Conversions & Swaps LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

Block mount locations?

Thread Tools
 
Search this Thread
 
Old Dec 5, 2006 | 02:31 PM
  #1  
dotstereo's Avatar
Thread Starter
On The Tree
 
Joined: Sep 2006
Posts: 127
Likes: 0
From: DFW, ATL, Tallahassee
Default Block mount locations?

Ok guys, I know it's a dumb question, but sometimes the simplest answers are the hardest to understand (and I did search).

Most everyone uses the same 4 holes (I've also heard these referred to as 'boss mounts') on the block for the motor mounts, but there look to be 2 more holes on the block next to the first 4.
Can these be used in conjuction with the other holes? (I need the mounts to sit further back on the block).

Here is a picture I marked. The holes I'm asking about are the ones on the far right.


Thanks a lot for the help.
Reply
Old Dec 5, 2006 | 02:49 PM
  #2  
Ted J's Avatar
TECH Enthusiast
iTrader: (4)
 
Joined: Nov 2001
Posts: 527
Likes: 0
From: Atlanta, GA
Default

Originally Posted by dotstereo
Ok guys, I know it's a dumb question, but sometimes the simplest answers are the hardest to understand (and I did search).

Most everyone uses the same 4 holes (I've also heard these referred to as 'boss mounts') on the block for the motor mounts, but there look to be 2 more holes on the block next to the first 4.
Can these be used in conjuction with the other holes? (I need the mounts to sit further back on the block).

Here is a picture I marked. The holes I'm asking about are the ones on the far right.


Thanks a lot for the help.
I wouldn't suggest using them. If you look at the holes on the right they don't have the triangular shaped braces on the side casted into them. That would be by better safe than sorry guess though.
Reply
Old Dec 5, 2006 | 04:33 PM
  #3  
'JustDreamin''s Avatar
TECH Resident
 
Joined: Dec 2004
Posts: 841
Likes: 0
From: Baltimore, MD.
Default

Also, not all blocks have that set of holes (most iron blocks) which is another reason why most people don't use them.

As mentioned above, there isn't the level of bracing / webbing on the rear bolt holes, which probably means they're not as stout. But, if you need to move the mounts rearward, I would suggest you pick up all 6 bolt holes (with a piece of flat plate). That would probably be overkill, but I'd rather err on that side than the other.

'JustDreamin'
Reply
Old Dec 5, 2006 | 05:40 PM
  #4  
bczee's Avatar
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (12)
 
Joined: Jan 2006
Posts: 6,670
Likes: 6
From: Concord, CA
Default

I have heard that some sand rail people have used the rear mounting holes. maybe utilizing all six ?? but I guess it can be used...
Reply
Old Dec 5, 2006 | 09:52 PM
  #5  
Ted J's Avatar
TECH Enthusiast
iTrader: (4)
 
Joined: Nov 2001
Posts: 527
Likes: 0
From: Atlanta, GA
Default

Another thing to factor in is that on the passengers side the starter is right in the way of those holes.
Reply
Old Dec 6, 2006 | 01:51 AM
  #6  
dotstereo's Avatar
Thread Starter
On The Tree
 
Joined: Sep 2006
Posts: 127
Likes: 0
From: DFW, ATL, Tallahassee
Default

Originally Posted by Ted J
Another thing to factor in is that on the passengers side the starter is right in the way of those holes.
After looking at more Ls1 blocks (its hard to find pictures of the passenger side) there is only a fifth hole anyway. The sixth hole (on the bottom) is only on the driver's side.

Here is a pic that shows what I'm talking about:


Thanks to everyone's help.

Last edited by dotstereo; Dec 6, 2006 at 12:56 PM.
Reply




All times are GMT -5. The time now is 02:30 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE