Engine height after solid motor mounts.
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Engine height after solid motor mounts.
Has anyone else installed solid motor mounts and found that the motor's position was lifter about an inch? I will still have clearance under the hood but the headers are closer to the rocker panels and I'm wondering if this might affect the drive line.
anyone had a higher engine position after installing Moroso solid motor mounts?
anyone had a higher engine position after installing Moroso solid motor mounts?
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Can't comment about solid mounts as I have NEVER used them on any car...but, fresh rubber mounts will raise the engine by pushing an inch in height.....easy......and yes, it WAS a problem untill Ifinally modded hell outta my cross support and ditched those damn holes, ran the pipe under it now....cutting out the lower loop....so much better, it's a joke....
PM/email for a pix, I dunno how to post it here....
PM/email for a pix, I dunno how to post it here....
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Well, I know the rubber mounts that are coming out are still good. no slop, they look fine, and even with the serpentine pulley I had almost a full inch of clearance over the cross member. Now though, with the solid mounts there are two problems with fitment. The ears are just a bit too narrow for the barrel so I just widened them a bit in the vice. The hole for the bolt is also about an inch lower.
So, I have a few options.
I can run it as is with the extra inch of height.
or...
I can drill holes center to center an inch above the lower ones.
So, I have a few options.
I can run it as is with the extra inch of height.
or...
I can drill holes center to center an inch above the lower ones.
Instructor
Joined: Feb 2006
Posts: 118
Likes: 25
From: Killearn Scotland
What mounts are you using?
I used these from Jegs;
Moroso 62500
I found they fitted straight in (maybe a slight tap as the "ears" were a bit tight on the chassis), but no change in height over my old poly-mounts.
NB. After I placed my order, I noticed that there's another solid mount sold by Jegs, which is listed for Big Blocks and Corvettes. I thought I'd fangled my order but as mentioned these ones I have popped straight in.
I used these from Jegs;
Moroso 62500
I found they fitted straight in (maybe a slight tap as the "ears" were a bit tight on the chassis), but no change in height over my old poly-mounts.
NB. After I placed my order, I noticed that there's another solid mount sold by Jegs, which is listed for Big Blocks and Corvettes. I thought I'd fangled my order but as mentioned these ones I have popped straight in.
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Are you sure the mounts you took out were right for the car. chevy raised there engine to get the ujoints at a slight angle, ford offset
the rear third member. chrysler offset the engine, think about the angles they use on four wheel drive vehicles.
the rear third member. chrysler offset the engine, think about the angles they use on four wheel drive vehicles.
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Yeah, I bought the originals specifically for a 1977 Corvette about ten years ago when I rebuilt the motor.
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
NAPA sells a decent mount that has a hook/something arrangement in it so engine can't escape the mount easy....put one in a year ago or so....about #3 on the torque/driver's side in 12 years now....
I"m leary of solid mounts, all that vibration on the mount horns, all that shaking....engineering 101, don't stress the merchandise.....
I"d even take urethane over solid....but that's ME, not a drag racer....
I"m leary of solid mounts, all that vibration on the mount horns, all that shaking....engineering 101, don't stress the merchandise.....
I"d even take urethane over solid....but that's ME, not a drag racer....
Race Director
Joined: Apr 2000
Posts: 17,673
Likes: 199
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I have replaced my rubber mounts with new rubber ones with no change in anything, then I put in Moroso solid mounts and again, no change in anything, motor sits right where it sat before. I am going to try poly next 
There is something wrong with what you are doing, all the proper mounts for your Vette should not change anything. There are 3 or 4 solid motor mounts from Moroso for small block Chevys make sure you have the correct ones for your Vette
There is something wrong with what you are doing, all the proper mounts for your Vette should not change anything. There are 3 or 4 solid motor mounts from Moroso for small block Chevys make sure you have the correct ones for your Vette
Last edited by MotorHead; Sep 16, 2007 at 05:33 PM.
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Yeah, I didn't touch the trans mount. It's still the stock rubber one I put in when I rebuilt the motor last.
Unless the wrong mounts were put in the right package, I have the right ones.
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
THAT comment rings a sauer note with me.....forget the exact referance, but it would not be the first time something like that happen....
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
I run the morosso solid mounts and find the engine sits the same as the poly mounts. I installed the solid mounts because my engine was torquing over too hard and I also wanted the block to act as a stiffening member for the steering box.
I experience no vibration and feel the motor revs crisper.
I experience no vibration and feel the motor revs crisper.
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
So, should I...
...drill some holes that would leave the motor at the original height...
...install and let the motor sit higher than it did before...
...or sell these mounts and buy another set hoping they would fit better?
...drill some holes that would leave the motor at the original height...
...install and let the motor sit higher than it did before...
...or sell these mounts and buy another set hoping they would fit better?
Racer
Joined: Jul 2004
Posts: 408
Likes: 0
From: Buffalo NY
I just bought some Moroso solid mounts too. Haven't installed them yet. But I needed to raise my motor up some, the crank pulley is so close the crossmember that I couldnt get my belts off.
I actually ordered part 62530, according to Moroso thats the number for Vettes.
I actually ordered part 62530, according to Moroso thats the number for Vettes.
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
See I already had about a full inch between the crank pulley and the cross member.
Le Mans Master
Joined: Oct 2005
Posts: 9,429
Likes: 44
From: Macon, GA
Matt. You may remember that I used those solid mounts and had a problem so I took them out and went the poly route. For some reason, the bottom bolts wouldn't tighten up flush to the block on either side
. I didn't have any problem at all with the poly mounts. 
. I didn't have any problem at all with the poly mounts.
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Scott - The biggest reason for installing the solid mounts is to stiffen things up a bit in the front. I plan to install a heavier duty swap bar and a spreader bar but those are not going in for a while. This was to be a cheap and fast way to stiffen up the front.
Aside from the frame location hole being too tall, the block bolts all went in perfect. I'm looking for the purchase information from Summit to see if they will exchange them for the right ones. Looks like the the tall mounts are in the wrong packaging.
Aside from the frame location hole being too tall, the block bolts all went in perfect. I'm looking for the purchase information from Summit to see if they will exchange them for the right ones. Looks like the the tall mounts are in the wrong packaging.
