No. Chevy uses a number of different noses for their starters. The size of the flywheel and year and model of engine determine what nose is needed. The 153 tooth flywheel is smaller in diamaiater than the 168 tooth flywheel. If you want to use a starter from a 168 tooth flywheel on a 153 tooth flywheel the nose from the smaller flywheel starter will have to be exchanged onto the larger flywheel prior to using it.
It's one piece but they have different diameters if it doesn't match up with your starter you may be able to get a starter to match with is easier to change. Example 350 400 Chevy takes different starters and flywheels although they make starters that will fit both depending on which holes you use to mount starter to block.
With the inline bolt arrangement for the 153 tooth flywheel, the stock GM starter used a nose with a short and a long bolt. The short bolt had a 1 7/8" shank and the long bolt had a 4 5/8" shank length. With a stock GM starter for the 168 tooth flywheel (most SBC and BBCs), the bolt arrangement is staggered; both bolts are 4 3/8" long. With the newer mini-starters, the bolts are 3.7" long; if there are two sets of inline holes, the starter may be used with either 153 or 168 tooth flywheels. All of these starter bolts require a cross-hatch marking on the shank to center the bolt as it enters the block to accurately locate the starter. Ensure that the cross hatch extends about halfway beyond the bolt boss.
Yes it will. Both blocks take the same bellhousings. Now, the 250 might not have the hole tapped for the correct starter for a 168 tooth flywheel, but you can either drill and tap it if necessary, or just use a 153 tooth flywheel and bellhousing.
YES
Either 153 or 168. If it has an automatic transmission, it's 153. If it's a manual transmission, it will have 153 for the 1.5" clutch and 168 for the 11" clutch. An easy way to tell is the starter bolts. If both bolts are the same distance from the starter nose, it's a 153 tooth flywheel. If the starter bolts are staggered diagonally from the starter nose (one is farther from the nose than the other) you have the bigger 168 tooth flywheel.
$48 for a remanufactured. both motors that year share the same starter.
Some starters are intended for a 153 tooth flywheel, some for a 168 tooth flywheel. Most 307's had 153's, and most 350's had 168's, but you could put a 153 on a 350 or a 168 one a 307. Both engines are internally balanced, so as long as you have the correct starter for the flywheel, it will work. The one other difference between Chevy starters, is the length of the armature. The longer one is heavy duty, the shorter one is standard duty. Either will work as long as it's mated with the right flywheel.
Small block, and big block use the same flywheel. 400, and 454, are both unique, however, in that they are externaly balanced. 400 will not interchange with any other small, or big block, other then 454. They both use unique harmonic balancers, as well.
It's located under the car just behind the starter. Both sensors are there. The Throtle sensor and the Crankshaft sensor. You have to take out the starter to get to it.
Sometimes. There are two common bolt patterns of Chevy starters, and two common flywheel diameters. Many blocks have both bolt patterns. If the starter bolts up to the block and engages the ring gear without binding, it fits.
The exhaust crossover pipe needs to be dropped from the engine on both sides to create enough space to remove the starter.
first you want to make sure you get both the wires off the back of the starter (this will make it easier later) after that it is 2 bolts holding the starter to the bell housing