Bellhousings
m (moved Bellhousing to Bellhousings) |
(Add text; minor clean up) |
||
| Line 30: | Line 30: | ||
[[File:Bellhousings Reid Powerglide50-60-30-40-20-10-001.jpg]]<br style="clear:both"/> | [[File:Bellhousings Reid Powerglide50-60-30-40-20-10-001.jpg]]<br style="clear:both"/> | ||
From left to right: 4.6/5.4 L Ford Mod motor; SB Mopar; BOP; BB Mopar; Ford 385 series; SB Ford; Chevy. | From left to right: 4.6/5.4 L Ford Mod motor; SB Mopar; BOP; BB Mopar; Ford 385 series; SB Ford; Chevy. | ||
| − | + | ||
| + | ==Manual transmission bellhousings== | ||
| + | ===Bellhousing to transmission bore size=== | ||
| + | There are four main bore diameters used in the Chevy/GMC bellhousings: | ||
| + | *4-1/4": Nova inline 6. | ||
| + | *4-3/16": rare | ||
| + | *4-11/16": common Muncie/Saginaw car and SM420 truck applications | ||
| + | *5-1/8": common SM465 truck applications | ||
| + | *5.6": less common NV4500 truck applications | ||
| + | The 5-1/8" truck bellhousing bores can be reduced down to the commonly used 4-11/16" bore size by using a machined ring available from the aftermarket. | ||
| + | |||
In the case of Chevy bellhousings, there are several that are often preferred for use in modern vehicles. One is the casting number 3899621 bellhousing that fits the 11" clutch. Truck bellhousings have to be selected carefully if used in a passenger car application. Some will have a larger bearing housing hole for the transmission input shaft. There are adaptor rings made to allow them to be used. Later bellhousings used in the GM F- and A-body cars have the transmission tipped over, and there are bellhousings that have provisions for mounting a hydraulic clutch slave cylinder. A page showing this and other bellhousings and associated info is from [http://www.garage-scene.com/t5-into-ag-body/t5_install_bellhousing.htm#14060627 Garage-Scene.com] | In the case of Chevy bellhousings, there are several that are often preferred for use in modern vehicles. One is the casting number 3899621 bellhousing that fits the 11" clutch. Truck bellhousings have to be selected carefully if used in a passenger car application. Some will have a larger bearing housing hole for the transmission input shaft. There are adaptor rings made to allow them to be used. Later bellhousings used in the GM F- and A-body cars have the transmission tipped over, and there are bellhousings that have provisions for mounting a hydraulic clutch slave cylinder. A page showing this and other bellhousings and associated info is from [http://www.garage-scene.com/t5-into-ag-body/t5_install_bellhousing.htm#14060627 Garage-Scene.com] | ||
The bellhousing has to be aligned correctly to the crankshaft centerline. This will allow less wear and a smoother drivetrain. Offset dowels are available to correct this alignment if it’s found to be off. More on this page by [http://www.hurst-drivelines.com/wp-contehud/uploads/GM-Dial-Indicating-RobbMC-instructions-Revised-6-15-09A.pdf Hurst]. | The bellhousing has to be aligned correctly to the crankshaft centerline. This will allow less wear and a smoother drivetrain. Offset dowels are available to correct this alignment if it’s found to be off. More on this page by [http://www.hurst-drivelines.com/wp-contehud/uploads/GM-Dial-Indicating-RobbMC-instructions-Revised-6-15-09A.pdf Hurst]. | ||
| − | |||
===Casting numbers of some common Chevy bellhousings=== | ===Casting numbers of some common Chevy bellhousings=== | ||
Your Privacy Choices