Prothane trans mount

[BB73Challenger]

Hi all,

just wanted to pass an update...

I was reading a post for trans mounts and the Prothane mount was mentioned, and after comparing it to the broken advanced auto mount, I could see why.

It's frame is made of a MUCH heavier gauge steel - and the center has been welded to prevent a break and complete seperation you get from a cheap rubber center style mount.

Thanks again and I just wanted to pass on my real world experience!

[422STROKER]

Nice, the old one looks good, why did you change it?

I went with the energy susp insert but I hadn't seen that Prothane one before looks Stout for sure.  Where did you get it and how much 

Tom

[BB73Challenger]

yeah it's stout!

summit had it for 35 or 36 bucks!

[RusTy/SE]

How is the fit?

[Changin Gears]

I think I am going to order one of those since the trans mount is suposed to control forward/rearward movement of the engine/transmission.  In a drag car that produces 2-3 g's in 1st gear, the engine/trans is pushing about 2000 lbs on that mount.  It gets worse if you run elephant ears or a motor plate. Those offer no forward/rearward and are commonly bent.

[BB73Challenger]

How is the fit?

The fit was same as the original, no changes were needed.

I can't remember what I paid for that cheap aftermarket from advanced cost me, but even if it was double at under 40 bucks this was the way to go.

[mopar12372]

manciniracing.com  sells that same mount !

[brads70]

Wish I had seen this earlier! I just put in a new one. Jobber supplied! That looks much better built! Nice design!

[71chally416]

manciniracing.com  sells that same mount !

Yep, I have one on my Chally>
http://chucker54.stores.yahoo.net/malamocopomo.html

[Aracer]

?, Is the Mancini or the Summit trans. mt. taller, or raise the transmission ? It looks like it might raise the tail 1/2".

[71chally416]

I don't think so. No problem with mine. 

[Aracer]

I went with the original mount repaired with the $12 Prothane bushing. Yours looks like heaver gauge steel too.
       I can use more height, because when I changed to the longer 727 AT. the drive shaft angle changed. I stacked two 1/4" stock spacers between the mount for a correction to upward 1.3 degree, but it's still not a downward angle to the drive shaft.  The other thing I did was to swap out the SS springs for the Mopar 440/cuda type and that lowered the body and also changed the front u-joint angle. I've seen NHRA stock racer's drive angles and they looked like mine now. I asked the owner about the front angle and he said that it straightens out when the power is on because the front raises the whole car.
     The rear pinion angle at rest, is 4 degrees nose down, compared to the drive shaft,   the actual degree @ the housing pad to pinion is 5 degree nose up when pads are level (factory welded, stock pads, 1968, 8 3/4", B body housing using  Dr. Diff. front hangars in the bottom hole). Also, the shaft still runs vibration free.
     I'm gonna try one of those complete Prothane  transmounts , for the increased strength it offers. thanks!

[Ck[FIN]]

I think I am going to order one of those since the trans mount is suposed to control forward/rearward movement of the engine/transmission.  In a drag car that produces 2-3 g's in 1st gear, the engine/trans is pushing about 2000 lbs on that mount.  It gets worse if you run elephant ears or a motor plate. Those offer no forward/rearward and are commonly bent.

In a drag car you really should mount the engine to to the frame from the back too. Thick plate between engine and trans too. Helps with the trans mount. issue.

[HP2]

I'd be reluctant to get the trans mount too firm. If you have any u-joint or rear end issues that happen, the rigid mounting on the trans could lead to broken extension housings since the trans can't flex as much and the driveshaft would put a bending load right into the output shaft and extension housing. That is why I've always used rubber trans mounts, even if I have solid mounts on the engine.

[solarguy]

I tried the mancini version and it vibrated too much for my taste, way too stiff for a street car IMHO