1964 327 300Hp Throttle Linkage

[M W.]

I have been searching archives and any photo's possible and I continue to see 64 cars with duel throttle linkage set ups and I would like to know for certain if what is pictured in the photo is accurate or an add on? Note the photo is stock picture and is only used as a reference.

Thanks so much for your help.

Regards,
Craig
#36551

[Verle R.]

Re: 1964 327 300Hp Throttle Linkage

Any automatic (powerglide) car will have a second rod from the bottom of the carb that connects through linkage to the transmission to control shift points.

Verle

[Tim E.]

Re: 1964 327 300Hp Throttle Linkage

To add to what Verle answered, here's a picture of the linkage on a 300hp 66 with manual transmission.....

[Duke W.]

Distributor installation???

I'm not quite sure due to the photo angle, but it appears that your distributor may not be installed properly. If the plane of the window is not near normal to engine centerline (and the VAC is abutted to the manifold or nearly so) the distributor is installed off a tooth or the gear could be installed 180 degrees out from proper indexing, which is a common problem (The dimple should point in the same direction as the rotor tip.). Often in this case the plug wires are also not properly indexed to the cap; #1 should be in the position closest to the RH (pass. side) edge of the window.

Improper installation may not allow the initial timing to be set within the OE recommendation or the ideal amount.

I've seen a number of misinstalled distributors in Flight judging, but most judges miss it because it's not in the JGs.

Duke

[Tim E.]

Re: Distributor installation???

Thanks Duke, I'll bet you're right and I have it installed wrong. I'll pull the distributor this weekend and see. Thanks for pointing that out, Tim.

[Duke W.]

Re: Distributor installation???

Before you pull the dist. set #1 at the OE recommended initial timing point (balancer slot aligned with that value on the tab) for your engine, which is probably about 6-8 degrees.

Pull out the dist. and verify that the dimple is pointing in the same direction as the rotor and reorient if necessary.

Verify that the wires are correctly indexed as per my previous post. Also see your CSM.

Prior to installation orient the rotor about 45 deg. to the right of a normal to the plane of the window. Note the orientation or the oil pump drive on the bottom of the gear and look down the hole to check if the slot is properly oriented to engage. A paint mixing stick is a good tool to rotate it if necessary.

Drop the dist. down with the rotor oriented as above and wiggle back and forth a bit as it engages the pump drive. If the dist. base won't drop down to the manifold, tweak the pump drive slot as required.

Once the dist. is seated rotate the housing until you observe the points just begin to open, then back a hair. The window should be near normal to engine centerline and the timing should be within a couple or degrees of where the balancer slot is set on the timing tab.

Complete the assembly, start engine, and check and adjust intial timing as required.

Duke

[Tim E.]

Re: Distributor installation???

I'll bet I have the driven gear installed with the dimple pointing the wrong way. Here's another photo that I had from a different angle. Duke - Can you tell from this one if the access window is oriented properly? Should the window be exactly perpendicular to the centerline of the engine? When I compare this to the photo on Lars' article, it looks pretty close.

Thanks for your help, Tim

[John D.]

Re: Distributor installation???

Duke, Just printed your info on installation of a distributor. I think a lot of guys should print it also.
Thanks for the info as it will save wear and tear on my vocal cords with all the phone calls I get. John

[Duke W.]

Re: Distributor installation???

It looks a little better in that photo, but, again, I'm not sure. The window should be within a few degrees of normal to engine centerline for typical initial timing values of 4-14 degrees, which is a total of 5 degrees of distributor rotation.

The other "check" is that the VAC should be somewhere near midway between the interference points with the coil bracket or inlet manifold. If it's butting up or near either one with the timing set in the above range, there is likely a problem with the dist. installation.

Yours might be okay. I just can't be sure from the photo angles.

Duke

[Duke W.]

Re: Distributor installation???

If I hear one more guy say to put #1 at TDC to remove or install the dist. I'm going to puke!

The reason I instruct to set the engine at the initial timing point is so that the distributor can be static timed at something very near the correct initial timing point upon distributor installation, which will allow the engine to start right up.

In fact, if your end play is shimmed up to the two to seven thous spec I can get it dead nuts on.

Moving the engine to the proper indexing with a manual trans is as simple as putting the trans in top gear and just pushing the car until the balancer slot it aligned with the intial timing point on the tab. On SHP/FI engines you can also turn the balancer center bolt to index the engine.

It's a little tougher with PG.

Whenever I remove a distributor (whether it's assembled/wires indexed correctly or not) I always set #1 at the initial timing point and pull the #1 plug to check for compression if I have ANY doubt as so many distributor installations are bubbaed up.

Once I've verified that the dist. is properly assembled, including wire indexing the procedure is positively, guaranteed to result in instant start up with the timing very close to the target valve.

Also note that the final distributor orientation (plane of window near normal to engine centerline) applies to C1 and C2 small blocks. I'm not sure about C2 big blocks, but I think they are the same.

And remember that C3s have different distributor orientations. As always, see the applicable service manual.

Duke

[Gerard F.]

Correct position for a 67 327/300

Tim,

The picture above and shown below is my 67 base engine (300 HP) with its original distributor, rotor lined up with the dimple, and timed at 6-8 BTDC.

When I refurbed my distributor, I followed the example of a replacement I took off, which had the dimple reversed. Here's what it looked like with dimple reversed and same timing as above:


Kinda looks like yours.

The difference is one half of a gear tooth, about 14 degrees, or 360/(2 X 13).
This is for a 67 with manual transmission, yours might be slighly different.

If you had powerglide, the reverse dimple would probably be a necessity, as this the minimum advance I could go with the dimple lined up is about 5-6 degrees BTDC before hitting the coil.

Thanks to Duke and others, I think I finally got it right.

Jerry Fuccillo
#42179

[Tim E.]

Re: Correct position for a 67 327/300

Jerry & Duke - You're right...Jerry's second picture is a perfect match with the way mine is currently oriented so I'm sure "my dimple is reversed". This will be a perfect time to fix it since I have the shielding off and I just got a shipping notice that my wiper motor is on it's way. It'll be far easier to reinstall the wiper motor without a distributor in the way! Thanks guys, Tim