Drag Racing Discussions > Front Engine Dragsters

transmission mount

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Tim Jones:
After breaking the tailshaft on the glide in this car , all the dragster guys told me to stop bolting the tail down , after that no problems, this was back in the late 70's when I had this car,, Tim Jones

rooman:
I recently re-worked an altered that was trying to break the trans mount bracket off the cross member. The car had other issues (no uprights where the motor mounted etc) and when I fixed them I also cut the remains of the trans mount off the cross member. In the factory installation of a Chevy motor/trans the entire package hags off mounts near the front of the block and one on the extension housing so the transmission is obviously strong enough to carry a lot of load. As Bruce notes, even on a tube chassis car there is a lot of flex due to torque and mounting at three points (front, mid plate and trans) can have a tendency to tear things up. If letting the trans float is killing the bushing I would look at the chassis itself--it may be flexing enough to put excessive load on the coupler.

Roo

hemidakota:
Thank you for all your input. Cannot find anything wrong with chassis. Should we cut the mount off?

Dolmetsch:
Interesting thread. I always ran a mount but never solid. At the very least two layers of tire tue rubber under the trans pad with the bolts in and loctited or captured but not super tight however I ran torkflights which are in most cases long transmissions compared to a PG. I had one friend , engine customer, who said I was nuts and is constantly having to weld or replace his trans case because of severe cracking. Usually every season.
don

dreracecar:
Yes cut that mount off,  I'm running a long glide and a standard tailshaft bushing

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