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11-26-2009, 11:50 PM
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#1 |
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Registered User
Join Date: Feb 2009
Location: escondido,ca
Posts: 94
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crossmember
i was looking at my crossmember in my 78 and im getting ready to put a 700r in the truck along with a 5.7 out of a 89 1500. the crossmember in the 89 just goes straight across to the other frame rail and the 78 crossmember has a low side and a high side. will the 78 crossmember work ? thanks steve
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11-27-2009, 12:06 AM
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#2 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,310
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Re: crossmember
If im wrong i will be corrected..but i believe that all you have to do is move the location depending on the length of the trans... the motor will sit in the existing mounts fine
__________________
Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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11-27-2009, 12:20 AM
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#3 |
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Registered User
Join Date: Feb 2009
Location: escondido,ca
Posts: 94
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Re: crossmember
the transmission crossmember just looks so much differant than the one in the 89
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11-27-2009, 01:08 AM
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#4 |
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Registered User
Join Date: Jul 2006
Location: Alabama
Posts: 661
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Re: crossmember
On my 86 when I put a 700r4 in just slid original crossmember back and drilled a 2 new holes and used 2 original holes I believe.
Last edited by HOGDADDY; 11-27-2009 at 01:09 AM. |
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11-27-2009, 08:12 AM
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#5 | |
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Registered User
Join Date: Oct 2009
Location: Waterboro ,MAINE
Posts: 547
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Re: crossmember
Quote:
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11-27-2009, 08:31 AM
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#6 |
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Old Heap Driver
Join Date: Mar 2008
Location: Newport News, Va
Posts: 2,642
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Re: crossmember
I used a X-Member from a 70 C-10 for my 700R-454 conversion. BUT, my truck had a 250-6 and a 3 speed.
I could be wrong, but I think the high low sides on yours are for exhaust clearance.
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_____________________________ Bryan '99 Silverado 1500, 4.3, 5-speed, reg cab, short bed '50 Chevy 2DR Hard Top, 350/350, M2 Front End, 3:08 gear, cruiser. '40 F**d Sedan, all Chevy power, Heidt's front end, TCI rear, nice driver. |
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11-27-2009, 12:46 PM
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#7 |
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Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: crossmember
either will work, but I would use the one from the '89, I don't like the over/under cross-member.
EDIT: I just realized the 89 is the different body style. I believe the frame is wider on those....just stick with the crossmember in the '78 unless you feel like modifying the '89
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Last edited by joe231; 11-27-2009 at 12:48 PM. |
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