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Author Topic: Where does the Trans. Vacuum Line go to on my 307 2 BBL. ...?  (Read 1561 times)
jcoriginal
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« on: February 03, 2010, 04:12:50 AM »

Where does the Transmission Modulator Vacuum Line connect to after it leave's the Modulator..?
Here's the stat's on the car:
69 Camaro 307....with a 2 BBL. Rochester 2GV Carburator....NO air...NO power brakes...the standard, no option basic Camaro.
Oh yes, the Modulator is on the "right" side of the 350 Turbo Hydromatic Transmission.
Thanks...Judy  Roll Eyes
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BlackoutSteve
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« Reply #1 on: February 03, 2010, 04:30:55 AM »

Do you have the Assembly Manual?
See RPO M38-A3 (pg 157)
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Restoring my RHD 69 Jane in Melbourne, Australia.
http://www.usmuscle.com.au/Forum/showthread.php?t=2840
jcoriginal
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« Reply #2 on: February 03, 2010, 05:47:29 AM »

Thanks for the quick reply !....I do have that in the factory 1969 "Assembly Instructions" Manual M38-A3 (page 359). I think that's a larger engine. Series 12000.
Were looking at the same Manual but in a different format I suppose i.e. page number's differing, but same material.
The 1969 blue "Motor Manual" show's it going into a front port of the carburator just below the fuel line titled" spark advance & modulator vacuum port".
There is a second heat & vacuum port at the rear of the carburator as well, however, that is not shown.
Has anyone out there actually connected this Modulator Vacuum line to the Carburator with a "T" and hose's?..or, are you running the 2BBL vacuum out of the intake manifold..?
I had been informed the intake manifold 3/8" vacuum port was ONLY for the power brake option...and to provide the needed vacuum to the brakes, otherwise, it was plugged.
I don't have power brakes.
I realize this may be a harder question, as I'm one of the few out there, probably, that still has a factory Norwood application 2BBL on a little standard 307, with no options.  I wish to bring it back to factory specs. Most people, I'm informed, build their 69's up with 4 BBL's..totally different.
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tmodel66
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« Reply #3 on: February 03, 2010, 09:47:18 AM »

I have always used the port on the back of the carb.
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Daniel  
'69 SS 350/4 speed  Fathom Green--POP
JohnZ
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« Reply #4 on: February 03, 2010, 03:16:04 PM »

Thanks for the quick reply !....I do have that in the factory 1969 "Assembly Instructions" Manual M38-A3 (page 359). I think that's a larger engine. Series 12000.
Were looking at the same Manual but in a different format I suppose i.e. page number's differing, but same material.

The installation shown in the Assembly Manual on M38, sheet A3 is correct, using a fitting in the intake manifold as shown. "Series 12000" refers to the Camaro - it's on every sheet in the manual; has nothing to do with what engine the car has.
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'69 Z/28
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chucks
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« Reply #5 on: February 17, 2010, 08:35:16 PM »

i have a oraginal rs 307 and the trans vacume goes into manifold behind carb
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