Trans-Dapt motor mount experience?

-
Demonx2

Demonx2

FABO Gold Member
FABO Gold Member
Joined
Dec 10, 2019
Messages
2,026
Reaction score
4,340
Location
Florida - near Ocala
Does anyone have experience with using Trans-Dapt motor mounts in their 72 A-body (or equivalent)? Not the mount bracket but the rubber biscuit portion.
Trans-dapt shows a #4219 that says it has a short interlocking and a tall interlocking mount. Basically the height of the mount is what is different. But why would you want two different heights? I've only ever seen the standard "short" flat biscuit used (like on my 71 Demon 340). This is for a 408 in a 72 Demon and not sure I have height for a taller mount. I want to use the interlocking type (it will also have a torque strap) so I figured if nothing else, I could use the short interlocking one on the driver side and a standard one on the pass side since that mount doesn't take so much abuse. But even after calling Trans-Dapt, I'm not 100% convinced they even make a short interlocking mount. So I thought I'd turn to the experts...thx!!
 
I use the regular biscuits with 2 1/4" thru bolts snugged with nylock nuts to prevent the mount from ripping apart. A prestreched chain takes the abuse on the driver's side. I believe the interlocking ones were used on pickups. My 83 250 had them.
 
Demonx2 said:
Trans-dapt shows a #4219 that says it has a short interlocking and a tall interlocking mount. Basically the height of the mount is what is different. But why would you want two different heights?
Click to expand...

are you putting headers on that 408?
the taller ones (originally for trucks) will help you keep the headers off the center link
 
mderoy340 said:
I use the regular biscuits with 2 1/4" thru bolts snugged with nylock nuts to prevent the mount from ripping apart. A prestreched chain takes the abuse on the driver's side. I believe the interlocking ones were used on pickups. My 83 250 had them.
Click to expand...
Thx for the reply. So you must drill out the stud that comes in the rubber biscuit and then install a thru-bolt? I've heard others say they use that too and it seems like that would be a solution similar to the interlocking mount to prevent a rubber failure from allowing the engine to take out the hood. The chain/turnbuckle/torque strap then becomes extra insurance as well.
 
diymirage said:
are you putting headers on that 408?
the taller ones (originally for trucks) will help you keep the headers off the center link
Click to expand...
Thx also for your reply. Yes, the engine has Hooker Super Comp headers. And you're right, the taller mount would give added clearance on the bottom for the drag link. I just won't know until I set the engine in if I have the height on the top side. It has a six-pack hood but uses a Super Victor intake so that's pretty tall on the top side. Seems we're trapped on the bottom and top and won't know until I drop the engine in.
 
truck mounts on a 65, they used tall ones stock anyway. No need for through bolt or chain.
The holy grail of motor mounts

20190910_103400-jpg.jpg
 
pishta said:
truck mounts on a 65, they used tall ones stock anyway. No need for through bolt or chain.
The holy grail of motor mounts

View attachment 1715544309
Click to expand...
Thx - that mount being for a diesel has to be quite capable. We all dream of our engine making torque like a diesel! Now if I just can walk the line between room on the bottom side and room under the hood I'll be all set. I'll use your reference to the 1-11/16" thick and compare it to my standard "thin" biscuit mounts to see just how much height that would add. I think the later A-bodies use the thinner mounts so I'd have to get a thicker mount for the RH side if I go this interlock route to keep from tipping the engine to the right. Thx again for trying to help everyone out there - your article is very helpful!
 
Does anybody have experience with the "Mity Mounts" from Dyna-Tech Engineering? Looks like another interlocking solution as well. Just wondered if there's any experience with these out there.
 
You must log in or register to reply here.
-

Back
Top