700r4 Install (crossmember ?) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

canso · 02-28-2003, 07:29 PM

I have the crossmember moved to where it has to be. None of the bolt holes line up, I am wondering how guys are drilling the holes in the frame for the top mounting holes. I wish I would have done this when the cab was off. Thanks

cdowns · 02-28-2003, 09:20 PM

meybe if you elongate the 2 tranny bolt holes you'll be able to use the stock crossmember holes

Gordo · 02-28-2003, 09:24 PM

I used a right-angle drill from the bottom up.

jays68yak · 02-28-2003, 09:34 PM

I didnt! Just used the bottom four. It aint gonna go no where.

Eddie H. · 02-28-2003, 11:13 PM

When converting from a TH 350 to a 700R4, I didn't have to drill any new holes in the frame.
The way I did it was to move the crossmember as far forward as possible while still using the existing holes in the frame.

I then made a simple rectangle shaped bracket out of 1/4" flat steel plate
approximately 4"X6" with 4 holes drilled in it to allow the trans mount to bolt to the bracket and the bracket to bolt to the crossmember. It's simple and works perfectly.

02-28-2003, 07:29 PM	#1
canso Registered User Join Date: Jun 2001 Posts: 92	700r4 Install (crossmember ?) I have the crossmember moved to where it has to be. None of the bolt holes line up, I am wondering how guys are drilling the holes in the frame for the top mounting holes. I wish I would have done this when the cab was off. Thanks

02-28-2003, 09:20 PM	#2
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	meybe if you elongate the 2 tranny bolt holes you'll be able to use the stock crossmember holes __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

02-28-2003, 09:24 PM	#3
Gordo Registered User Join Date: Jan 2001 Location: Killingworth, CT. USA Posts: 3,378	I used a right-angle drill from the bottom up. __________________ 1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03) 1998 S10 short bed 2002 S10 Blazer 1942 Oldsmobile 1958 Massey Harris Pony 1951 Wife Killingworth, Connecticut May those who love us, love us, any of those who do not love us, may God turn their hearts. And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping. A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist.

02-28-2003, 09:34 PM	#4
jays68yak Registered User Join Date: Oct 2002 Location: Gilroy, CA Posts: 1,454	I didnt! Just used the bottom four. It aint gonna go no where. __________________ 1969 Chevy Project SWB Fleet, 20s, 5.3, t56, in the weeds. 1970 Chevy Truck cab on a 1979 Jimmy frame-8.1 liter 496 bbc/sm465/np203-jeds doubler-np205/d60/14bff Welded/42 tsls on recentered H1s 1998 Chevy Crew Cab K3500 SAS'd with hpd60, links and swayaway coilovers. 8.1l vortec DD/towrig "I like long walks, especially when they are taken by people who annoy me. "

02-28-2003, 11:13 PM	#5
Eddie H. Registered User Join Date: Mar 2001 Location: Paradise TX USA Posts: 1,200	When converting from a TH 350 to a 700R4, I didn't have to drill any new holes in the frame. The way I did it was to move the crossmember as far forward as possible while still using the existing holes in the frame. I then made a simple rectangle shaped bracket out of 1/4" flat steel plate approximately 4"X6" with 4 holes drilled in it to allow the trans mount to bolt to the bracket and the bracket to bolt to the crossmember. It's simple and works perfectly. __________________ "Negative people always seem to have a problem for every solution"



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.