The Supercar Registry - 1969 Nova L78 M22 4.88 on Lost Muscle Cars

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The Supercar Registry (https://www.yenko.net/forum/index.php)

- L78/L89 specific Forum (https://www.yenko.net/forum/forumdisplay.php?f=134)

- - 1969 Nova L78 M22 4.88 on Lost Muscle Cars (https://www.yenko.net/forum/showthread.php?t=175911)

Mr.Nickey Nova

06-21-2023 09:40 PM

I believe the 3.55 gears were standard for the L78 Novas. Anything lower, like 4.56 or 4.88 you could order.

Kurt S

06-22-2023 01:15 AM

Quote:

Originally Posted by JoeC (Post 1625298)

For some reason 69 Chevy Nova Power Team charts list the highest number gear ratio as 3:55 with the 375 HP L-78.

I have been looking for any documentation that Yenko some how got the Novas built with the 4:10 gears to save the time and cost of changing the rear gears.

Since the axle was available, they probably just placed the order, it went through the F&SO office, and some 4.10 axles were shipped to the plant.

JoeC	06-22-2023 05:57 PM

1 Attachment(s)

The window sticker shows the COPO number 9511CA

There is a RPO HF8 listed for 4:88 gear ratio but I don't know if that was used in 1969

luzl78

06-22-2023 06:42 PM

Quote:

Originally Posted by WILMASBOYL78 (Post 1625338)

I know where there is a 68 with an M22 :cool2::3gears:

was thinking about your car when i posted.

Mr.Nickey Nova

06-22-2023 09:59 PM

Chevy By The Numbers shows rear axle code for Novas with 4.88 posi as BX.

69hurstSC

11-01-2023 01:27 PM

Are there any other documented L78 '69 Novas with 4.88s?

Salvatore

11-04-2023 02:29 AM

I know a few guys that begged Chevy to let them order something lower than 3.55's but to no avail. I don't think I remember seeing any 69 nova with even 4.10's let alone 56's or 88's. Dealer installed maybe?

JRSully

11-04-2023 01:17 PM

2 Attachment(s)

I had a 69 L78 Nova with a BW (4:56) rear in it. No paper to document, but the cast date (D 11 9)and build date (04 18) were perfectly matched to the TT and original engine cast/build date.

luzl78

11-04-2023 02:45 PM

slicks and those front wheels are off the ground

JoeC	11-04-2023 02:56 PM

I believe some of the Yenko 427 Nova's were ordered with the 4:10 gears using the COPO number 9511 like the car in this thread but have not found paperwork or a POP from one of the cars.

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