What do you need to know about crankshaft interchange?
However, the crank flange spacing, bolt pattern, pilot bushing bore changes and flexplate / flywheel configurations play importantly into interchange. This guide will help the interested reader through their complexities.
Where does the crankshaft go when setting to TDC?
So, if you simply set the crankshaft to TDC without looking at the position of the camshaft, you may actually be at TDC on the exhaust stroke for cylinder #1.
Where is the crank spacing on a GM Gen III engine?
This is not an issue when working with original-configuration GM powertrains, but must be addressed when mixing different iterations of GM transmissions. An example of the Early 4.8L and 6.0L extended crank flange, protruding 4/10ths of an inch past the other LS / Vortec engines in the Gen III+ family.
What happens when you put a manual transmission in neutral?
The components in modern manual transmission are always in motion even when the gears are in neutral. If there is no lubricant in the gearbox, you could have done major damage to the engine and gearbox components by running the car. You could end up with an expensive repair and even replacement of the whole transmission system.
What should I check before installing a manual transmission?
Clutch Disk – The life decision maker of the whole manual transmission set-up. Install it correctly. The top-hat side of the disk goes towards the transmission. There may also be a sticker on the clutch disk indicating which side goes which way. Verify the spline of the disk matches the spline of the input shaft of the transmission.
However, the crank flange spacing, bolt pattern, pilot bushing bore changes and flexplate / flywheel configurations play importantly into interchange. This guide will help the interested reader through their complexities.
This is not an issue when working with original-configuration GM powertrains, but must be addressed when mixing different iterations of GM transmissions. An example of the Early 4.8L and 6.0L extended crank flange, protruding 4/10ths of an inch past the other LS / Vortec engines in the Gen III+ family.
What should the crank spacing be on a GM 4L80E?
In the case of the 4L80E transmission, GM added a crank spacer and longer bolts to use with the flat flexplate supplied. Either of these strategies position the ring gear in the plane of the starter motor gear and provide the proper spacing necessary to meet the torque converter drive pads.
