'67 427

[Michael S.]

Could someone with a quick reference please tell me if #3828826 is the correct front sway bar bushing for a 400 hp. 427?
Thanks,
Mike

[Joe R.]

Re: '67 427

3828826 is listed w. spec. perf susp, H.D. susp. In other words F41 Suspension

3817573 is listed Exc. Spec Perf Susp

JR

[Michael S.]

Re: '67 427

Thanks Joe. Did all 427 cars come with F41 suspension?
Mike

[Richard M.]

Re: '67 427

Going from fuzzy memory here, I believe all BB's in 1967 required F41 HD suspension. That's why a telltale of a BB car is typically the observation of the rear sway bar and the 7-leaf rear spring. Also a few subtle differences of particular items based on optional engine choices.

One I'm familiar with is the front sway bar. If 390 or 400 HP I recall a ~7/8" diameter bar was used. The 435 HP L71 used a ~15/16" front bar. This may also be true for the L89 but with the use of aluminum heads, which brought the front end weight down, it may have been the 7/8"......I'm not sure. The L88 probably used the 15/16" bar as well. The SB front sway bar was apx 3/4" IIRC.

Rich

[Patrick B.]

Re: '67 427

Thanks Joe. Did all 427 cars come with F41 suspension?
Mike

F41 was an option available on L-71s but most did not have it. 7/8" bar was std on 427s and 15/16" bar came with F41.

[Joe R.]

Re: '67 427

Thanks Joe. Did all 427 cars come with F41 suspension?
Mike

Mike,
No all BB did not have F-41. I'm reading from a 77 parts book. There was a bushing listed for a 66-67 427 special high performance (Except special performance suspension) part number 3871323.
I don't have any updates but Joe L. might be able to check and give you replacement numbers or time of discontinuation if it applies.

Joe

[Richard M.]

Re: '67 427

I may be reading something wrong or something I misunderstood, but re-checking my 1967 AIM where my memory was possibly being triggered this morning.....

Sheet UPC L36 A2:

UPC 3 FRONT SUSPENSION - Assembled same as RPO F41
UPC 4 REAR SUSPENSION - Assembled same as RPO F41

Sheet UPC L71/L68 A2:

UPC 3 FRONT SUSPENSION -- *
UPC 4 REAR SUSPENSION -- *

* -- Asm. same as R.P.O. L36

Sheet UPC L88 A2:

Title - non Illustrated Parts
(RPO K66, M22, J56, C48, G81, F41)

Rich

[Richard M.]

Re: '67 427

I just searched the archives, having difficulty with the boolean search not working right today, but I found this thread.....

https://www.forums.ncrs.org/showthread.php?76584-1967-Corvette-L-71-Suspension&p=473968#post473968

Either my AIM is wrong, or I'm reading wrong.

I see in the Spec Guide, there were 2,198 F41 sold. There were 3,832 L36's, 2,101 L68's, 3,754 L71's, 20 L88's and 16 L89's.

That's 9,723 Big Blocks. So if only 2,198 F41's sold, then there's obviously no match of F41 to all BB's as I thought.

Still confused about the AIM....

Rich

[John H.]

Re: '67 427

Either my AIM is wrong, or I'm reading wrong.

Still confused about the AIM....

Rich

Rich -

This notation in the A.I.M. is an error:

<<Sheet UPC L36 A2:

UPC 3 FRONT SUSPENSION - Assembled same as RPO F41
UPC 4 REAR SUSPENSION - Assembled same as RPO F41
>>

For UPC 3, FRONT SUSPENSION, it should read, "Assembled same as Prod."

The UPC 4 REAR SUSPENSION notation shouldn't be there at all, as the BB differences are already shown in the L36 section (rear stabilizer bar and bolted diff yoke caps).

[Michael S.]

Re: '67 427


Thanks,
Mike

[John H.]

Re: '67 427

Thanks,
Mike

Michael -

F41 always appeared on the window sticker, the tank sticker, and the Car Shipper.

[Richard M.]

Re: '67 427

Rich -

This notation in the A.I.M. is an error:

<<Sheet UPC L36 A2:

UPC 3 FRONT SUSPENSION - Assembled same as RPO F41
UPC 4 REAR SUSPENSION - Assembled same as RPO F41
>>

For UPC 3, FRONT SUSPENSION, it should read, "Assembled same as Prod."

The UPC 4 REAR SUSPENSION notation shouldn't be there at all, as the BB differences are already shown in the L36 section (rear stabilizer bar and bolted diff yoke caps).

Thanks John, I had a suspicion the AIM was wrong and you were going to jump in with the answer.

Appreciated......Rich

[Michael S.]

Re: '67 427

Thanks John,
Mike

[Joe L.]

Re: '67 427

Thanks John, I had a suspicion the AIM was wrong and you were going to jump in with the answer.

Appreciated......Rich

Rich------


Actually, I don't think it matters if it says same as production or same as F-41----both production and F-41 suspensions assemble exactly the same----only the component parts are different.

[Joe L.]

Re: '67 427

Mike,
No all BB did not have F-41. I'm reading from a 77 parts book. There was a bushing listed for a 66-67 427 special high performance (Except special performance suspension) part number 3871323.
I don't have any updates but Joe L. might be able to check and give you replacement numbers or time of discontinuation if it applies.

Joe

JR-----


The GM #3871323 bushing was discontinued without supercession in May, 1978. However, I think the GM #3817573 bushing, which remains available, can be used with no problem. Otherwise, I'd guess that a reproduction of the 3871323 should be available.

By the way, the F-41 bushing, GM #3828826, was discontinued without supercession about 5 years ago.