I'm Carl from Clarksville, Tn. still trying to gather imfo for my 67 Camaro.

Engine Front ID#
V1121TWZ
C8J127568
Would this be a (4)four bolt block engine?

My car has front (4)four piston disc brake system; is this original from the factory?

Thanks

Looks like that engine is from a '78 truck:
1978 TWZ 350 conv.cab L LS9 165hp 4bbl K-10 to 2500

C8J127568 is the year\partial VIN number from the vehicle it came out of. The 8 goes along with the TWZ for a '78 truck. They went into some 4x4's so maybe it is a 4-bolt block. Someone here will know...

C8J127568

C - Chevrolet Truck
8 - Model year ending in 19?8
J - Janesville Wisconsin final assembly
127568 - Production Sequence Number, started at 100001 making this the 27,568 truck order built at Janesville.