swapping transmissions
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Joined: Dec 2016
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swapping transmissions
Building 1978 corvette ,have removed th350 and trying to install saginaw 4 speed.
Original disk was 168 teeth found 168 tooth flywheel but can not find the correct clutch/pressure plat
(no such thing?) Will a fat block clutch work?
Or is it possible to run sbc 153 tooth flywhell and adapt starter?
Thank All of you for any help you can give!
Steve
Original disk was 168 teeth found 168 tooth flywheel but can not find the correct clutch/pressure plat
(no such thing?) Will a fat block clutch work?
Or is it possible to run sbc 153 tooth flywhell and adapt starter?
Thank All of you for any help you can give!
Steve
Pro
Joined: Dec 2015
Posts: 578
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From: colo
Keep the 168 tooth, don't forget the pilot bushing. You need the bellhousing that has the threaded hole for the 'Z' bar of the clutch- unless you are changing to hydraulics, the standard 11.5" clutch and pressure plate, the correct height clutch fork pivot ball, a clutch fork and required rods,along with pedal assembly among other things to switch it over.
You need to know how many teeth your input shaft of the transmission is in order to get the right clutch disc.
Good luck, it is a good learning experience, and 'so much fun' under the dash installing the pedals
You need to know how many teeth your input shaft of the transmission is in order to get the right clutch disc.
Good luck, it is a good learning experience, and 'so much fun' under the dash installing the pedals
Racer
Joined: Feb 2012
Posts: 421
Likes: 27
From: Harrisburg PA
what is the casting number on the bellhousing that you are using?
To use the 168 tooth flywheel, you will need an 11" bellhousing (it'll have a rounded "kick-out" for the starter to mount correctly.
Then, any 11" clutch disc kit with a 10 spline input should work (I think all Saginaw manuals were 10 spline--but I can be wrong)...
If you already have a bellhousing that is not for an 11"clutch, you will need to change to the smaller flywheel, and get a new starter (many aftermarkets come with dual mounting patterns for either 153 or 168 teeth)...as well as the appropriately sized clutch kit.
To use the 168 tooth flywheel, you will need an 11" bellhousing (it'll have a rounded "kick-out" for the starter to mount correctly.
Then, any 11" clutch disc kit with a 10 spline input should work (I think all Saginaw manuals were 10 spline--but I can be wrong)...
If you already have a bellhousing that is not for an 11"clutch, you will need to change to the smaller flywheel, and get a new starter (many aftermarkets come with dual mounting patterns for either 153 or 168 teeth)...as well as the appropriately sized clutch kit.
Last edited by keithl1967; Feb 18, 2018 at 01:33 PM.
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Joined: Dec 2016
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what is the casting number on the bellhousing that you are using?
To use the 168 tooth flywheel, you will need an 11" bellhousing (it'll have a rounded "kick-out" for the starter to mount correctly.
Then, any 11" clutch disc kit with a 10 spline input should work (I think all Saginaw manuals were 10 spline--but I can be wrong)...
If you already have a bellhousing that is not for an 11"clutch, you will need to change to the smaller flywheel, and get a new starter (many aftermarkets come with dual mounting patterns for either 153 or 168 teeth)...as well as the appropriately sized clutch kit.
To use the 168 tooth flywheel, you will need an 11" bellhousing (it'll have a rounded "kick-out" for the starter to mount correctly.
Then, any 11" clutch disc kit with a 10 spline input should work (I think all Saginaw manuals were 10 spline--but I can be wrong)...
If you already have a bellhousing that is not for an 11"clutch, you will need to change to the smaller flywheel, and get a new starter (many aftermarkets come with dual mounting patterns for either 153 or 168 teeth)...as well as the appropriately sized clutch kit.
I have a 10 spline on the transmission And the bell housing number isgm 6263756 and looks like F5 below it.
The bell housing looks like it has a notch on the clutch side (for z bar mount? I will look for a 11 inch clutch and assume trhe plate will fit my bigger flywheel?
Thanks,
Steve
Racer
Joined: Feb 2012
Posts: 421
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From: Harrisburg PA
The "756" is a truck bell housing, if i recall correctly. That means that while it will house a 168 tooth flywheel and 11" clutch, the pilot hole is intended for a truck transmission, with a bearing retainer neck of 5 1/8"...Car transmissions have a neck of 4 5/8".
you will need either an adapter ring to make that bell housing work, or you will need a different bell housing altogether-I would recommend the latter.
If the parts are currently not in the car, try a "test fit of the bell to the trans and se eif it works...if the hole is too large, you will end up with transmissiont/clutch alignment issues and burn through parts like crazy.
you will need either an adapter ring to make that bell housing work, or you will need a different bell housing altogether-I would recommend the latter.
If the parts are currently not in the car, try a "test fit of the bell to the trans and se eif it works...if the hole is too large, you will end up with transmissiont/clutch alignment issues and burn through parts like crazy.
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The "756" is a truck bell housing, if i recall correctly. That means that while it will house a 168 tooth flywheel and 11" clutch, the pilot hole is intended for a truck transmission, with a bearing retainer neck of 5 1/8"...Car transmissions have a neck of 4 5/8".
you will need either an adapter ring to make that bell housing work, or you will need a different bell housing altogether-I would recommend the latter.
If the parts are currently not in the car, try a "test fit of the bell to the trans and se eif it works...if the hole is too large, you will end up with transmissiont/clutch alignment issues and burn through parts like crazy.
you will need either an adapter ring to make that bell housing work, or you will need a different bell housing altogether-I would recommend the latter.
If the parts are currently not in the car, try a "test fit of the bell to the trans and se eif it works...if the hole is too large, you will end up with transmissiont/clutch alignment issues and burn through parts like crazy.
(if at all)This is a low budget build so I think I will look for the
ring to convert truck to car size.
I have an old chevy z bar pedals etc. which I think I can fabricate to
fit this bell housing. My pilot bearing, bell housing depth etc. seem to be okay. Had to modify transmission mount height.
But I think with your help this might work.
Thanks,
Steve
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Thread Starter
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Joined: Dec 2016
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Still looking for a ten spline 11 disc with 13 inch pressure plate .
Problem is I can not say what car it came ( 70 chevelle 454?)
Remember when the parts guy would go behind the counter
and find what you needed?
Thanks,
Steve
Guess I am old
Racer
Joined: Feb 2012
Posts: 421
Likes: 27
From: Harrisburg PA
Found the ring adapter from Novak $43.00 included shipping.
Still looking for a ten spline 11 disc with 13 inch pressure plate .
Problem is I can not say what car it came ( 70 chevelle 454?)
Remember when the parts guy would go behind the counter
and find what you needed?
Thanks,
Steve
Guess I am old
Still looking for a ten spline 11 disc with 13 inch pressure plate .
Problem is I can not say what car it came ( 70 chevelle 454?)
Remember when the parts guy would go behind the counter
and find what you needed?
Thanks,
Steve
Guess I am old
you do not necessarily need to shop by make model there...
depending upon what budget you are looking for, you shoudl be able to sort the clutch kits by make, input spline, and flywheek (or clutch disc0 size...
if you want to buy local, it will at least give you a starting point...
Thread Starter
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Joined: Dec 2016
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check summitracing.com
you do not necessarily need to shop by make model there...
depending upon what budget you are looking for, you shoudl be able to sort the clutch kits by make, input spline, and flywheek (or clutch disc0 size...
if you want to buy local, it will at least give you a starting point...
you do not necessarily need to shop by make model there...
depending upon what budget you are looking for, you shoudl be able to sort the clutch kits by make, input spline, and flywheek (or clutch disc0 size...
if you want to buy local, it will at least give you a starting point...
Steve
P.S. " I spied the enemy and they is us" PoGo
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13.25 inch 168 tooth. Company is ATP Z-296 (M/T) flywheel.
Do not know what any of that means as far as balance.
I have a stock 350 motor (mild cam and headers) Low HP.
Thanks,
Steve