the best thing to do is run a safety chain to the frame.
Looking for Motor Mounts!
Thread Starter
Burning Brakes
Joined: Sep 2004
Posts: 869
Likes: 1
From: Bradford Pa
Looking for Motor Mounts!
Does anyone know of someone who makes a nice set of poly or solid mounts for the early C4's or if the stock mounts are sufficient to withstand 600-800hp? i figure i might as well swap the mounts even if they're good. it's been 143k miles of abuse and tripling the power on mounts that old scares me a bit...
Drifting
Joined: Nov 1999
Posts: 1,801
Likes: 2
From: St. Paul MN
I second this question. I bought some Energy Suspension polyurethane inserts for the clam shell mounts but they didn't fit the Vette clam shells. I've looked through the Energy Suspension catalog and they don't list a mount for the C4 Vettes. I just sent them an e-mail asking about it. I'll post their response.
Thread Starter
Burning Brakes
Joined: Sep 2004
Posts: 869
Likes: 1
From: Bradford Pa
Originally Posted by tpi 421 vette
I couldn't find anything other than stock mounts myself. I made a torque arm from the cylinder head to the frame with heim joints and tube, to limit engine travel.
with the big block, i'm probably only running the alt. and PS so i should have a few open pads...how did you go about fabbing this arm? any pics?
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Drifting
Joined: Dec 1999
Posts: 1,319
Likes: 2
From: Douglasville GA
Originally Posted by 4bblC4
Ever think about solid mounts? would have to put a solid mount on the tranny too.
Tom Melton
82 CE (with rubber tranny mount)
86 Z51 Coupe with solid tranny mount)
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Originally Posted by tommelton
Huh? Do you know how a C4 Vette is put together? This is the C4 section isn't it? There is NO tranny mount, unless you consider the SOLID torque arm to be the rear tranny mount (it is by the way - solid)...
Tom Melton
82 CE (with rubber tranny mount)
86 Z51 Coupe with solid tranny mount)
Tom Melton
82 CE (with rubber tranny mount)
86 Z51 Coupe with solid tranny mount)
Pro
Joined: Aug 2001
Posts: 626
Likes: 0
From: Lake Lure NC
I have heard you do not want to run a solid mount with the C4 blocks Lt1/lt4. What I have heard is they have taken so much material out of the block to lighten, its like paper. Solid mounts would rip the block apart. Do not have any data to back this up, however thought I would share what I have heard.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by LD85
Why,,,, does not matter to me,, I am just saynig I could see how it could be done.
Race Past!
Race Past!
RACE ON!!!
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Originally Posted by CFI-EFI
I'd be afraid of messing up the engineering by adding a fixed mounting point at the rear of the trans. Kind of like running guide plates with self aligning rockers. I think there is a chance things could bind up. I'd like to see solid mounts at each side of the engine and solid bushings in the ends of the batwing.
RACE ON!!!
RACE ON!!!
Question,,, does an automatic have the same mouting as a stick, no crosssbrace?Gotta run,,,,,,,,,,,,,,20th anniversary tonight wifey is waiting!
Thread Starter
Burning Brakes
Joined: Sep 2004
Posts: 869
Likes: 1
From: Bradford Pa
well that wouldn't be cool...i've heard of that happening as well...
i'll prolly just score a set of stock ones...new ones should be fine...
oh, and the motor is assembled...yay...see new thread for pics
i'll prolly just score a set of stock ones...new ones should be fine...
oh, and the motor is assembled...yay...see new thread for pics
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Originally Posted by mothersworry
I have heard you do not want to run a solid mount with the C4 blocks Lt1/lt4. What I have heard is they have taken so much material out of the block to lighten, its like paper. Solid mounts would rip the block apart. Do not have any data to back this up, however thought I would share what I have heard.
Drifting
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Originally Posted by tommelton
Huh? Do you know how a C4 Vette is put together? This is the C4 section isn't it? There is NO tranny mount, unless you consider the SOLID torque arm to be the rear tranny mount (it is by the way - solid)...
Tom Melton
82 CE (with rubber tranny mount)
86 Z51 Coupe with solid tranny mount)
Tom Melton
82 CE (with rubber tranny mount)
86 Z51 Coupe with solid tranny mount)
ANY movement that is not transmitted to the tires (via engine torquing over, driveline movement, even the IRS's movement) is wasted hp; it does not translate into power at the ground. The more solid you can make the powertrain and drivetrain the better the chassis will work and less breakage will occur.
That said, I've actually got some 3/16" plate that I've templated to have some solid mounts built... They will be one piece bent on a hyd. press (just like solid mounts you find from Moroso and others). But, like all of my projects it will come about when I have time...
-Jeb