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Post Info TOPIC: wtb 454 fly wheel 168 tooth


Canadian Poncho Superstar!

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wtb 454 fly wheel 168 tooth


anyone have a nice one?



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A Poncho Legend!

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As in manual flywheel, not flexplate?



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1966 Strato Chief 2 door, 427 4 speed, 44,000 original miles "FAKE_66"



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4SPEED427 wrote:

As in manual flywheel, not flexplate?


 yepper. manual



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is that same as a small block? i bought a brand new one 140 lordco jobber



-- Edited by timbuk on Wednesday 14th of October 2020 09:21:18 PM

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timbuk wrote:

is that same as a small block? i bought a brand new one 140 lordco jobber



-- Edited by timbuk on Wednesday 14th of October 2020 09:21:18 PM


Valid question.  Mark IV 454's are externally balanced, and have a large counterweight on the backside of the flywheel.   I believe small block 400's are also externally balanced, but not sure.     

However, I'm not certain re the later 454's whether they're external or internally balanced.



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The simple answer is yes all 454 both Gen V and VI are externally balance however the flywheel spec changes for the variations and year made as to the counter weights.

I bought mine at Summit and I recommend Summit for this, they offer great performance products under their own name at excellent cost. I went to Summit and got the following tutorial or article on the 454 flywheels, easy to read and very informative:

Click for Flywheel Info 454



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Ray White, Toronto ON

1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

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1973 date code on block



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Gen V - easy to find. check Summit.



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Ray White, Toronto ON

1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

Polo green metallic & tan  - Bowling Green Kentucky 






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73SC wrote:

Gen V - easy to find. check Summit.


 Geez, I thought that would have been a Mark IV 454.



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A Poncho Legend!

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Sure should be with a 1973 date on it.

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so a small block one wont fit that ? 73?

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timbuk wrote:

so a small block one wont fit that ? 73?


It'll fit, but 454's are externally balanced and have a large counterweight on the backside.   Small block flywheels don't have the counterweight, with the possible exception of small block 400's.   Without the counterweight the engine balance is thrown way off.



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Too quick with the typing, boys you are right, its still the easiest to get. Mark IV 1965 to 1990, Gen V 1991 to 1995, GEN VI 1996 to 2001



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1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

Polo green metallic & tan  - Bowling Green Kentucky 






Canadian Poncho Superstar!

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thx for that info clint

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Poncho Master!

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396-402-427 were internally balanced and the externally balanced 454 flywheels wont work on those early blocks, I have a 427 flywheel on my 409. 400 small block and 454 were externally balanced so basically they were the first GM externally balanced flywheels starting in 1970. 168 tooth small block flywheels will work on 396-402-427.

Just to clarify for future readers of this post.

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Canadian Poncho Superstar!

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more good info there don

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a member contacted me with the correct one. Thanx all



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