Hi all, with 164 tooth flywheel I find there are two different style separation plates, the plate between the bell housing and the engine block. Please see the attached image. Does anyone know why the two different styles? Is one early one late? Is one San Jose and the other Dearborn? The plate on the right has part number C5AE-6A373-C. I'm working on a 68J Code 4 speed conversion. Is one of these plates more appropriate?
Thanks
Cory
I can confirm the solid separation plate was used on at least the early J code engines.
Car 0006 built in Nov of 1967 had this style of plate. (Information provide by the original owner)
The solid one is all I've ever seen on 65-68 manual trans cars. Does the starter hole measure the same on both? Looks like the one on the right might be interchangeable otherwise.
Quote from: 6s1640 on July 18, 2025, 08:48:46 PMHi all, with 164 tooth flywheel I find there are two different style separation plates, the plate between the bell housing and the engine block. Please see the attached image. Does anyone know why the two different styles? Is one early one late? Is one San Jose and the other Dearborn? ...................
The plates were installed on manual transmission engines because the flywheel and bell housing were installed at the engine plant before they were shipped. So wasn't a San Jose verses any other car assembly plant thing.
Agree solid one if you want to be correct
Just because were discussing the details - does the plate have a date code also?
Hi all,
The two plates are interchangeable and both work with the 164 tooth flywheel and bellhousing. The starter holes are identical. Neither has a date code. Only the one has a part number. My copy of the MPC might be missing some pages, but the base number will be 7007 according to the illustrated part of the MPC. I can not find in the MPC. My MPC stops at page 16 in Section 60.5 for 302 and 302 SPEC. The lowest part number is 6894 before it goes to section 60.5A (351 etc.) I can't get to the 7007 part section. Any body have a more complete MPC?
In the attached image, the upper flywheel and Cobra Scatter Shield is 157 to flywheel. The lower one is 164 tooth in a larger bellhousing. Both Bellhousing's were bolt to a six bolt 289/302. If I want to go with the COBRA scatter shield on a 302, I will need to use the smaller flywheel and a different separation plate.. Both have the 28.2 oz imbalance. I'm just trying to understand the mix of parts and what goes together. The 164 tooth plate will not fit on the COBRA scatter shield.
Thanks for your input
Cory
Quote from: 6s1640 on July 19, 2025, 08:47:33 PMHi all,
The two plates are interchangeable and both work with the 164 tooth flywheel and bellhousing. The starter holes are identical. Neither has a date code. Only the one has a part number. My copy of the MPC might be missing some pages, but the base number will be 7007 according to the illustrated part of the MPC. I can not find in the MPC. My MPC stops at page 16 in Section 60.5 for 302 and 302 SPEC. The lowest part number is 6894 before it goes to section 60.5A (351 etc.) I can't get to the 7007 part section. Any body have a more complete MPC?
In the attached image, the upper flywheel and Cobra Scatter Shield is 157 to flywheel. The lower one is 164 tooth in a larger bellhousing. Both Bellhousing's were bolt to a six bolt 289/302. If I want to go with the COBRA scatter shield on a 302, I will need to use the smaller flywheel and a different separation plate.. Both have the 28.2 oz imbalance. I'm just trying to understand the mix of parts and what goes together. The 164 tooth plate will not fit on the COBRA scatter shield.
Thanks for your input
Cory
Just remember that with the 157 flywheel you do not want to use the stock 164 68 starter. You want the stock 65-67 small block starter that is made for the 157 flywheel if you do not want starter tooth engagement issues.
Hi Bob, thank you for that advice. I had not done my homework on the starter yet, so this is a big help. That would have been bad to use existing starter, I assume with 164 tooth automatic flex plate, on 157 tooth flywheel.
Take care
Cory
Quote from: 6s1640 on July 20, 2025, 12:07:44 AMHi Bob, thank you for that advice. I had not done my homework on the starter yet, so this is a big help. That would have been bad to use existing starter, I assume with 164 tooth automatic flex plate, on 157 tooth flywheel.
Take care
Cory
Yes the nose on the starter is different between the 164 and 157. It is best not to mix the two.