Author Topic: Q? 12-bolt 3.07 rearend came with what engine/trans combo  (Read 1739 times)

77thor

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Q? 12-bolt 3.07 rearend came with what engine/trans combo
« on: January 21, 2018, 07:09:06 PM »
I've been trying to figure out the possible engine/trans combos that my 69 may have been built with...
the car has the original rearend (Axle code: BR 1206G1, Line2: E, Casting: 3894860NF) Read: 12-Bolt Posi 3.07
But the engine/trans are non-original.
And I know it is was originally a manual transmission car(clutch/brake pedals).

So, assuming the 3.07 gear ratio was standard and not an option...
What engine/trans combos would have been possible?

1969 Camaro SS, 350(NOM), M21, 12 Bolt Posi, 01B LOS Build
1977 Camaro, 350(LM1), M20, 10 Bolt Posi, Purchased New, (SOLD)

Spooky

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #1 on: January 21, 2018, 11:20:35 PM »
Where does the speedo cable come out of the firewall? If it comes out under the fuse box area it is a lower performance model like a 307/200hp Higher performance model muncies, come out to the side of the throttle lever (Left side looking at the firewall, right side of the car)

68 Ragtop

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #2 on: January 22, 2018, 06:20:41 PM »
I've been trying to figure out the possible engine/trans combos that my 69 may have been built with...
the car has the original rearend (Axle code: BR 1206G1, Line2: E, Casting: 3894860NF) Read: 12-Bolt Posi 3.07
But the engine/trans are non-original.
And I know it is was originally a manual transmission car(clutch/brake pedals).

So, assuming the 3.07 gear ratio was standard and not an option...
What engine/trans combos would have been possible?



L35 (396/325) with 3 or 4 speed.

77thor

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #3 on: January 22, 2018, 06:58:23 PM »
Where does the speedo cable come out of the firewall? If it comes out under the fuse box area it is a lower performance model like a 307/200hp Higher performance model muncies, come out to the side of the throttle lever (Left side looking at the firewall, right side of the car)
It comes out to the side of the throttle lever.
1969 Camaro SS, 350(NOM), M21, 12 Bolt Posi, 01B LOS Build
1977 Camaro, 350(LM1), M20, 10 Bolt Posi, Purchased New, (SOLD)

77thor

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #4 on: January 22, 2018, 07:01:27 PM »
Quote
L35 (396/325) with 3 or 4 speed.
Curious... Where did you find that info?

Also, I don't think my Camaro would have had a BBC because of the heater core in/out location.
1969 Camaro SS, 350(NOM), M21, 12 Bolt Posi, 01B LOS Build
1977 Camaro, 350(LM1), M20, 10 Bolt Posi, Purchased New, (SOLD)

bertfam

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #5 on: January 22, 2018, 07:35:04 PM »
If it's a small block heater box, the rear end is original and the Muncie hole is original, then the car started life as either an LM1 (if the car was built before January 1st, 1969) or an SS 350. However, the 3.07 ratio was the optional "Economy" ratio, not the "Standard" ratio on both engines. The standard ratio for the 1969 LM1 and L48 with the Muncie M20 was the 3.31 non-posi.

Ed
Ed "Bert" Bertrand
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77thor

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #6 on: January 22, 2018, 10:02:26 PM »
OK, thanks.

Is there a list compiled that shows all the standard gear ratio's for each engine/trans combo??
I was looking for one but never found one.
1969 Camaro SS, 350(NOM), M21, 12 Bolt Posi, 01B LOS Build
1977 Camaro, 350(LM1), M20, 10 Bolt Posi, Purchased New, (SOLD)

bertfam

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #7 on: January 22, 2018, 10:11:42 PM »
Quote
Is there a list compiled that shows all the standard gear ratio's for each engine/trans combo??

Yes, it's called the Camaro Power Teams chart and it's in most of the dealer literature. It's also in the Camaro Reference book by John Hooper.

Ed
Ed "Bert" Bertrand
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1969Z27

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Russ 
68 RS LS6/M40
69 SS L48/MC1

KurtS

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #9 on: January 22, 2018, 11:39:56 PM »
I have one generated. It needs proofed (it's complicated and it changes during the year) and I need to figure out how I'm posting it (*not* a html table).
Kurt S
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68 Ragtop

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #10 on: January 23, 2018, 01:46:08 PM »
Quote
L35 (396/325) with 3 or 4 speed.
Curious... Where did you find that info?

Also, I don't think my Camaro would have had a BBC because of the heater core in/out location.


Every year had a different Power Team Chart that showed what engine, transmission, and other options like AC would come with as standard, performance, economy, or available as special order.

They are hard to find online, but almost all the old school pre internet fact/data books have them. I am surprised CRG does not have that information published, but sounds like they are working on it.

It was in some dealer sales brochures that you can find online. Here is a link to one:

https://myclassicgarage.com/marketplace/knowledge_base/1969-chevrolet-camaro#drivetrain

bcmiller

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #11 on: January 23, 2018, 04:55:15 PM »
I have one generated. It needs proofed (it's complicated and it changes during the year) and I need to figure out how I'm posting it (*not* a html table).


How about as a pdf ?
Bryon / 1968 Camaro SS 396 coupe - now 468 cubic inch BBC/M21
67 RS/SS 396 coupe L35/M40 - 4 generation family project
Looking for 68 Camaro with body # NOR 181016

KurtS

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #12 on: January 24, 2018, 06:35:10 AM »
I know how to make pdf's. The issue is the data isn't easy to present completely.
Kurt S
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ZLP955

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #13 on: January 24, 2018, 11:25:40 AM »
Look on page 11.
https://gmheritagecenter.com/docs/gm-heritage-archive/vehicle-information-kits/Camaro/1969-Chevrolet-Camaro.pdf
Interesting that document does refers to Z/28 here and there, but has nothing on the 302 in the drivetrain specs.
Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3 bumper, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA. Ex-E/MP at Lions Dragstrip in Long Beach.

69Z28-RS

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Re: Q? 12-bolt 3.07 rearend came with what engine/trans combo
« Reply #14 on: January 24, 2018, 02:29:45 PM »
I noticed that also.  My suspicion is that it wasn't listed in the 'engine options', because the 302 was not an engine option; instead it was *part* of the Z28 performance option (including many other parts and requirements beyond the engine).
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan