1969 Mustang Supersite Web Forums 1969 Mustang Supersite Web Forums


Go Back   1969 Mustang Supersite Web Forums > Technical, General Discussion, and Project Progress > 1969-70 Technical Forum

Reply
 
Thread Tools Display Modes
Old 05-24-2010, 10:42 PM   #1
buening
v8 powered poster
 
Join Date: Jun 2005
Location: Decatur, IL
Posts: 1,883
buening is on a distinguished road
Default The T56 conversion into a 70 Mach 1

Well it's been awhile in the making and I'm setting some time aside to create a thread on this, as I'll likely need tips as I proceed. The car is a 70 Mach with a 351w and an FMX trans that leaked out of every crevice possible. Below is a parts list, prices paid, and some pictures of those parts. I set out try and save money where I could in order to get a few more comforts like hydraulics. My goals for this project are to minimize the changes to the car that can't be reversed easily, such as hacking up the trans tunnel to fit the beast in there. My wife is due August 15th with our first child, so I'll be hauling balls trying to get this conversion complete.

Parts List thus far:

2004 Cobra T-56 used with 29k miles - $900
Quicktime RM-8031 Bellhousing new - $350 from Corral.net group buy
Spec Stage II SF482 kevlar clutch and pressure plate -- Slightly used (one run on dyno) -- $190 from Corral.net classifieds
Spec SF05A billet aluminum flywheel (yes I know DD negatives with lightweight flywheels) -- New in box -- $250 from Corral.net classifieds
Pro 5.0 billet shifter with Steeda Tri-Ax shifter -- Slightly used -- $75 from SVTPerformance.com classifieds
Hurst white 6spd shifter ball - $30
Cobra slip yoke used - $50
Dynotech 46.5" x 4" x 0.065" steel driveshaft used from NASCAR - $38 shipped
Mustang original clutch pedal assembly - $170 shipped
MustangSteve roller bearing kit - $40
ModernDriveline LF Master Cylinder kit - $235
McLeod 1400-30 Hydraulic Throwout bearing with sleeve - $359
24" stainless hydraulic line - $39
3"x1"x1/8" rectangular tubing 4' long for the custom trans crossmember - $30
Custom motor mounts - roughly $50 See build thread here: http://www.stangfix.com/testforum/in...ic,6383.0.html


Pictures:




























Thats all for the parts list. I'm up to about $2900 for everything including miscellaneous ARP bolts and other hardware.
__________________
1970 Grabber Blue Mach T56
1970 Rusty Fastback
06 BMW 530xi
05 F150 FX4

T-56 Conversion
Custom Motor Mount Build
DIY Eccentric Eliminators
buening is offline   Reply With Quote
Old 05-24-2010, 10:42 PM   #2
buening
v8 powered poster
 
Join Date: Jun 2005
Location: Decatur, IL
Posts: 1,883
buening is on a distinguished road
Default

With the FMX, exhaust, headers, steering linkage, brake booster and M/C, tires removed, and car on jack stands and fully level in all directions, I am ready to bolt up the bellhousing and transmission and jack it into the tunnel. With the stock motor mounts still in place, I am getting a little over 6 at the tailshaft of the T56. The inspection cover on top of the trans is touching the trans tunnel support when this angle was measured. With the rear axle supported so that the suspension is fully loaded, I am amazingly getting 0. This means that you would end up with 6 driveline angle with stock motor mounts and the trans touching the tunnel. You will definitely need drop motor mounts or hack up the trans tunnel with this transmission. Also, note the picture below that shows the location of the shifter and the shifter opening. Sliding the motor back will better align the shifter in the opening.



__________________
1970 Grabber Blue Mach T56
1970 Rusty Fastback
06 BMW 530xi
05 F150 FX4

T-56 Conversion
Custom Motor Mount Build
DIY Eccentric Eliminators
buening is offline   Reply With Quote
Old 05-24-2010, 10:43 PM   #3
buening
v8 powered poster
 
Join Date: Jun 2005
Location: Decatur, IL
Posts: 1,883
buening is on a distinguished road
Default

I have since removed the stock motor mounts and installed the custom motor mounts. With the stock mounts in place, I was measuring 24" from the concrete to the oil pan bolt head nearest the mounts. I am now measuring exactly 23", so all of my measuring and drawings indeed created a full 1" drop. Sliding the motor back was a royal PIA! I thought I'd be smart and grease up the motor plates so that I could just jack up the tail of the trans and slide it all back. WRONG! I had to jack up the motor as well so that the entire motor and trans floated on two jacks, in which then I slide the motor back. A cherry picker would have accomplished the same, but I don't have one of those and this worked just as well. Initially I had planned on sliding the motor back a full 1.5". Why?? A few reasons. With the deal I got on the $40 driveshaft, it was 1.5" too short with the motor in the stock location and getting 0.75" slip yoke play. It would also give me more clearance for a better radiator fan.

One would think that 1.5" doesn't seem like much, but when you are moving an engine back that far it seems everything gets in the way. To start out, my car has the factory A/C. This means that the heater core tubes are close to the head and one is actually behind the head.



Another clearance issue was the power steering pump hard line that comes out the back of the pump. The further you move the engine back, the closer the oil filter gets to the shock tower. Fortunately I didn't go to that extremes but if it were a problem an oil filter relocation kit would have fixed that. I need to flip that motor mount bolt so the nut doesn't touch the filter.



Finally, one that I had not expected was the sway bar. When the wheels are suspended off the ground, the sway bar touches the crank pulley. This is the 3 sheeve pulley, so one may not run into problems with a different setup. On the ground there is plenty of clearance, but I need to consider it could cause issues if I ever go over a hill too fast and get the wheels close to coming off the ground. An aftermarket sway bar may alleviate this issue, or it could make things worse. With all factors considered, I was able to move the engine back 1.25".

Clearances check at the steering center link, steering ram, and idler arm. I will have to dimple the header for the steering box, which was dented previously for that reason but moving it back means I need to create a new dent. Exhaust clearance at the trans tunnel support is fine When I had the exhaust installed, the collector reducers were touching the tunnel support so we had to dent the reducers as can be seen in the pic.















With everything slid back, I then installed the steering linkage and exhaust to check for clearance issues with those. With this drastic of changes ya never know!
__________________
1970 Grabber Blue Mach T56
1970 Rusty Fastback
06 BMW 530xi
05 F150 FX4

T-56 Conversion
Custom Motor Mount Build
DIY Eccentric Eliminators
buening is offline   Reply With Quote
Old 05-24-2010, 10:44 PM   #4
buening
v8 powered poster
 
Join Date: Jun 2005
Location: Decatur, IL
Posts: 1,883
buening is on a distinguished road
Default

Next up is the transmission crossmember. For what it's worth, I found out that the stock FMX (and other Ford trans) rubber isolator bolts up perfectly to the T56! This will make things much easier in terms of an isolator.

From another thread on here, I was asking about any aftermarket other than Lokar parking brake cable kits. As you can see, the cable end is right in the way of the xmember as well as the cable is touching the tailshaft of the trans



Early version of the xmember:



I removed the drivers side bracket for the parking brake cable and have the wooden Xmember in place. I decided against the above picture setup with a plate welded to the bottom of the 3x1 due to the X-pipe converging at this location. I'll have to open up the bottom of the 3x1 so that I can put nuts on the isolator bracket, since the bolts aren't long enough to go through the 3x1.

I'm taking these pictures on my back, so bear with me on the angles











I have about 1/4" or slightly more clearance from the exhaust to the Xmember. Hopefully that ends up being enough.
__________________
1970 Grabber Blue Mach T56
1970 Rusty Fastback
06 BMW 530xi
05 F150 FX4

T-56 Conversion
Custom Motor Mount Build
DIY Eccentric Eliminators
buening is offline   Reply With Quote
Old 05-24-2010, 10:45 PM   #5
buening
v8 powered poster
 
Join Date: Jun 2005
Location: Decatur, IL
Posts: 1,883
buening is on a distinguished road
Default

While messing around with the Xmember, I happen to notice that the transmission was not level (side to side). This concerned me, since I had custom motor mounts and thought I had it all correct. So I bust out my tape measure and start taking measurements. At the front left corner of the oil pan, I measure 22 7/8". At the front right corner I measure 22 13/16". Within 1/16" which could be measuring errors, so call it good. I go to the rear left corner of the oil pan and measure 22 1/8". At the rear right corner I measure 22 3/16". Again, within a 1/16" so the motor is level at the front and rear. A quick check with a level on the oil pan confirms this. At the flange of the bellhousing where the trans attaches is where it gets whacky. On the right side bottom of the flange I measure 15 1/2". On the left side I get 15 3/16". That is over 1/4" difference in about 5" of length. if this were the width of the oil pan it'd probably be well over 1". Pictures are below.














As you can see with the picture of the level, its way out of whack. The other two pictures make it harder to tell but it's obvious under the car. I sent an email to Quicktime asking them what could be the issue. It really isn't cause me any problems yet, it just looks goofy. The crossmember center section wouldn't end up being level either. This bugs the crap out of me. Anyone have any suggestions??? I'm pretty much stuck up to this point
__________________
1970 Grabber Blue Mach T56
1970 Rusty Fastback
06 BMW 530xi
05 F150 FX4

T-56 Conversion
Custom Motor Mount Build
DIY Eccentric Eliminators
buening is offline   Reply With Quote
Old 05-24-2010, 10:57 PM   #6
buening
v8 powered poster
 
Join Date: Jun 2005
Location: Decatur, IL
Posts: 1,883
buening is on a distinguished road
Default

Well I heard back from Quicktime already!!! Below is their response:

All T56's are clocked 5 degrees counter clockwise for the fork to work in the OEM cars.

So, it appears that I was worried about nothing as they are that way from the factory apparently.
__________________
1970 Grabber Blue Mach T56
1970 Rusty Fastback
06 BMW 530xi
05 F150 FX4

T-56 Conversion
Custom Motor Mount Build
DIY Eccentric Eliminators
buening is offline   Reply With Quote
Old 05-24-2010, 11:36 PM   #7
Silver_69_Coupe
v8 powered poster
 
Silver_69_Coupe's Avatar
 
Join Date: Dec 2008
Posts: 215
Silver_69_Coupe is on a distinguished road
Default

I am running into the same issue with the T5 I am putting into my 69. I found that is I use a Fox body bell housing it sits level but if I use a SN 95 Bell housing it sets it off a little. So I would be that the difference is the same with T5's that go in the SN95 Cars. I don't think it will hurt anything it just looks wrong from underneath.
__________________
My 69 Project on 69Stang.
Silver_69_Coupe is offline   Reply With Quote
Old 05-25-2010, 08:11 AM   #8
buening
v8 powered poster
 
Join Date: Jun 2005
Location: Decatur, IL
Posts: 1,883
buening is on a distinguished road
Default

Yeah someone on another forum said the same thing about the T5. They were using the stock aluminum bell, not sure of the year though. Why wouldn't they have clocked the bellhousing correctly rather than clocking the entire transmission to work? Strange.
__________________
1970 Grabber Blue Mach T56
1970 Rusty Fastback
06 BMW 530xi
05 F150 FX4

T-56 Conversion
Custom Motor Mount Build
DIY Eccentric Eliminators
buening is offline   Reply With Quote
Old 05-25-2010, 10:32 PM   #9
buening
v8 powered poster
 
Join Date: Jun 2005
Location: Decatur, IL
Posts: 1,883
buening is on a distinguished road
Default

Now that the indexed bellhousing/transmission issue is settled, its time for some trans crossmember fabrication. Using my extremely precise wood template as shown in previous pics, I took measurements from those pieces as well as the inside distance from frame rail to frame rail and headed off to draw it up on AutoCAD. I'm a tech geek and do drafting at work sometimes, so it's a bit second nature. Below are screen images of the crossmember drawn up and dimensioned, as well as a detail for the diagonal pieces in order to cut them out correctly. All other pieces are self explanatory when cutting.




__________________
1970 Grabber Blue Mach T56
1970 Rusty Fastback
06 BMW 530xi
05 F150 FX4

T-56 Conversion
Custom Motor Mount Build
DIY Eccentric Eliminators
buening is offline   Reply With Quote
Old 05-25-2010, 11:59 PM   #10
Silver_69_Coupe
v8 powered poster
 
Silver_69_Coupe's Avatar
 
Join Date: Dec 2008
Posts: 215
Silver_69_Coupe is on a distinguished road
Default

This is sweet... You have one for a T5? What are you using for headers? The Headmans that I have run into the clutch cable and bell housing.
__________________
My 69 Project on 69Stang.
Silver_69_Coupe is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 04:23 PM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.