[kobra_428]

Ok....I want to replace the auto trans on '86 5.0 with a manual. what flywheel do I need. I know that there are 28 oz. balanced and 50 oz. balanced flywheels. I have 2 flywheels but not sure what they are, they are double marked. #1 has C6AE-6380-C cast in the center and has E0TE-BE stamped in it as well . It has no noticable bulges or offset counter weights.
#2 has C5AE-6380-E cast in the center and has C7TE-A stamped on it. The big differance is a sizeable counter weight cast into to center.
Which date code is right. will either of these work for me? why are they bothe double stamped?
thanx fer yer help
-kobra

[ScoTFrenzel]

If you have a 5.0 (one piece rear main seal= 50 oz balance) then neither will work.
Both are 28 oz balance.
All SBF, W and C, were 28 oz with 2 piece seals.
The newest number you have is E0TE which is 1980.

Also the front dampers are different balance also. Either 28 or 35 and must match the crankshaft.

Most accepted modern nomenclature/vernacular indicates that a 302 is a 28 oz heavy weight crankshaft with two piece seal,

and a 5.0 is is a 50 oz balance light weight crankshaft with a one piece seal which was introduced for 1982.

[kobra_428]

after a talking with a friend, I belive #1 is a 300 flywheel. 0 balance.