General Questions Place to post your questions that don't fit into one of the specific forums below.

65 Starfire frame

Thread Tools
 
Search this Thread
 
Old January 2nd, 2016 | 09:26 AM
  #1  
Edward Burgin's Avatar
Thread Starter
Registered User
 
Joined: May 2015
Posts: 5
65 Starfire frame

Is a 65 Starfire conv frame the same as a hardtop frame?
Old January 2nd, 2016 | 09:48 AM
  #2  
lemoldsnut's Avatar
Registered User
 
Joined: Nov 2008
Posts: 3,336
From: Redmond, Oregon
If it is like the A body cars it has the center section boxed. I have a 65 hardtop parts car we could compare pictures. I am sure Joe P would know also.

Larry
Old January 2nd, 2016 | 11:22 AM
  #3  
joe_padavano's Avatar
Old(s) Fart
 
Joined: Mar 2007
Posts: 48,377
From: Northern VA
Originally Posted by lemoldsnut
If it is like the A body cars it has the center section boxed. I have a 65 hardtop parts car we could compare pictures. I am sure Joe P would know also.

Larry
ALL GM convertibles with full frames came with a special frame that had boxed rails under the sills. Unfortunately, this closed box section retained salt and mud, leading to the common rust-out. Non-convertibles typically had open-section frames since the metal roof provided sufficient torsional stiffness to avoid the need for the extra-cost boxed section. In the 1960s you could order a Heavy Duty Frame option on some cars that was essentially the boxed convertible frame installed from the factory under a non-convert body.

And since the question often comes up, it is not feasible to simply weld flat plates to the open section of a non-convertible frame the way street rod frames are boxed. The factory convertible frames were essentially two "C" channels welded open end-to-open end, making a box section with significantly greater torsional stiffness.

Note that a convertible frame IS based on a hardtop frame, and depending on where the rust is on your convertible frame, you can sometimes carefully cut the additional boxing sections out of the old frame and weld them into a hardtop frame, turning it into a convertible frame.

This is a GTO frame, but you get the idea. Note how wide the side rails are with the added box sections welded in place. Also note that these box sections are not rectangular but are contoured to clear the floor pans. Also, since the space between them is narrower than on an unboxed frame, the trans crossmember is unique to the convertible frame.

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
oldsmobilty
The Newbie Forum
6
September 27th, 2012 04:26 PM
sixty9olds
General Discussion
1
June 14th, 2011 06:43 PM
1969goatman
Parts For Sale
0
August 30th, 2010 07:44 PM
DJMatthews
Chassis/Body/Frame
3
December 5th, 2006 01:28 PM



Quick Reply: 65 Starfire frame



All times are GMT -7. The time now is 04:44 PM.