im going to put a 700R in my 69 Camaro RS/SS. i have a turbo 350 in there right now.what cross member do i need for the 700R conversion? :confused:

This isn't the only option, and certainly not the least expensive. But probably the easiest!!

http://www.bowtieoverdrives.com/catalog/catalog.php?Action=GETSUBCAT&CATID=YA1A1
http://www.bowtieoverdrives.com/catalog/catalog_inc/viewitem.php?ITEMID=100

The crossmember that you have will work. Slide it back to where the front hole in it meets with the back hole in the subframe. I did this on my '68. I did trim the flattened out edge on the front for access to the pan.

Let me tell you a story. First, the car had a THM350 crossmember that someone hacked up. It only had two bolts holding it in. The motor provides over 400ft*lbs. Not too smart IMHO. Don't try to fudge fit a 350 cross-member.

I thought I'd be crafty (and cheap) and build my own. It turned out quite nice I must say. I spent hours grinding, cutting and welding only to find out I couldn't slide it into position. I firmly placed it on the ground. graemlins/angry.gif

I bought one of the bow-tie overdrive cross-members. You'll be hard pressed to find anything that fits and functions as good. Adequate clearance for exhaust. Wish I had listened to the guy that first mentioned "buy one from bow-tie overdrives". graemlins/clonk.gif

thanks for the info guys.
im assuming rons68 that you drilled 2 new holes so we have 4 bolts holding it in?

thanks for the heads up dnult, ill check the bowtie OD site BPOS, but im not sure that wil do me any good as i live in canada. i'll have to check out shipping etc.
anyone got any ideas where in canada i can get 1?

Yes, I drilled two additional holes. I used this transmission behind a stock '96 vortec 350 engine for about 2 to 3 years. I'm not trying to sway you, or argue with anyone else, but where can the crossmember go under the torque of the engine ? It's sandwiched between the floor and subframe.

Well, I can comment on a couple approaches. I've driven my 68 with a 700R4 for one summer and I simply slid my crossmember back and drilled additional holes for the new back bolts (front bolts went in the old back holes). I do have a vibration at about 70 mph that I'm not sure where it's coming from. I'm guessing that the tail of the transmission may be a little high and causing pinion angle problems. I'm going to start checking this out soon.

Now I'm also in the middle of swapping out a muncie from my father's 68 and replacing it with a 700. Due to my pinion angle concerns, we decided to scratch build a crossmember. To install it we made a plate for each side that bolts into the existing holes and extends out an inch and back 3-4". The crossmember bolts to the plates. It goes in and out easier than the stock piece!! Let me know if you're interested and I can give you details on what we did. Car hasn't hit the road yet, but it looks like it going to be perfect!!

Robb

Rob, could you post a pic and provide a little more detail?

Thanks

The Bow-tie overdrives piece sounds nice, but they charge you 2x what its worth. IMHO

Originally posted by Rons68:
Yes, I drilled two additional holes. I used this transmission behind a stock '96 vortec 350 engine for about 2 to 3 years. I'm not trying to sway you, or argue with anyone else, but where can the crossmember go under the torque of the engine ? It's sandwiched between the floor and subframe. I just did this earlier today playing around with a LT1 and 4L60. It seems too good to be true???

I will snap a few pics and post them to my website letter.

I don't see where the trans would go up or down unless the mounting pad on the OD unit is higher/lower than the T350. I will have to measure that and see.