I’m preparing a plan to tear into and restore my 70 W30. Have few questions:

1. What is the p/n for forged crank shaft for a W30?
2. Once I tear into the engine, how can I tell if the engine has forged piston rods?
3. What is the correct cam for a stock W30 automatic with 3.42 rear?
4. What is the correct stall torque converter to get? The car has the original # matching OW TH400 transmission.

Thanks in advance.

 

cam part# is 400165 with duration of 285* on the intake, 287* exhaust. valve lift is .472/.472 intake and exhaust, with 57* of overlap on a 39 degree bank angle.

 

www.supercarsunlimited.com can help out a lot. you can purchase the correct cam there.

 

1) Forged crank not used in W-30 455's...so that's not an issue. Cast nodular iron is what you'll have in there.

2)All the rods are forged...that's what you will also find. I'll show you sometime how to tell it's a forged part vs. a cast part.

Basically you look at the "parting line" in the casting or forging. The "parting line" will be a narrow, sharp raised ridge running along the part somewhere if it's cast. On a crank you look at the rough cast crank throws and you'll see the parting line. On a rod you look at the "sides" of the rod (ie the sides of the rods on the same plane as the rod bolts).

The "parting line" will be wide and flattened out on a forged part. Easier to show you and I'm not going to haul a crank in here to take a picture of!!!