SAAC Forum

You need to buy real Holley needle / seat assemblies. Got to https://www.summitracing.com/parts/hly-6-504

The ones like you show in your picture have a tiny drilled round hole that causes fuel starvation. Real Holley needle / seats have a huge square window in the same area that is machined.

NAPA has a Fathers Day promotion that gives a discount for online orders. Use order code NAPADAD and you can get the Group 24F sealed 460 CCA battery for $108.99 https://www.napaonline.com/en/p/NBP6524F?partTypeName=Battery+-+Automotive&keywordInput=battery+24f

The Legend Group 24F is about $30 more even with the discount code. Still a good battery for the price.

Quote from: gt350bp on June 14, 2020, 07:06:21 PM
I just bought a NAPA Legend Premium for my 68 KR and it works well for the heat shield and Autolite topper. I think it has one of the best cranking ratings and has a black case. About $100.

Don
gt350bp

The C6 LH manifold won't fit Mustangs or Shelbys. It hits the steering box. Only fits Comet / Fairlane.

The C7 version was reworked so it fits Mustang / Cougar / Fairlane / Comet.

Quote from: GT500-0314 on June 08, 2020, 08:34:32 AM

Quote from: shelbydoug on June 07, 2020, 12:46:28 PM
The engineering number and date code would mean it's a '68 model year. They are physically the same.

If not I don't know what the difference is. Generally a change in engineering number for what seemingly is the same part indicates a change in design of some sort.

Hi,
    The seller claims that the C7 has a slightly different angle for the H-pipe for the Mustangs. I've never heard
that before? I thought the C6 and C7 would be physically the same as you say.

Great looking car. Other than the usual reproduction parts I don't see any issues. Most folks would like the addition of factory air and the bluetooth stereo.

If it is original it will look like this one -

https://www.deadnutson.com/1967-68-mustang-shelby-master-cylinder-with-cap/

If it is indeed the original one it can be rebuilt either by you or someone else.

Quote from: hurlbird on June 07, 2020, 06:07:45 PM
opened it up today and it is rusted and empty... I assumed the rear would be since im working on that section of the car. Looks really bad in the cylinder. So what are you guys doing in these cases to keep original? I assume this one is the original but I will need to confirm. Thanks once again! -John

Sent you a PM.

+1 totally agree. The NOS hoses look very much like that hose except the ink stamps on NOS hoses are often much weaker and smudged. Also the ink stamp on NOS hoses could be facing the ground or on the very top. Ford didn't care - it was a radiator hose, not a chrome badge on the outside of the car.

Quote from: Bob Gaines on June 03, 2020, 10:54:22 PM

Quote from: 68krrrr on June 03, 2020, 07:29:08 PM
I wasn't real happy with my hose set that I ordered from Marti the ink seems to be smudged and a hose is kind of got a ribbed finish, and the pictures I've seen of other peoples cars the hose is smooth and the print is clear & not smudged because of the ribs, I ordered these ones directly from Marti  and then I ordered another set from another source and they were both exactly the same.

The texture on your hose looks fantastic to me but then I search far and wide for original assemblyline texture like that at swap meets etc. You can make up a stamp with enough patience and accurate artwork but it is the texture hose that is hard to find. The smooth look is typically the tell tale sign of a later repro or replacement hose. The texture was considered a "undesirable effect" back in the day and steps were taken to make them more smooth. The ink stamps on mass produced hoses ,coils,early starters etc. were often smudged more times then they were not.

I have had Holley carburetors where the engine would not idle down caused by excessive wear on the throttle shafts and throttle body. In most cases you can find a complete new baseplate / with shafts and butterflies etc brand new from Holley. Others can be repaired by making bushings for the plate and using new shafts.

There are so many different things that can cause this sort of problem. Normally you can send the carbs to an experienced rebuilder (Joe Bunetic for example) and they will instantly spot the problem and will fix it as part of normal rebuild procedures.

Quote from: shelbydoug on June 02, 2020, 08:21:37 PM

Quote from: Bill Collins on June 02, 2020, 06:11:10 PM
We had this problem a few years ago and my very astute mechanic traced it to the throttle plates not being properly seated into the bores when the carbs were rebuilt/restored. This prohibited them from fully closing, causing increased idle speed.

He later found the same condition in a friend's GT500. Loosening the throttle shaft screws and manipulating the plates solved the problem in both cases.

TY Bill. I thought I had looked at that already but considering the symptoms the degree of likeliness is rising rapidly.

They are very docile carburetors. Remember they came stock on 427 Fairlanes and Comets. Must be something wrong with yours. Plenty of them were fiddled with by people over the last 50+ years not all of the fiddling was knowledge based. I ran a pair of BC- BD's on a stroked 427 and it idled around 650 RPM in gear with the headlights on. Maybe you have a big vacuum leak?

Quote from: shelbydoug on June 02, 2020, 03:32:11 PM
The primary carb should have a choke. Mine does.

The only thing with those carbs is I can't get them to idle under 1,100 rpm and can't find the problem.

Drew thinks they will idle higher also but his experience is about 1,000.

Actually they are Yates cylinder heads. They were first developed in 1990 and generally available to other Ford Nascar teams in 1991. I don't know when you could buy them as a non - Nascar Ford team owner but I would guess sometime after 1995.

https://roushyatesmfg.com/robert-yates/

Quote from: shelbydoug on May 26, 2020, 06:37:12 AM

Quote from: 98SVT - was 06GT on May 21, 2020, 07:14:14 PM

Quote from: shelbydoug on May 21, 2020, 10:41:09 AM

Quote from: Royce Peterson on May 21, 2020, 10:00:47 AM
The stupid 1990's era Yates 366 under the hood is just so wrong.

+1. I agree.

I would think that they were probably iron GT40 heads? I doubt that all of that braided metallic hose and AN fittings was original either?

You can't claim that you can't find a set either. Curt Voght at Cobra Automotive had a bunch recast.

I would think that it should also be a 2x4 Holley C60A t/a manifold also?

There are a lot of things "wrong" with it. It's more of a "tribute" car then a restoration.

1971 specs says Boss 302 to me

Those heads and intake manifold are not '70s items. More like 1980's "Motorsport" items.

1970 is kind of early for braided metallic hose and AN fittings to be in common use.

It's a nice car but in my view not an accurate restoration.

It doesn't really matter since it isn't for sale and I'm not bickering with the owner over misrepresented details but it would appear that it wasn't built for resale, just for owner satisfaction and there isn't anything wrong with that at all.

In '67 - '68 I was 10 years old and had a paper route. There were two Shelbys on my route. One was a '67 GT350 with AC and automatic in Lime Gold. The other was a '68 GT500 in Lime Green metallic with auto and AC. Both cars had hubcaps. Both cars were parked in the street every night, not in garages. I doubt the owners ever took them to a drag strip. These were affluent men who drove their Shelby Mustang every day to the office. Rain or shine they sat outside. 

What about the swap meet?

I've owned several sets of those BC / BD carburetors. The primary carburetors always came with a choke. 

Quote from: rbarkley on June 02, 2020, 12:37:51 PM
Hey Guys.

I am running a 67 date 427 Side Oiler - MR in my 67 Shelby GT500.   The carburetors are date matched C5AF-9510-BD/BC.  The primary carburetor has a provision for a choke plate, but does not have one installed.  The BC does not have one and is correct from the factory.

Is there an application (67 R code Fairlane or Cobra)  that did not use a choke plate on the primary or has this carb been modified?   What about the primary for the Shelby application BJ/BK. Does it have a choke plate?

Sending the carbs out for complete rebuild and want to know if I should have the choke plate added?

Thanks

Ron

Well there is this......

You can see a 1914 Model T Ford on the left and a 1915 Model T Ford behind the guy in the white shirt. Behind those two is my 1968 W code Cougar GT-E. Two other cars are behind the camera.

Sorry I don't have any record of the part numbers ordered.

Quote from: TOBKOB on May 31, 2020, 12:06:48 PM

QuoteSorry I did not take any pics of the exhaust system. Here's the car in my shop.

What's the other car???

TOB