68 ring & pinion identification.
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
68 ring & pinion identification.
Hi
Can somebody pls tell me the ratio of this ring & pinion set.
Ring P/N 3737957 dated GM 10-67
Pinion P/N 8885944 dated 1 67 1037
The ring has 37 teeth, pinion , I don't know.
I like to know if this could be a 4.11 to 1 set.
Thanks Gunther :seeya
Can somebody pls tell me the ratio of this ring & pinion set.
Ring P/N 3737957 dated GM 10-67
Pinion P/N 8885944 dated 1 67 1037
The ring has 37 teeth, pinion , I don't know.
I like to know if this could be a 4.11 to 1 set.
Thanks Gunther :seeya
Race Director
Joined: Apr 1999
Posts: 10,866
Likes: 717
From: Beverly Hills/Pine Ridge Florida
Re: 68 ring & pinion identification. (WESCH)
I'm no expert on the dates on ring and pinion gears, BUT seems like your ring gear is dated Oct, 67. The pinion gear is dated Jan, 67. Seems like a LONG time between the manufacture of both gears for them to be a "pair" . I would think they would be closer in date. The Jan. 67 pinion would be for a 67 car, while the Oct, 67 ring gear would be for an early 68. Are these a matched set? As others have said, count the teeth on the ring gear, count the teeth on the pinion, and divide, 37/10 = 3.70 and so on. Chuck
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Re: 68 ring & pinion identification. (gtr1999)
Hi
Thanks so far.
Problem is that I don't know the number of teeth of the pinion.
Do all ratios have 37 tooth rings ?
Is it only the pinion changing in tooth number ?
I thought that ring & pinion need to match and therefore both changing the number of teeth.
I did ask the seller to count the pinion teeth and hope this info comes B4 the auction ends.
I will also ask him about the match due to different dates, thanks for the hint.
Gunther
Thanks so far.
Problem is that I don't know the number of teeth of the pinion.
Do all ratios have 37 tooth rings ?
Is it only the pinion changing in tooth number ?
I thought that ring & pinion need to match and therefore both changing the number of teeth.
I did ask the seller to count the pinion teeth and hope this info comes B4 the auction ends.
I will also ask him about the match due to different dates, thanks for the hint.
Gunther
Race Director
Joined: Apr 1999
Posts: 10,866
Likes: 717
From: Beverly Hills/Pine Ridge Florida
Re: 68 ring & pinion identification. (WESCH)
Just checked a 3.08 ring and pinion I have in the basement. Missed the part of your post that answered your question 3710 37 ring 10 pinion is a 3.70 rear. My ring gear is dated 5-73 (May, 1973), my pinion gear is dated 7-3. (July, 1973) BTW, my 3.08 is 37/12 37 ring, 12 pinion. Chuck
[Modified by Chuck Gongloff, 5:45 PM 7/8/2002]
[Modified by Chuck Gongloff, 5:45 PM 7/8/2002]
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Re: 68 ring & pinion identification. (Chuck Gongloff)
Yes, I missed it too.
It actually says 10 to 37, so 3.7 ratio.
I will bit on it as the date even fits to my cars build date.
Always good to have a spare set.
My car actually has a 3.7 rear originally in it.
Thanks for all the help.
So it looks like if only the pinion is changing, ring gear always has 37 teeth.
Gunther :seeya
It actually says 10 to 37, so 3.7 ratio.
I will bit on it as the date even fits to my cars build date.
Always good to have a spare set.
My car actually has a 3.7 rear originally in it.
Thanks for all the help.
So it looks like if only the pinion is changing, ring gear always has 37 teeth.
Gunther :seeya
