News:

SAAC Member Badges are NOW available. Make your request through saac.memberlodge.com to validate membership.

Main Menu

Connecting rods part number for GT500?

Started by Kyle, July 30, 2022, 02:44:35 PM

Previous topic - Next topic

Kyle

Hi All,

What are the correct Assembly Line part number on the connecting rods for early 67 Shelby GT500 please?

Kent

From my knowledge and what I have seen in the years C6AE-D with the 19/32 nut.
SAAC Member from Germany and Owner of a unrestored 1967 Shelby GT500, 1968 1/2 Cobra Jet´s and some nice Mustang Fastback´s 67/68

Kyle

I am seeing that there are C6AE-C and C7AE-B as well.
I never saw C6AE-D?

Royce Peterson

The ones I have taken apart had C7AE-B rods with big bolts like any 428 would have. Same basic rod as a 390, just has the bigger bolts.
1968 Cougar XR-7 GT-E 427 Side Oiler C6 3.50 Detroit Locker
1968 1/2 Cougar XR-7 428CJ Ram Air C6 3.91 Traction Lock

Kyle

Quote from: Royce Peterson on July 31, 2022, 12:34:06 PM
The ones I have taken apart had C7AE-B rods with big bolts like any 428 would have. Same basic rod as a 390, just has the bigger bolts.


On early 428's you found C7AE-B please?

shelbydoug

#5
C6AE-C engineering number cast into the rods.

It's got the small bolts and really is just a 390 rod.

If you are rebuilding use a better aftermarket rod.


The C7AE-B is a service substitute. I had one set where they were mixed.
68 GT350 Lives Matter!

Royce Peterson

Quote from: Kyle on July 31, 2022, 02:42:22 PM
Quote from: Royce Peterson on July 31, 2022, 12:34:06 PM
The ones I have taken apart had C7AE-B rods with big bolts like any 428 would have. Same basic rod as a 390, just has the bigger bolts.


On early 428's you found C7AE-B please?

On '67 Shelby 428's. 1966 428's I have had a couple blocks that were stripped before I bought them so no idea there.
1968 Cougar XR-7 GT-E 427 Side Oiler C6 3.50 Detroit Locker
1968 1/2 Cougar XR-7 428CJ Ram Air C6 3.91 Traction Lock

Kyle

Still not shure what were they from factory?
C6AE-C or C7AE-B on a 428 cast date 1966 September?

shelbydoug

Quote from: Kyle on October 09, 2022, 02:53:50 PM
Still not shure what were they from factory?
C6AE-C or C7AE-B on a 428 cast date 1966 September?

It could be either depending on the build date. C7's probably don't start showing up until April or May of '67 but no one that I know of has attempted to document that.

The most significant weak spot in the engine is the connecting rod. Some think that 652cfm carbs v 715's were done because of the bad rods and to "keep them from coming through the side of the block".

No one starting from a scratch build is going to use the stock rods.
68 GT350 Lives Matter!

TA Coupe

What did the carbs have to do with them blowing up?

         Roy
If it starts it's streetable.
Overkill is just enough.

J_Speegle

#10
Quote from: Kyle on October 09, 2022, 02:53:50 PM
Still not shure what were they from factory?
C6AE-C or C7AE-B on a 428 cast date 1966 September?

Based on my records and the examples I've documented - C6AE-C
Jeff Speegle- Mustang & Shelby detail collector, ConcoursMustang.com mentor :) and Judge

430dragpack

Quote from: J_Speegle on October 09, 2022, 07:06:01 PM
Quote from: Kyle on October 09, 2022, 02:53:50 PM
Still not shure what were they from factory?
C6AE-C or C7AE-B on a 428 cast date 1966 September?

Based on my records and the examples I've documented - C6AE-C

Do you have notes on large rod bolts or small?

shelbydoug

#12
Quote from: TA Coupe on October 09, 2022, 05:36:20 PM
What did the carbs have to do with them blowing up?

         Roy

Just something that Randy said to me about limiting the potential rpm of the engines by limiting the carb capacity. I had never thought about it in that way before.

The quote is something like, "to keep the rods from sticking through the block, they limited the size of the carbs".  ;)
68 GT350 Lives Matter!

Kyle

Quote from: J_Speegle on October 09, 2022, 07:06:01 PM
Quote from: Kyle on October 09, 2022, 02:53:50 PM
Still not shure what were they from factory?
C6AE-C or C7AE-B on a 428 cast date 1966 September?

Based on my records and the examples I've documented - C6AE-C


Thanks a lot.

Kyle

Quote from: 430dragpack on October 09, 2022, 09:36:47 PM
Quote from: J_Speegle on October 09, 2022, 07:06:01 PM
Quote from: Kyle on October 09, 2022, 02:53:50 PM
Still not shure what were they from factory?
C6AE-C or C7AE-B on a 428 cast date 1966 September?

Based on my records and the examples I've documented - C6AE-C

Do you have notes on large rod bolts or small?

I have the same question ?