1972 LT-1 Front and Rear Spring Option

[Jack C.]

I have my Corvette Order Copy which was discovered under the dash. On it, it lists Front and Rear Springs as an option. I can barely make out the option #'s, from what I see, it reads 2VF?2HS for the front and 2VG?2H? Was this part of the LT-1 package?

[Anthony F.]

Re: 1972 LT-1 Front and Rear Spring Option

The Order Copy on my 72 LT-1 is mostly legible, the front looks like 2VF62HI, or maybe 2VF62HT, the last letter is barely legible but it is definitely not an 'S'. The rear is 2VG32EA. They were part of the LT-1 package.

I checked my AIM (September 1971 version), there is an F41 Special front and rear suspension listed as an option but I don't believe it was actually offered in production. Maybe that was part of the ZR1 package.

[Jack C.]

Re: 1972 LT-1 Front and Rear Spring Option

Thanks Anthony!

[Anthony F.]

Re: 1972 LT-1 Front and Rear Spring Option

I turned over the page and looked at the carbon copy side. The last letter for the front springs is a little clearer, I'll say it is an 'I'. Anywhere else a 'T' was printed was pretty distinct.

[Joe L.]

Re: 1972 LT-1 Front and Rear Spring Option

I have my Corvette Order Copy which was discovered under the dash. On it, it lists Front and Rear Springs as an option. I can barely make out the option #'s, from what I see, it reads 2VF?2HS for the front and 2VG?2H? Was this part of the LT-1 package?

Jack-------


These are standard springs for 1972 small block. All 1972 small blocks used these springs except for ZR-1.

One slight correction: 1972 small blocks with C-60 used different front springs than small blocks without C-60.

[Gary S.]

Re: 1972 LT-1 Front and Rear Spring Option

My 72 LT-1 Order Copy is pretty clear. Front Spring 2VF62HT (there is a small crease right at the "6" but it is still reasonably clear). Rear Spring 2VG32?A (again, same crease across what I believe to be an "E"). SN is 6421, early November car.

Gary

[Anthony F.]

Re: 1972 LT-1 Front and Rear Spring Option

Per Joe, I have C-60, so maybe that's why my option # appears to end in an 'I'.

[Ron G.]

[Ed H.]

Re: 1972 LT-1 Front and Rear Spring Option

My 72 LT-1 with C-60 air conditioning order sheet is pretty clear. The front springs are 2VF62HT and the rear springs are 2VG32EA.

[Joe L.]

Re: 1972 LT-1 Front and Rear Spring Option

Just my two cents and most of you probably Are aware of this, but small blocks to include base motor and LT-1’s used the same Springs front and rear with exception of the ZR-1 package. However, if your car does have air-conditioning then the specs on the front and rear springs would have change. While we’re at it only in 1971 for whatever reason you could have ordered a rear sway bar on a small block in 1971 Corvette base motor or optional LT-1’s.

Ron------

For 1972:

Small block front coil springs without C-60= GM #3931823= broadcast code "HS"

Small block front coil springs with C-60= GM #3931824= broadcast code "HT"

ZR-1 front coil springs= GM #3832518= broadcast code "EA"

Small block & Big block rear spring except ZR-1 (9 leaf)= GM #3850839= broadcast code "EA"

ZR-1 rear spring (7 leaf)= GM #3828811= broadcast code "EB"

I know of no other springs used for 1972 small block.

Actually, for 1972 it was not as simple as the non ZR-1 front springs being determined solely by whether the car had C-60 or not. The small block front springs, either 3931823 or 3931824, were determined by sprung curb weight per wheel. Sprung weight of 702 pounds or less received the 3931823 spring. For sprung weight exceeding 702 pounds the 3931824 was installed. For the most part, but not exclusively, the addition of C-60 caused the sprung weight to exceed 702 pounds. However, a convertible with C-60 and NO other options would have had a sprung weight of 701.5 pounds and should have received the 3931823 springs. By the same token, an otherwise heavily optioned coupe or convertible without C-60 would have exceeded 702 pound sprung weight and would have received the 3931824 springs. So, while C-60 was a primary determiner of front coil springs, for 1972 and later it was not the sole determiner.

Also, I am unaware of a rear sway bar option for 1971 small blocks. Through 1974 the rear sway bar was part of all big block options, not part of any suspension option and, as far as I know, not otherwise available. I have heard that some ZR-1's have been found with the bar but, if they were actually factory-installed, I think it was some kind of factory mistake.

[Anthony F.]

Re: 1972 LT-1 Front and Rear Spring Option

Joe, thanks for clearing that up. So for my low option LT-1 coupe (C-60, radio, and power windows), someone determined that combination was > 702 pounds, so I got the "HT" springs (option # 2VF62HT, not 2VF62HI).

[Joe L.]

Re: 1972 LT-1 Front and Rear Spring Option

Joe, thanks for clearing that up. So for my low option LT-1 coupe (C-60, radio, and power windows), someone determined that combination was > 702 pounds, so I got the "HT" springs (option # 2VF62HT, not 2VF62HI).

Anthony-----


There was no "HI"-coded spring that I am aware of.

[Anthony F.]

Re: 1972 LT-1 Front and Rear Spring Option

Yup, my Order Copy is totally legible except for that one spot!

[Ron G.]

Re: 1972 LT-1 Front and Rear Spring Option

Joe - I knew of a 1971 LT-1 that I seen in Fort Lee, NJ that had a factory installed rear sway bar. I cannot remember if it had an F-41 suspension because it was so long ago. It more than likely did not have the optional ZR-1 suspension, but I am confident that the rear sway bar was a factory installed component. - Ron

[Joe L.]

Re: 1972 LT-1 Front and Rear Spring Option

Joe - I knew of a 1971 LT-1 that I seen in Fort Lee, NJ that had a factory installed rear sway bar. I cannot remember if it had an F-41 suspension because it was so long ago. It more than likely did not have the optional ZR-1 suspension, but I am confident that the rear sway bar was a factory installed component. - Ron

Ron------


Well, I'd say it was a factory mistake.

One thing to keep in mind: all 1963-74 small blocks, except F-40/F-41, used a 3/4" front stabilizer bar. The only rear stabilizer bars available for Corvettes in the 1963-74 period were 9/16". The 3/4" front bar was not designed to be used with a 9/16" rear bar and, to my knowledge, GM never intentionally paired these two bars.

For 1975-82 things changed. For Corvettes with FE-7 suspension a 1-3/32" front bar was used in conjunction with a 7/16" rear bar.