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09-14-2011, 03:53 PM
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#1 |
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Registered User
Join Date: May 2006
Location: Canada
Posts: 50
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flywheel
I have a 402bb and was wondering if i took the flywheel from my sb would it bolt up to the tranny that is in truck.it is a 3 speed manual saginaw.thanks
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09-14-2011, 03:56 PM
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#2 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Re: flywheel
Yes as long as the small block is not a 400, or a 1986 or newer.
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig |
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09-14-2011, 04:04 PM
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#3 |
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Registered User
Join Date: May 2006
Location: Canada
Posts: 50
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Re: flywheel
crap the block is 1992 whith 1979 heads.
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09-14-2011, 06:34 PM
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#4 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: flywheel
flywheels dont bolt to trannys
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09-14-2011, 08:36 PM
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#5 |
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Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,280
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Re: flywheel
If it is a 92 it probably a 454 and they are externally balanced so the small block flywheel won't work. Help a guy out here I'm not backward on this am I guys? 396 -402 427 internal balance 454 external , right?
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09-15-2011, 07:25 AM
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#6 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Re: flywheel
The 92 block he mentioned is his 350, I believe. He stated his big block is a 402.
You are correct. all small blocks are internally balanced, except the 400. All big blocks are internally balnced other thant the 454. All small blocks after 1986 used a one piece rear main, have a different flange and bolt pattern for the flywheel/flexplate.
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig |
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09-15-2011, 10:37 AM
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#7 |
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Registered User
Join Date: May 2006
Location: Canada
Posts: 50
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Re: flywheel
So if it has different bolt pattern,not saying it doesent but if bolts up to the origanal 3 speed transmission it wont work then,or is it just the motor 402 that it wont bolt to.
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09-15-2011, 10:48 AM
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#8 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Re: flywheel
Its not the bolting to the trans thats the difference. As stated, flywheels dont bolt to the trans.
It is an issue with connecting to the crankshaft and providing proper balance of the engine. The wrong balance flywheel will quickly destroy an engine. All small block and big block chevys have the same bolt pattern in regards to the bellhousing, or the trans to engine connection.
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig |
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09-15-2011, 11:04 AM
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#9 |
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Registered User
Join Date: May 2006
Location: Canada
Posts: 50
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Re: flywheel
did not really meen bolt to trans,ment it is bolted to the cluch
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09-15-2011, 11:08 AM
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#10 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Re: flywheel
Clutch may bolt up. There are 2 bolt patterns for clutches depending on the size. Thats not a big concern, again the big concern is balance of the engines rotating assembly.
As stated, if the small block is a 1986 or newer, there is no way it will work on a 402 big block chevy. If the flywheel was off a 1985 or older small block, other than a 400, it will be fine.
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig |
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09-15-2011, 11:19 AM
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#11 |
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Registered User
Join Date: May 2006
Location: Canada
Posts: 50
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Re: flywheel
thank you,thank you very much
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09-15-2011, 12:44 PM
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#12 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Re: flywheel
Hope I cleared things up for you!
 Good luck with that big block!
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig |
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