318LA to 360LA

[Slyfoot]

I know everything will enter change but internally balanced externally balanced do I need to use the 360 flywheel 1967 w200 4 speed 4wd

[Jims68]

When using a 360, you need to use the 360 flywheel. Also, there may be a difference in the pilot bearing too. Others may give more detailed info.

[Johninky]

I copied this from another forum:

. 360 V8s are balanced externally on the flywheel.

2. 318 V8s are balanced internally on the crankshaft.

3. You can not use a 360 flywheel on a 318 or a 318 on a 360 because of 1. & 2.

4. 61-68 flywheels were .375" thicker so that they would clear the front flanges on the hydraulic bellhousing.

5. If you can not find one of these thicker flywheels you will need to install a .400" spacer between the crank and the later 318 flywheel. This is also true if you are installing a 360 V8.

6. It is very difficult to find a 360 flywheel since most of the later 360 engines came with automatic trannies. Because of this it is much less expensive to install a 318 than a 360.

7. 61-68 and the later engines used different starters and ring gears. The 61-68 ring gear had 172 teeth, the LA series engines had 143 teeth. Therefore if you are using a late flywheel you will need to change its ring gear to a 172 tooth one.

[PwrWgnDrvr]

U could also have a 318 flywheel balanced for a 360 at a machine shop. U will have to dig for the method and specs and search for a shop that can do it. Good luck.

[Slyfoot]

I have a 1974 Dodge Challenger Rallye for Speed came with a 360 I have plenty of spare parts I also have a flywheel I was planning on using that flywheel for the Power Wagon do you think it will work

[Slyfoot]

Dodge also used the same Pilot Bearing
Fits 1964-92 Small Block: 273/318/340/360 LA
Fits 1959-78 Big Block: 383/400/413/426W/426 Hemi/440
Bronze

[PwrWgnDrvr]

I have a 1974 Dodge Challenger Rallye for Speed came with a 360 I have plenty of spare parts I also have a flywheel I was planning on using that flywheel for the Power Wagon do you think it will work

see #5 and #7 above.

[Johninky]

The only way I see this working is to have the poly flywheel rebalanced and using the poly starter. Rebalancing the poly flywheel and using it solves a lot of starter problems.

[Hobcobble]

The only way I see this working is to have the poly flywheel rebalanced and using the poly starter. Rebalancing the poly flywheel and using it solves a lot of starter problems.

You can also use the LA318 flywheel from a 100-200 series hydraulic clutch Sweptline
up through '68.
John