* Bellhousing Compatibility: The 350 and 250 have different bellhousing bolt patterns. This means the transmission's bellhousing won't align with the engine's block.
* Input Shaft Length: The input shaft of a 350 transmission is typically longer than a 250 transmission. This is because the 350 has a larger flywheel and clutch assembly.
* Clutch and Flywheel: The clutch and flywheel on a 350 are larger and different from the 250. They won't be compatible.
What you can do:
* Adapter Plate: You can use an adapter plate that will bridge the gap between the 250 engine's bellhousing pattern and the 350 transmission.
* Custom Bellhousing: If you have a custom bellhousing made, it will match the bolt patterns of both the engine and transmission.
* Use a 250 Transmission: The most straightforward solution is to use a 5-speed transmission designed for a 250 engine. This will save you a lot of hassle and ensure proper compatibility.
Before making any modifications:
* Research: Thoroughly research the specific engine and transmission models you're working with.
* Consult Experts: Talk to mechanics or transmission specialists for advice and to make sure your modifications are feasible and safe.
Remember, modifying your car's drivetrain can be complex and require specialized knowledge. Proceed with caution and consult with experts if you're not confident in your abilities.
