Are solid motor mounts the same height
Thread Starter
Race Director
Joined: Apr 2000
Posts: 17,672
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Are solid motor mounts the same height
as OEM, in other words will my motor sit in the exact same position ? Any part numbers ? 
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
I've never had any fit issues with Moroso's solids, but do recommend not using a solid tranny
http://www.moroso.com/articles/artic...&catcode=28100
http://www.moroso.com/articles/artic...&catcode=28100
Last edited by TheSkunkWorks; May 4, 2007 at 12:56 AM.
Burning Brakes
Joined: Dec 2003
Posts: 1,004
Likes: 7
From: Adelaide South Australia
Is it feasible to lower the engine slightly with the engine mounts?
Are there any after-market engine mounts which allow the motor to sit lower.... eg 1/2 to 3/4".
The reason I ask, is that hood clearance with taller inlet manifolds is an issue.
Just wondering if anyone has sourced / used engine mounts with this feature. Tranny alignment would necessitate modded trans mounts too, I guess.
Lowering engine would also reduce roll centre.
Sounds like a good solution, as long as sump clearance is not compromised...
Are there any after-market engine mounts which allow the motor to sit lower.... eg 1/2 to 3/4".
The reason I ask, is that hood clearance with taller inlet manifolds is an issue.
Just wondering if anyone has sourced / used engine mounts with this feature. Tranny alignment would necessitate modded trans mounts too, I guess.
Lowering engine would also reduce roll centre.
Sounds like a good solution, as long as sump clearance is not compromised...
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
Is it feasible to lower the engine slightly with the engine mounts?
Are there any after-market engine mounts which allow the motor to sit lower.... eg 1/2 to 3/4".
The reason I ask, is that hood clearance with taller inlet manifolds is an issue.
Just wondering if anyone has sourced / used engine mounts with this feature. Tranny alignment would necessitate modded trans mounts too, I guess.
Lowering engine would also reduce roll centre.
Sounds like a good solution, as long as sump clearance is not compromised...
Are there any after-market engine mounts which allow the motor to sit lower.... eg 1/2 to 3/4".
The reason I ask, is that hood clearance with taller inlet manifolds is an issue.
Just wondering if anyone has sourced / used engine mounts with this feature. Tranny alignment would necessitate modded trans mounts too, I guess.
Lowering engine would also reduce roll centre.
Sounds like a good solution, as long as sump clearance is not compromised...
Yes, sump clearance can certainly become an issue on the street, regardless of how the engine is lowered. With an 8" Moroso pan, I have to keep an eye out for FOD and manhole covers, but the improved handling has been worth it.
Safety Car
Joined: Aug 2000
Posts: 3,909
Likes: 26
From: Clymer PA
I'm pretty sure they are the same in terms of how they fit. I'm running Moroso solid motor mounts with a Moroso solid tranny mount and haven't ever had any problems and that's with well over 50 1/4 mile passes with slicks and a ton of street driving.
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From: Corsicana, Tx
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Le Mans Master
Joined: Oct 2004
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From: Orlando Florida
St. Jude Donor '05
It's going to get really tight at the front, PS and crank pulleys ... the fan shroud has to be lowered as well if you're using the stock fan.
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Thread Starter
Race Director
Joined: Apr 2000
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
So it looks to me like they are the same height, otherwise I would be hearing stories about fans hitting the shrouds and also the power steering pulley is very close to the frame/crossmember. I am going to order the Moroso solid mounts, I already installed a poly tranny mount, thanks guys
Le Mans Master
Joined: Apr 2007
Posts: 7,353
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From: Graceland in a Not Correctly Restored Stingray
edit - According to TCI, solid transmission mounts are the number 1 cause of transmission case breakage.
Last edited by TheSkunkWorks; May 18, 2007 at 03:55 AM. Reason: ...just in...
Pro
Joined: Jun 2005
Posts: 581
Likes: 60
From: USA
I took the Moroso solid mounts, cut off the ears, rewelded them on in adjusted position to lower the motor about 3/4 inch. you have to watch the crank pulley clearance with the front frame crossmember, and the aforementioned shroud-to-fan interference (solved with electric fans). Drivers' side header fit was also affected, I think it was the #1 pipe made contact with the motor mount frame horn, required some dent tuning, also had to dent-tune to clear the steering box. On passenger side, header required some dimpling for idler arm bolt clearance. no problem with the LS7 oil pan, ground clearance is fine. It's a BBC with Hedmans. Using a stock poly-U trans mount. It wasn't enough to get hood clearance with my RPM Air-Gap and L88 air cleaner base with 2-3/4" tall element, so of course, I have the L88 hood now.
I might as well put a 4" (or taller) air-cleaner element on.
I might as well put a 4" (or taller) air-cleaner element on.
Tech Contributor
Joined: Jun 2004
Posts: 20,847
Likes: 959
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Sounds like your friend was inadvertantly using the engine/tranny combo as a giant torsion bar. When you hit a bump or corner hard, the frame will flex, and in that (solidly bolted) application the engine/tranny will try to resist that twist. Unfortunately, cast aluminum is a poor material to use in a torsion application.
