Engine mount question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bsteele · 03-06-2011, 08:31 PM

I pulled the 307 out to replace it with a fresh 350. The old motor mounts were separated, so I went to Napa and got new ones. I put the new ones on the block, put the trans back to the motor and set it all back in. Problem though. The passenger side just will not line up. I am only about half of a hole or less off, but it will not go. Am I missing something? I have loosened the towers to let them move. It will line up front to back, but the way it is off is like the engine is not far enough down in the "cradles". Help???!!!!! I let it sit overnight hoping the new rubber would compress a little, but it didn't.

Longhorn Man · 03-06-2011, 09:51 PM

loosen everything up. Both towers, and then both motor mounts on the engine. Once you get the bolts started (on both sides) then tighten everything up.

Hubscrub · 03-06-2011, 10:10 PM

i had that same problem on my wife's 67 i tried almost everything, my dad came in (30+ years auto tech) and said let me show ya a trick we used to do on these. He ground a point on the bolt (like a sheet metal bolt) and hit it with the air ratchet and she sailed right in.

bsteele · 03-06-2011, 10:59 PM

I finally got it. I lifted the engine back up and checked the threads on the motor mount. They were "boogered up" a little bit. I cleaned them up. I remembered the trick you were talking about. I saw a man grind the first two threads down on a bolt to start in a header one time. I did that. Dropped it back down and with a lot of "massaging" and some prayers, it finally lined up.

Hubscrub · 03-06-2011, 11:06 PM

good to hear i wasted alot of time on that bolt

bsteele · 03-06-2011, 11:10 PM

Well I wasted alot of time last night when I had help. Then went out tonight with no help and finally got it. Now it's time to move on to something else. I am just ready to drive the thing!!!

03-06-2011, 08:31 PM	#1
bsteele Registered User Join Date: Feb 2009 Location: Kershaw, South Carolina Posts: 113	Engine mount question I pulled the 307 out to replace it with a fresh 350. The old motor mounts were separated, so I went to Napa and got new ones. I put the new ones on the block, put the trans back to the motor and set it all back in. Problem though. The passenger side just will not line up. I am only about half of a hole or less off, but it will not go. Am I missing something? I have loosened the towers to let them move. It will line up front to back, but the way it is off is like the engine is not far enough down in the "cradles". Help???!!!!! I let it sit overnight hoping the new rubber would compress a little, but it didn't.

03-06-2011, 09:51 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Engine mount question loosen everything up. Both towers, and then both motor mounts on the engine. Once you get the bolts started (on both sides) then tighten everything up.

03-06-2011, 10:10 PM	#3
Hubscrub Cruzin Join Date: Dec 2009 Location: on the road Posts: 2,835	Re: Engine mount question i had that same problem on my wife's 67 i tried almost everything, my dad came in (30+ years auto tech) and said let me show ya a trick we used to do on these. He ground a point on the bolt (like a sheet metal bolt) and hit it with the air ratchet and she sailed right in. __________________ Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14 Last edited by Hubscrub; 03-06-2011 at 10:11 PM.

03-06-2011, 10:59 PM	#4
bsteele Registered User Join Date: Feb 2009 Location: Kershaw, South Carolina Posts: 113	Re: Engine mount question I finally got it. I lifted the engine back up and checked the threads on the motor mount. They were "boogered up" a little bit. I cleaned them up. I remembered the trick you were talking about. I saw a man grind the first two threads down on a bolt to start in a header one time. I did that. Dropped it back down and with a lot of "massaging" and some prayers, it finally lined up.

03-06-2011, 11:06 PM	#5
Hubscrub Cruzin Join Date: Dec 2009 Location: on the road Posts: 2,835	Re: Engine mount question good to hear i wasted alot of time on that bolt __________________ Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14 Last edited by Hubscrub; 03-06-2011 at 11:06 PM.

03-06-2011, 11:10 PM	#6
bsteele Registered User Join Date: Feb 2009 Location: Kershaw, South Carolina Posts: 113	Re: Engine mount question Well I wasted alot of time last night when I had help. Then went out tonight with no help and finally got it. Now it's time to move on to something else. I am just ready to drive the thing!!!

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