Crossmember question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

oldsmobilekindofguy · 06-22-2008, 03:07 PM

I cut the crossmember in order to get my engine and tranny in, I have a 350 connected to a SM465 tranny I got it all in place and can be bolted in, but my only concern is the crossmember being strong enough. I took some pics to clarify things, I think it should be fine.

caminokid · 06-22-2008, 03:10 PM

I think you better weld the middle back to it. I dont know if it being in two pieces that it will hold up.

oldsmobilekindofguy · 06-22-2008, 03:11 PM

I would like to leave it as is so I can take the motor in and out with ease, so I would rather not brace it across again but I could make braces from the frame to the existing crossmember, that is if it needs to be braced?

caminokid · 06-22-2008, 03:15 PM

Quote:

Originally Posted by oldsmobilekindofguy

I would like to leave it as is so I can take the motor in and out with ease, so I would rather not brace it across again but I could make braces from the frame to the existing crossmember, that is if it needs to be braced?

That would be a good idea too. I have my crossmember ready for bolts so I can take the whole thing out.

oldsmobilekindofguy · 06-22-2008, 03:21 PM

thanks kid, any other input would be appreciated

old Chevy guy · 06-22-2008, 03:21 PM

Id worry there would be a lot of streess on the mounts,seems like those loose ends would want to twist up and down when the motor trys to twist.Mabey you could weld a flat plate on the bottem of each side of the piece you cut out ,then drill holes in the parts atached to the frame and bolt it in so you could remove it again if thats what you want.

oldsmobilekindofguy · 06-22-2008, 10:47 PM

thanks guy but if I do that there is clearance issues, even if I make it so I can unbolt the middle with the middle in there I can't get the dust cover on for ythe flywheel

oldsmobilekindofguy · 06-22-2008, 10:52 PM

Does anyone have an idea of how I could brace up the two existing pieces so I don't have to put the middle back in

I kinda mutilated the piece in the middle by cutting it in three pieces anyway

old Chevy guy · 06-22-2008, 11:19 PM

465 sm isnt that the big truck unit with the granny 1st? If so why is there a problem thats whats in my truck. What bell are you using,the one that bolts on the crossmember?How about just a flat plate across the bottom to tie it together will that still create a clearance problem?

oldsmobilekindofguy · 06-26-2008, 09:18 PM

yes it is, and it does just bolt to the belhousing but It isn't original to the truck and I am trying to use the existing crossmember, It is also a low hump cab which created problems too, It was originally a three speed.

I decided to do pretty much your idea anyway, I am gonna weld plates down a couple inches and and bolt the middle across

Sammy · 06-26-2008, 10:17 PM

Never seen a granny 4 spd in without a high hump cover. I doubt because of clearance issues that tranny would require a huge hole in the floor pan.

oldsmobilekindofguy · 06-26-2008, 11:08 PM

you can see where the floor is cut out and it has to be cut out there that is not my problem, I am making the crossmember so I can pull the motor and trany in and out in one piece and I didn't want to put the middle back in but everyone on here and everyone I have talked to think I should so I am

oldsmobilekindofguy · 06-26-2008, 11:08 PM

Thanks all for the input and help

06-22-2008, 03:07 PM	#1
oldsmobilekindofguy Registered User Join Date: Aug 2007 Location: Stratford,SD Posts: 296	Crossmember question I cut the crossmember in order to get my engine and tranny in, I have a 350 connected to a SM465 tranny I got it all in place and can be bolted in, but my only concern is the crossmember being strong enough. I took some pics to clarify things, I think it should be fine. Attached Images __________________ 1967 c-10 longbox project, check it out in projects 1969 c-10 parts pickup, twisted frame Daily driver- 1970 Olds delta 88, 2dr., 455, gotta love the big block

06-22-2008, 03:10 PM	#2
caminokid Chevy nut Join Date: Jun 2007 Location: Springfield, Illinois Posts: 2,266	Re: Crossmember question I think you better weld the middle back to it. I dont know if it being in two pieces that it will hold up. __________________ 84 Chevy Custom Deluxe 1/2 Ton Named Fade To Black II "Remember kids there is NO replacement for displacement!"

06-22-2008, 03:11 PM	#3
oldsmobilekindofguy Registered User Join Date: Aug 2007 Location: Stratford,SD Posts: 296	Re: Crossmember question I would like to leave it as is so I can take the motor in and out with ease, so I would rather not brace it across again but I could make braces from the frame to the existing crossmember, that is if it needs to be braced? __________________ 1967 c-10 longbox project, check it out in projects 1969 c-10 parts pickup, twisted frame Daily driver- 1970 Olds delta 88, 2dr., 455, gotta love the big block

06-22-2008, 03:21 PM	#5
oldsmobilekindofguy Registered User Join Date: Aug 2007 Location: Stratford,SD Posts: 296	Re: Crossmember question thanks kid, any other input would be appreciated __________________ 1967 c-10 longbox project, check it out in projects 1969 c-10 parts pickup, twisted frame Daily driver- 1970 Olds delta 88, 2dr., 455, gotta love the big block

06-22-2008, 03:21 PM	#6
old Chevy guy Registered User Join Date: Apr 2007 Location: Foster Rhode Island Posts: 1,176	Re: Crossmember question Id worry there would be a lot of streess on the mounts,seems like those loose ends would want to twist up and down when the motor trys to twist.Mabey you could weld a flat plate on the bottem of each side of the piece you cut out ,then drill holes in the parts atached to the frame and bolt it in so you could remove it again if thats what you want.

06-22-2008, 10:47 PM	#7
oldsmobilekindofguy Registered User Join Date: Aug 2007 Location: Stratford,SD Posts: 296	Re: Crossmember question thanks guy but if I do that there is clearance issues, even if I make it so I can unbolt the middle with the middle in there I can't get the dust cover on for ythe flywheel __________________ 1967 c-10 longbox project, check it out in projects 1969 c-10 parts pickup, twisted frame Daily driver- 1970 Olds delta 88, 2dr., 455, gotta love the big block

06-22-2008, 10:52 PM	#8
oldsmobilekindofguy Registered User Join Date: Aug 2007 Location: Stratford,SD Posts: 296	Re: Crossmember question Does anyone have an idea of how I could brace up the two existing pieces so I don't have to put the middle back in I kinda mutilated the piece in the middle by cutting it in three pieces anyway __________________ 1967 c-10 longbox project, check it out in projects 1969 c-10 parts pickup, twisted frame Daily driver- 1970 Olds delta 88, 2dr., 455, gotta love the big block

06-22-2008, 11:19 PM	#9
old Chevy guy Registered User Join Date: Apr 2007 Location: Foster Rhode Island Posts: 1,176	Re: Crossmember question 465 sm isnt that the big truck unit with the granny 1st? If so why is there a problem thats whats in my truck. What bell are you using,the one that bolts on the crossmember?How about just a flat plate across the bottom to tie it together will that still create a clearance problem?

06-26-2008, 09:18 PM	#10
oldsmobilekindofguy Registered User Join Date: Aug 2007 Location: Stratford,SD Posts: 296	Re: Crossmember question yes it is, and it does just bolt to the belhousing but It isn't original to the truck and I am trying to use the existing crossmember, It is also a low hump cab which created problems too, It was originally a three speed. I decided to do pretty much your idea anyway, I am gonna weld plates down a couple inches and and bolt the middle across __________________ 1967 c-10 longbox project, check it out in projects 1969 c-10 parts pickup, twisted frame Daily driver- 1970 Olds delta 88, 2dr., 455, gotta love the big block Last edited by oldsmobilekindofguy; 06-26-2008 at 09:19 PM.

06-26-2008, 10:17 PM	#11
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: Crossmember question Never seen a granny 4 spd in without a high hump cover. I doubt because of clearance issues that tranny would require a huge hole in the floor pan. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

06-26-2008, 11:08 PM	#12
oldsmobilekindofguy Registered User Join Date: Aug 2007 Location: Stratford,SD Posts: 296	Re: Crossmember question you can see where the floor is cut out and it has to be cut out there that is not my problem, I am making the crossmember so I can pull the motor and trany in and out in one piece and I didn't want to put the middle back in but everyone on here and everyone I have talked to think I should so I am __________________ 1967 c-10 longbox project, check it out in projects 1969 c-10 parts pickup, twisted frame Daily driver- 1970 Olds delta 88, 2dr., 455, gotta love the big block

06-26-2008, 11:08 PM	#13
oldsmobilekindofguy Registered User Join Date: Aug 2007 Location: Stratford,SD Posts: 296	Re: Crossmember question Thanks all for the input and help __________________ 1967 c-10 longbox project, check it out in projects 1969 c-10 parts pickup, twisted frame Daily driver- 1970 Olds delta 88, 2dr., 455, gotta love the big block Last edited by oldsmobilekindofguy; 06-26-2008 at 11:09 PM.



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