65/70 Impala Frame Differences - Impala Tech
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post #1 of 3 (permalink) Old 01-17-2020, 01:22 PM Thread Starter
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Join Date: Jun 2014
Location: San Jose, CA
Posts: 312
65/70 Impala Frame Differences

Some info regarding the frames I ran into on Facebook.

Educational info. These frames are NOT all the same as some like to believe:
- 65-66 frames will interchange (including convertibles). Some minor differences ,but still interchangeable without having to do any modifications!
- 65-66 idler arm mounts from the top of the frame.
- 65-66 rear trailing arms are different from 67-70.
- 67-70 idler arm mounts from the side of the frame.
- 67-70 frames are NOT interchangeable with 65-66 without doing serious modifications!
- 69-70 frames don't have mounting holes for the rear bumper. They mount from the inside of the trunk!
- 65-70 rear ends interchange.
- 2 & 4 door frames are the same whether its from an Impala,Biscayne,Belair,Caprice, wagon, Super Sport or not!

Even though a hardtop frame will fit under a convertible. You shouldn't use one without proper reinforcement of the frame!!
If you need a convertible frame.You should use a convertible frame only!
Hardtop frames are 3 inches wide .
Wagons use the same frame as the 2 and 4dr cars!
Convertibles are 4 inches wide under the body section and have an extra body mount.
Might vary from year to year.
Only convertible frames are different.
Super Sports were only a trim and interior package.Had nothing to do with the frame or suspension. You could get a straight 6 in a SS!
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post #2 of 3 (permalink) Old 01-18-2020, 01:15 PM
Join Date: Nov 2019
Posts: 5
looking for ideas on how to clean inside of frame on 65 Impala. Frame has been powder coated and outside is great but inside full of dirt, sand, etc. Thought about hanging the frame from a Bobcat bucket and pressure washing? When moving or working on the frame this crud just keeps coming out. Makes me think I got hosed rather than the inside of the frame?Elmo
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post #3 of 3 (permalink) Old 01-18-2020, 07:30 PM
Join Date: Jan 2006
Posts: 12,892
You have the right idea Elmo. Advise running a TV camera on a stick up inside the frame once it is cleaned out to see what it looks like. Could have big pits and bad scale issues that requires more work with that much road grime in it. Could have been driven on a dirt farm road all of it's life or taken to the Atlantic beaches every day by a surfer driving on the salty sand for all you know.

Big Dave
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