Floor pan on a 70 SS. - Chevelle Tech
Interiors Upholstery and soft trim

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post #1 of 16 (permalink) Old Jan 8th, 20, 9:15 AM Thread Starter
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Floor pan on a 70 SS.

I'm replacing the seats in my car, it's a 70 Chevelle SS. I've removed the seats, and taken some OK pictures of the floor pan. It appears to be in good shape, which is great! What I'm wondering is, did this car come with buckets stock? Since it's an SS I'd assume that it did. Does the floor pan look correct for that? Sorry the pictures are only somewhat exposing the pan, the rest of the carpet was held down by seat belt mount points on the floor. I just need to know what kind of mounting brackets to get on the way from corbeau. They specify different part numbers for bucket vs bench style seats.
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post #2 of 16 (permalink) Old Jan 8th, 20, 9:29 AM Thread Starter
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Re: Floor pan on a 70 SS.

OR - if someone has a picture of the actual corbeau mounting bracket D504 / D704 I could probably tell if they'll work or not. Unfortunately all of them that I find are denoted with **Not actual picture type of thing. So they just show a standard picture for all of the mounts.

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post #3 of 16 (permalink) Old Jan 8th, 20, 10:50 AM
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Re: Floor pan on a 70 SS.

Bucket seats have nothing to do with a car being an SS.
SS cars came with bench seats and some non SS cars came with bucket seats.

I can't figure out the pictures

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post #4 of 16 (permalink) Old Jan 8th, 20, 10:55 AM Thread Starter
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Re: Floor pan on a 70 SS.

Gotcha. For some reason I had it in my head that SS cars would come with only buckets. Today I learned.

The pictures are looking at the floor from outside the passenger side. The first one is looking directly down at it, and the others are some that I tried to get decent pictures of looking more back under the carpet. I know they are not great pictures.......I was just hoping there would be something that was easy to identify if this was a bucket or bench seat car.

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post #5 of 16 (permalink) Old Jan 8th, 20, 11:22 AM Thread Starter
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Re: Floor pan on a 70 SS.

I suppose by looking at the fisher tag on the car I may be able to tell if it had bench or bucket seats by the TR code, right? So long as the original pan has not been changed.

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post #6 of 16 (permalink) Old Jan 8th, 20, 11:34 AM Thread Starter
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Re: Floor pan on a 70 SS.

I emailed the guys over at Corbeau as well, very fast response. Here are the D504 and D704 brackets if for some reason anyone ever needs actual pictures of them. They are close enough that it's still hard to tell! I was hoping there would be a clear visible difference.
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post #7 of 16 (permalink) Old Jan 8th, 20, 11:55 AM
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Re: Floor pan on a 70 SS.

Factory installed bucket seat cars have a bracket set welded to the floor that the buckets bolt to. From what I see in your pics you don't have the brackets.

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post #8 of 16 (permalink) Old Jan 8th, 20, 12:16 PM Thread Starter
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Re: Floor pan on a 70 SS.

I do not own the assembly manual, but it sounds like it's worth the investment.

I had wondered about those brackets. All four corners of the existing seats were secure with bolts through the floor, none of them were studs that came up from the floor. So perhaps it was a bench seat car! Now I have to check the trim tag when I get home

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post #9 of 16 (permalink) Old Jan 10th, 20, 9:04 AM Thread Starter
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Re: Floor pan on a 70 SS.

Trim tag - it's been painted over with something so it's hard to make out. It's either 755 or 75S.

According to this, If 755 it was a bench seat car. https://chevellestuff.net/1970/interiors/index.htm

I have no idea what a 75S would mean. My guess is it's 755 but for some reason to me that last 5 looks like an S.
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post #10 of 16 (permalink) Old Jan 10th, 20, 9:16 AM
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Re: Floor pan on a 70 SS.

On a 70 Chevelle 755 is the code for a black bench seat.
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post #11 of 16 (permalink) Old Jan 10th, 20, 9:21 AM Thread Starter
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Re: Floor pan on a 70 SS.

Ahhhhhh now I remember why the letter "S" was in my mind. On tags from some plants, the letter S designated the seat had headrests. Not on this one though. That must be a 5.

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post #12 of 16 (permalink) Old Jan 22nd, 20, 11:15 AM Thread Starter
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Re: Floor pan on a 70 SS.

Neither the bench nor the bucket seat brackets matched the holes that were there. I am not surprised. Anyway, here is what a set of Corbeau LG1's look like in there.
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post #13 of 16 (permalink) Old Jan 22nd, 20, 12:35 PM
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Re: Floor pan on a 70 SS.

How did the brackets work out?

Tighten it till it strips and back it off a quarter turn.
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post #14 of 16 (permalink) Old Jan 24th, 20, 9:51 AM Thread Starter
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Re: Floor pan on a 70 SS.

New holes required.

I have no idea what the previous owner did to this car. There was only one set of holes in the floor that were a good pattern for the old Jazz seats. That particular set of holes did not fit either the bench or bucket brackets from corbeau. It makes me wonder if at some point they didn't replace the floor and just custom drill the holes for the Jazz seats only.

When the weather warms back up I'll go back and patch these other holes over so they don't rust.

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post #15 of 16 (permalink) Old Jan 24th, 20, 11:18 AM
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Re: Floor pan on a 70 SS.

Do you sit lower in the car? I'm looking for some headroom.

Tighten it till it strips and back it off a quarter turn.
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