408 motor mount clearance issue
Apr 14, 2007 | 09:38 PM
Thread Starter
Racer
Joined: Aug 2004
Posts: 397
Likes: 1
From: Andale Kansas
408 motor mount clearance issue
The pass side of iron block has a boss in the way of bolting up the motor mount. Do you take material off of the mount or block?
Apr 14, 2007 | 09:54 PM
Joined: Feb 2004
Posts: 9,615
Likes: 13
From: Burlington NC
Take it off the mount.
Apr 14, 2007 | 10:33 PM
Thread Starter
Racer
Joined: Aug 2004
Posts: 397
Likes: 1
From: Andale Kansas
Thanks, that's great-much easier.
Apr 14, 2007 | 10:50 PM
Burning Brakes
Joined: Jan 2005
Posts: 900
Likes: 0
From: New Bern NC
My engine builder cut the block w/ a side grinder. I would not want to alter the mount. If I recall it was a threaded nipple on the side of the block that had to be cut in half.
Apr 14, 2007 | 11:35 PM
Thread Starter
Racer
Joined: Aug 2004
Posts: 397
Likes: 1
From: Andale Kansas
That is the casting that is in my way. I didn't think it was anything that I would be using as it is behind part of the motor mount.
Apr 15, 2007 | 01:46 AM
Drifting
Joined: Jan 2005
Posts: 1,271
Likes: 1
From: V town california
wait a minute im gonna be installing a 408 in my car and i wasnt aware of this issue. can i have my engine builder modify this??
Apr 15, 2007 | 09:48 AM
Melting Slicks
Joined: Nov 2002
Posts: 2,884
Likes: 260
From: Jamison Pa
St. Jude Donor '11-'25
It's simple!
I used a hacksaw to cut the boss off. It's easy to get at with the motor on a stand. I did not cut the mount
Apr 15, 2007 | 12:19 PM
Drifting
Joined: Jan 2005
Posts: 1,271
Likes: 1
From: V town california
can some one post pics of this please
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Apr 15, 2007 | 03:04 PM
Thread Starter
Racer
Joined: Aug 2004
Posts: 397
Likes: 1
From: Andale Kansas
Hope this helps (circled in red). Ken
Apr 15, 2007 | 04:35 PM
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
Just notch the mount. You dont need the boss for anything. Alot of guys have it machined down when they machine the motor. But if the motor is already built, I would take it off of the mount itself.
My mount is notched, and with over 850rwtq, if ANYTHING was to go wrong I would see it. I inspected it off the motor last week and didnt see one fracture or deformation at all.
Quote:
Originally Posted by
KS Rebuilder
Hope this helps (circled in red). Ken
Last edited by Jeff @ TPE; Apr 15, 2007 at 04:38 PM .
Reason: spelling
Apr 15, 2007 | 07:03 PM
Heel & Toe
Joined: Oct 2004
Posts: 21
Likes: 0
From: Mt Pleasant NC
When I Installed My 408 We Used A Sidegrinder On The Block. Evetrything Worked Out Great.
Apr 16, 2007 | 04:45 PM
Pro
Joined: May 2006
Posts: 723
Likes: 0
From: MOTOWN / Fort Dix NJ MI
looks like you can do both
Apr 17, 2007 | 12:43 AM
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
Quote:
Originally Posted by
bayarea
wait a minute im gonna be installing a 408 in my car and i wasnt aware of this issue. can i have my engine builder modify this??
Same thing has to be done on LS2 blocks to make them fit.
Apr 17, 2007 | 03:03 PM
Le Mans Master
Joined: Jan 2001
Posts: 5,786
Likes: 6
From: Lafayette Colorado
I ground down the block also on mine
Keith
