty half tons and up. I'm not sure when or if the emissions laws started to tighten up but I know trucks with higher GVWR's didn't need them.
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1977 GMC Sierra Grande |
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#10 | |
Registered User
Join Date: Jun 2011
Location: Baytown TX
Posts: 2,219
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Re: transmission crossmember?
Quote:
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John 82 Chevy Silverado 350ci/TH350 ![]() |
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#11 |
Registered User
![]() Join Date: Oct 2008
Location: Montpelier, VA
Posts: 315
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Re: transmission crossmember?
I was just installing my crossmember on my 73 Jimmy yesterday and thought I'd add my 2 cents worth. I have the early symmetrical style but the truck was missing the uprights when I bought it.
-You can pull the high side uprights from the later year trucks and flip them to fit either side of the early x-member. -If the bolts aren't already installed on the upper side of the frame you may have to lift the body to drop them in or find short bolts and install from below. -The uprights eliminate a lot of flex. I had to move my jackstands around a few times to get the holes to line up. Of course mine is a convertible so there is a little more flex than normal. -The x-member can be rotated 180* horizontally on the trans mount axis to achieve a slight difference in trans mount points. The frame mount holes on the x-member are drilled a little off center from the trans mount holes. On mine, when I put the side of the x-member with the part # stamping towards the back it moved the trans mount hole about 1/2" towards the front vs. the other way. |
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#12 |
Registered User
![]() Join Date: Apr 2011
Location: Hartford CT
Posts: 223
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Re: transmission crossmember?
I'm on the hunt for a new crossmember for my 5.3/4L60E swap, and I like the Early Classic/Perf. Online setup with the frame bracket setup, but it says they're for 67-72's - will it still fit on 73-87?
I'd re-use my crossmember, but it doesn't have the dual frame support brackets - it only has the brackets on the right and then it slings under the frame and bolts up on the outside of the frame rails - probably because it was an '80 emissions-equipped 1/2 ton
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-Steve ![]() 1980 GMC C15 Sierra LWB Dark Carmine Red/Carmine Int Was: 250/3spd (1980-88), then a 305/TH350 (1988-2011) Now: 5.3/4L60E, 2.73 12-bolt open rear |
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#13 | |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,966
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Re: transmission crossmember?
Quote:
I used one of these for my CC dually w/a 454/th400 combo after slightly modifying it for the taller rails & making a new mounting pad.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#14 |
Registered User
Join Date: Aug 2010
Location: North Wales, PA
Posts: 82
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Re: transmission crossmember?
The Thorbecke Bro's one is awesome, I have one too
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#15 |
Registered User
Join Date: May 2011
Location: Fort Worth, Texas
Posts: 468
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Re: transmission crossmember?
Thanks Scoti, for the recommendation and link for a crossmember you gave back in September. I just ordered one.
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#16 |
Registered User
Join Date: Jul 2010
Location: Norman, Oklahoma
Posts: 557
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Re: transmission crossmember?
Why do you think the ECE crossmember costs $20 more than the performance online crossmember?
Posted via Mobile Device
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Max Max's bagged 81 81 rcsb bagged, 22s, build in progress 09 ext cab, 24" U2's, DD sub/amp |
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#17 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: transmission crossmember?
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#18 |
Registered User
Join Date: Jul 2010
Location: Norman, Oklahoma
Posts: 557
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Re: transmission crossmember?
Does that hang below the frame?
Posted via Mobile Device
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Max Max's bagged 81 81 rcsb bagged, 22s, build in progress 09 ext cab, 24" U2's, DD sub/amp |
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#19 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: transmission crossmember?
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#20 |
Registered User
Join Date: Dec 2011
Location: Blyth, Ontario, Canada
Posts: 187
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Re: transmission crossmember?
What do you guys think of this unit that i have fab'd up , fully boxed the frame woth some channel i had made at a local welding shop , i did so because i found it will make for easyer removal later on. Hope ot works !
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1986 LWB c10 w/327 & vortec heads ![]() Last edited by i heart square bodys; 09-14-2014 at 01:59 AM. Reason: spelling |
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#21 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,966
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Re: transmission crossmember?
Looks good to go.
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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