1967 390 GT (with smog) belt routing help needed

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Don Rush
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1967 390 GT (with smog) belt routing help needed

#1

Post by Don Rush » 18 Oct 2019, 10:58

Anybody have some good pics / diagram of the correct belt routing on a CA DSO 390? This has the 2 shiv alternator pulley and no ac. Trying to get the car letter correct and I rarely get my hands on a 67 with correct smog still in place.
67gtcinamon.jpg
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67gt390.jpg
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Here is what it should look like with AC. Pretty convoluted!

https://secure.cougarpartscatalog.com/c7ae-9b452-a.html

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BossElim69
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Re: 1967 390 GT (with smog) belt routing help needed

#2

Post by BossElim69 » 18 Oct 2019, 12:47

Mine has AC so it doesn’t go around the water pump. Your smog belt pulley will go on the water pump vs ac pump. Water pump will be three grooves. So would just go around the outer groove on both water pump and crank and round the emission pump which will adjust to tighten the belt. My AC pump is removed from the car right now. You should have the same crank pulley as an AC car.
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Re: 1967 390 GT (with smog) belt routing help needed

#3

Post by PacificaXR7GT » 18 Oct 2019, 12:58

Unsure how/if it differs on a 67, but on my 68 GT with power steering and without AC the two alternator belts go around crank and water pump on the two sheaves closer to the engine. The power steering runs on the outermost sheave of the crank pulley. The smog pump runs on the outermost sheave of the water pump pulley.
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preaction
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Re: 1967 390 GT (with smog) belt routing help needed

#4

Post by preaction » 18 Oct 2019, 13:39

Don there is a pic of this set up in a 67 engine assembly manual it also lists the correct pulley engineering numbers.
67 XR7 6.5 liter auto AC tilt pdb ps thermactor vinyl roof console SS wheels lime frost

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Re: 1967 390 GT (with smog) belt routing help needed

#5

Post by preaction » 18 Oct 2019, 13:47

I only have pics of an A/C car.
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67 XR7 6.5 liter auto AC tilt pdb ps thermactor vinyl roof console SS wheels lime frost

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Re: 1967 390 GT (with smog) belt routing help needed

#6

Post by J_Speegle » 18 Oct 2019, 14:14

Don Rush wrote:
18 Oct 2019, 10:58
Anybody have some good pics / diagram of the correct belt routing on a CA DSO 390? This has the 2 shiv alternator pulley and no ac. Trying to get the car letter correct and I rarely get my hands on a 67 with correct smog still in place.
Engine assembly manual reprints have a diagram on page 97. Would post but respecting copywrite

Basically four belts according to the diagram

Thermactor to water pumper - front most section
Alternator to water pump and crank - two inner most on both - duel belts
PS to crank - forward most section

Hope this helps

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Don Rush
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Re: 1967 390 GT (with smog) belt routing help needed

#7

Post by Don Rush » 18 Oct 2019, 15:24

Our confusion on what is seen on page 97 is that the PS pump in no way way aligned with the third groove. It would have to be shimmed out substantially more than what the factory spacer would accomplish.

https://secure.cougarpartscatalog.com/c ... attribs=75

The reason we are piecing this together is that it had an aftermarket ac system on it with 4 grooves on the crank, spacers on the brackets and all sorts of deviations.

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Re: 1967 390 GT (with smog) belt routing help needed

#8

Post by 68 hertz » 18 Oct 2019, 15:37

Possibly the offset like the 80B ?
Randy ,Syracuse NY

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Re: 1967 390 GT (with smog) belt routing help needed

#9

Post by 68 hertz » 18 Oct 2019, 15:52

Sorry ,offset pulley 80B
Randy ,Syracuse NY

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Re: 1967 390 GT (with smog) belt routing help needed

#10

Post by Royce » 18 Oct 2019, 17:56

Yes but larger diameter than the 80B. Don the MPC will list all the pulley diameters. I have a '67 PS pulley, it's an "outie" and the one in your pictures is an "innie" as would be used with AC. An 80B would work it's just not quite as big in diameter as the proper one.

68 hertz wrote:
18 Oct 2019, 15:37
Possibly the offset like the 80B ?
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