motor mount dimensions
Thread Starter
Race Director
Joined: Sep 2004
Posts: 11,874
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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
motor mount dimensions
what is the correct width of the motor mounts for a 69 vette?
can some one confirm these dimensions....
my frame engine "horn" width is 2 9/16"
and the motor mount gap is 2 5/8"
are all motor mounts external dimensions basically the same?
i have two sets of motor mounts one has a width of 2 1/2" and the other width is 2 5/8". when i measure my frame engine "horn width" it measures about 2 9/16". can some one confirm these dimensions. thks bob
can some one confirm these dimensions....
my frame engine "horn" width is 2 9/16"
and the motor mount gap is 2 5/8"
are all motor mounts external dimensions basically the same?
i have two sets of motor mounts one has a width of 2 1/2" and the other width is 2 5/8". when i measure my frame engine "horn width" it measures about 2 9/16". can some one confirm these dimensions. thks bob
Le Mans Master
Joined: Oct 2004
Posts: 5,269
Likes: 54
From: Orlando Florida
St. Jude Donor '05
Hi Bob,
just measured my motor mounts and the frame 'horns'. The mount is 2 9/16" - just barely over 2 1/2". The frame 'horn' is 2 1/2". That's on my '79 but it shouldn't be different from your '69.
just measured my motor mounts and the frame 'horns'. The mount is 2 9/16" - just barely over 2 1/2". The frame 'horn' is 2 1/2". That's on my '79 but it shouldn't be different from your '69.
Le Mans Master
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
I just went through this with my '69. It's a small block car and I just installed a big block. I bough new mounts for a '69 vette with a big block and they would not fit the frame horns. The ears were to narrow. I had to buy mounts for a small block car which were wider.
The other thing is the big block mounts are much taller than the small block mounts, so even if they had fit the frame horns, my fan would've hit the shroud.
Apparantly, the frame horns were different for SB and BB cars.
The other thing is the big block mounts are much taller than the small block mounts, so even if they had fit the frame horns, my fan would've hit the shroud.
Apparantly, the frame horns were different for SB and BB cars.
Thread Starter
Race Director
Joined: Sep 2004
Posts: 11,874
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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
thanks guys looks like the motor mounts are 2 9/16 and not 2 1/2 as i first thought....and the frame horns are just under 2 9/16 ....so we have a really tight fit but they do fit......i will just grease them up when it comes time for the install and they should slip into place.
has anybody ever put the motor mounts on the frame and then lower the engine to them???
i do it the other way buts its still a PITA
has anybody ever put the motor mounts on the frame and then lower the engine to them???
i do it the other way buts its still a PITA
Le Mans Master
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
Pro
Joined: Jun 2005
Posts: 725
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From: FL.
thanks guys looks like the motor mounts are 2 9/16 and not 2 1/2 as i first thought....and the frame horns are just under 2 9/16 ....so we have a really tight fit but they do fit......i will just grease them up when it comes time for the install and they should slip into place.
has anybody ever put the motor mounts on the frame and then lower the engine to them???
i do it the other way buts its still a PITA
has anybody ever put the motor mounts on the frame and then lower the engine to them???
i do it the other way buts its still a PITA
These are energy's, Polyurethane SHORT WIDE type. They are heavy duty and Fit correctly
Last edited by 69vettester; Apr 4, 2007 at 11:31 AM.
Thread Starter
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
thanks so i guess i can use either of the two sets that i have....i will have to do some thinking on this....i'm sure the ones with the 2 5/8 spacing would be the easiset to use since the would slip easily over the horn.
