Re: Gear Vendors installation problem
[Re: Kern Dog]
#1187030
02/27/12 07:46 AM
02/27/12 07:46 AM
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Joined: Aug 2007
Posts: 1,513 AZ
Mike P
pro stock
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pro stock
Joined: Aug 2007
Posts: 1,513
AZ
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If the motor and transmission was properly installed in the first place (which I assume it was) then that is where it needs to be when you are done. Otherwise you will create a host of new issues such as improper drive line angle and interference problems.
1957 Plymouth (Hemi, Dual Quads, A833 4 Speed 9 1/4 w 4.10) Sold 1937 Dodge Pickup (Hemi, 6X2 intake, 46RH, Dana 60 w 4.56) Sold 1968 Plymouth Valiant 2dr sedan (354 HEMI, 46RH w/4.30 gears) under construction
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Re: Gear Vendors installation problem
[Re: Kern Dog]
#1187031
02/27/12 12:06 PM
02/27/12 12:06 PM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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I've done both GV swaps Auto and manual in B bodies using the earlier GV's,...in order to maintain proper driveline phasing, I needed to modify the factory transmission mount in both cases, although your attempting to position the engine/transmission driveline in the factory position, the shortened driveshaft will have a new increased angle, best to have the shaft made up, put everything together, then rephase the driveline, you may need to use perch shims to angle the pinion down, or lower the driveline angle a few degrees, with your car being lowered, it might help in that area, you want the engine/tranny centerline running parallel with the pinion centerline, in other words the tranny tail end pointing downward, and the front of the pinion pointing upward, but yet both on the same parallel angle to each other, the shaft should be no more 2 degrees opposite this parallel relationship of the engine and tranny,....get an inclination meter from a local machine shop supplier, no guessing
mike
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Re: Gear Vendors installation problem
[Re: Dabee]
#1187033
02/27/12 02:13 PM
02/27/12 02:13 PM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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Quote:
Here is another suggestion, not related to your current problem. The GV controller kept randomly dropping the GV out of overdrive under cruse conditions.
Experienced the same thing with 3 different GV installs, not a random experience,...GV has since updated the control modules, earlier units produced before 2005 have "defective" control units.....nothing like dropping out of OD unexpectantly at 100MPH+ with 4:10's.....leaves in your shorts
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Re: Gear Vendors installation problem
[Re: DAYCLONA]
#1187034
02/27/12 02:32 PM
02/27/12 02:32 PM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
OP
Striving for excellence
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OP
Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Great info, Thanks! Regarding the positioning: The old trans mount was a factory rubber unit, and it was thrashed! It came out in several pieces. The trans yoke end was/is closer to the right side of center than the left, so for some time, the driveshaft has been working out of phase. It even had scuff marks where it had rubbed the rh muffler. Zero vibrations though. Am I just lucky there? The motor mounts are the Schumakers, left is the interlocking type, RH is standard and they are both in good condition. I want to tuck this GV up against the body as close as I can for ground clearance reasons. With the way that the trans and driveline were out of alignment before, yet still vibration free, is it wrong to believe that by repositioning the trans/GV to true centerline and tucked up as I have seen it done elsewhere, that it will be okay? Thanks again.
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Re: Gear Vendors installation problem
[Re: Kern Dog]
#1187035
02/27/12 02:51 PM
02/27/12 02:51 PM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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In your earlier response you mentioned
"Raise the tail end of the GV/trans until it sits within 1/4" of the tunnel and modify the crossmember to fit via hogging out the mounting holes."
Rather than hog the holes why wouldn't you just shim the mount between the adapter & the mount? Personally I'd raise the trans till it touches, do the dimples others have mentioned & then adjust the driveline angle as needed... The higher you tuck the trans/OD the better the ground clearance plus your header will also tuck in tighter...
"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
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Re: Gear Vendors installation problem
[Re: The Dodge Guy]
#1187037
02/27/12 05:08 PM
02/27/12 05:08 PM
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Joined: Jan 2003
Posts: 1,263 Southwestern Ontario Canada
racealittle
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,263
Southwestern Ontario Canada
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Quote:
I purchased a used GV unit also but for a truck application. I have made several calls to GV and talked with Mike. I had to get a few small parts from them and they are great to work with even though I did not buy a new unit from them. Good luck.
Are you installing the truck style unit in a car? Just curious if it fits.
Too many cars, too many parts, too little coin, too little space to work in, too little time left to make it all happen!
Update: down to one ride, still too many parts, a little more jingle in the pocket, gaining space, and it's going to happen this year!
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Re: Gear Vendors installation problem
[Re: 1_WILD_RT]
#1187038
02/27/12 07:31 PM
02/27/12 07:31 PM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
OP
Striving for excellence
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OP
Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Quote:
Personally I'd raise the trans till it touches, do the dimples others have mentioned & then adjust the driveline angle as needed... The higher you tuck the trans/OD the better the ground clearance plus your header will also tuck in tighter...
This looks to be the better option. I have a call in to Mike at GV. I'll report back to pass along any new info.
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Re: Gear Vendors installation problem
[Re: Kern Dog]
#1187039
02/27/12 07:48 PM
02/27/12 07:48 PM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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Quote:
is it wrong to believe that by repositioning the trans/GV to true centerline and tucked up as I have seen it done elsewhere, that it will be okay? Thanks again.
As I said in my earlier post, the shorten shaft will change the angle of the shaft, in relation to the engine/tran to pinion relationship, you need to have a minimum of 1-2 degrees deflection of the driveshaft in relation to the engine/pinion parallel plane, you may/may not experience vibration, but with out a driveshaft deflection the life of the u-joints is also greatly reduced, too much deflection can result in possible vibrations and shorten u-joint life/failure,...it's a fineline to find a happy medium, that's why I suggest you have the shaft "in play" to determine just how much you can get away with tucking the GV up into the tunnel,....your rear pinion angle, and driveshaft deflection angle will determine how much you can push it up in the tunnel, the Shumacher mounts MIGHT set your engine higher than stock
Mike
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Re: Gear Vendors installation problem
[Re: DAYCLONA]
#1187040
02/27/12 07:53 PM
02/27/12 07:53 PM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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Don't guess on the driveline angles, most common problem for people trying to install aftermarket OD drivelines, and don't be afraid of modifying the floor or tranny mount/crossmember, the benefits of a good running OD offset the headaches of a bad vibrating driveline because your afraid of "altering" the car from stock......purchase an inclination gauge, and learn how to use it, measure your driveline angles on the car, as it sits compressed on the suspension, ok to work on a lift, as long as it's a drive on ramp style, you don't need level ground (within reason), if you reposition the car,to perform work at a later date, remeasure all the angles to confirm your progress
Mike
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Re: Gear Vendors installation problem
[Re: DAYCLONA]
#1187041
02/27/12 07:55 PM
02/27/12 07:55 PM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
OP
Striving for excellence
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OP
Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Some things I understand right away and other things take a little time. Dayclona; I have the prop shaft in a shop. It should be done late today or early tomorrow. Great advice from all and the help is truly appreciated.
Last edited by Frankenduster; 02/27/12 07:56 PM.
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Re: Gear Vendors installation problem
[Re: Kern Dog]
#1187042
02/27/12 08:07 PM
02/27/12 08:07 PM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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Quote:
Some things I understand right away and other things take a little time. Dayclona; I have the prop shaft in a shop. It should be done late today or early tomorrow. Great advice from all and the help is truly appreciated.
Franken,....how much "slop", or end play did you subtract from the shaft being shorten?....generally 1" minimun is required, so as not to bottom the yoke into the tailshaft of the transmission when the car squarts during it's suspension travel over the road
Mike
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