1967 Chevelle

Engine Block - Group 0.033

  • The 1967 Chevelle V8 engines were the last year to use the canister type oil filer.
  • The 1967 Chevelle 396 engine was the first 396 to NOT have an oil groove in the rear camshaft journal.
  • The 3902406 casting number on the 396 cid engine block was a 1967 only model year casting although some late 1966 models may have used it as well.
Casting Number Engine Size Engine Horsepower Main Caps/Information
3892657 327 275 - 325 2-bolt main bearing caps. Used for most 1967 327 applications
3896944 283 195 2-bolt main bearing caps. Tonawanda cast block
3896948 283 195 2-bolt main bearing caps. Flint cast block
3903352 327 275 - 325 2-bolt main bearing caps. Used mid to late 1967.
3902406 396 325 - 350
375		 2-bolt
4-bolt
Used for late 1966 and 1967 years only due to change in oil galleys. Second design 396, no dowel pin on timing cover and last year to have this timing cover design and canister type oil filter. Casting date is located on the right lower side of the block near the freeze plug. this block also has the tall tower distributor casting boss in the lifter gallery.
3916323 396 325 - 350
375		 2-bolt
4-bolt
Used from June of 1967 to June of 1968. First block to use spin-on filter in place of canister filters used in early Mark IV engines and reported to have been used in very late (June/July/August) 1967 Chevelles.

Engine Block Month Date Codes

A - January E - May I - September
B - February F - June J - October
C - March G - July K - November
D - April H - August L - December

Casting Clock

File Photo

The Saginaw foundry casting clock is approximately 2-inches in diameter and is usually found on the rear of the block by the casting number. The clock has 10 dots representing an hour of a shift. The second dot outside the circle indicates the start of a ten-hour shift. The Saginaw foundry usually ran two ten-hour shifts, 7:00 A.M. to 4:00 P.M. and 4:00 P.M. to midnight. Parts cast at the beginning of the shift would have the pointer pointing to the double-dot position as shown in the photo. Every hour the pointer would be moved clockwise to indicate the hour. The slot in the pointer indicates the shift. A flat, slotted head indicates the first shift, the second shift has a round head in the pointer. This pointer indicates this block was cast first hour of the first shift, or 7:00 to 8:00 A.M.
File Photo Note the difference in the Tonawanda foundry casting clock. This clock has 11 dots plus the number 12. The pointer indicates this block was cast in the 8th hour of the shift.

File Photo
Block casting 3902406 ~ 396 2-bolt (325hp/350hp) or 4-bolt (375hp) main caps. 
The letter "P" reportedly indicates the block was destined for passenger car and not a truck but no Chevrolet documentation has been discovered yet to support this.

File Photo
Block casting 3892657 ~ 327 (275/325hp) 2-bolt main caps. Also used on 1967 302 and 350 Camaros.

File Photo
Casting date F 16 6 ~ June 16, 1966 ~ located below center freeze plug on passenger side of 396 engine.

File Photo
Casting date A287 ~ January 28, 1967 ~ located on the bell housing flange on the passenger side of 283/327 engine.

1967 was the last year of the oil canister and replacement filter on both 396 (left) and 283/327 (right) engines.
Beginning with the 1968 model year a spin-on replacement oil filter was used.
File Photo  File Photo
The canister itself was satin black with silk screened maintenance instructions in white.

File photo - oil filter canister
Silk-screened maintenance instructions.

File Photo
Center bolt marking.

File Photo

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Note the size of fittings next to the oil filter on this 3902406 4-bolt main block. On 4-bolt main bearing blocks the front hole (next to freeze plug in this photo) is drilled 1/2" pipe thread and is drilled and tapped into the oil galley. The center hole is drilled and tapped a 3/4" pipe thread into the oil galley. The rear hole above the oil filter with the machined face has a 1/2" USS coarse-thread hole and is not drilled into the oil galley and is used to mount the pivot ball for the manual transmission clutch release cross-shaft.

On 2-bolt main bearing blocks the front hole is drilled 5/16" and is not drilled or tapped into the oil galley. The center hole is drilled and tapped a 3/8" pipe thread into the oil galley. The rear hole above the oil filter has a 1/2" USS coarse-thread hole and is not drilled into the oil galley.

Also note the casting "HIPERF" and "PASS". All 1965-1991 Gen IV big block engines have some form of "HIPERF", "HIPER", "TRUCK", "PASS", etc. These cast words have no bearing on whether the block was destined for a passenger car or truck and have no bearing on what horsepower the engines would eventually be built to. This example happens to be a 4-bolt block but the "HIPERF" casting has bearing on this.

File Photo

CHEVROLET P&A CATALOG REPLACEMENT PART NUMBERS - see Group 0.000 for more
6-CYLINDER ENGINE ASSEMBLY
3930950 ~ 230 cid ENGINE ASSEMBLY *
3930966 ~ 230 cid BLOCK ASSY. **
3930974 ~ 250 cid BLOCK ASSY. **
3930967 ~ 230 cid FITTED CYLINDER BLOCK (Includes Pistons, Pins, Rings and Bearings) ***
3930973 ~ 250 cid FITTED CYLINDER BLOCK (Includes Pistons, Pins, Rings and Bearings) ***

283-ENGINE ASSEMBLY
3970186 ~ ENGINE ASSEMBLY *
3970164 ~ PARTIAL ENGINE **
3970128 ~ FITTED CYLINDER BLOCK ***

327-ENGINE ASSEMBLY
3970188 ~ ENGINE ASSEMBLY (exc. Sp. H/Per.) *
3970156 ~ BLOCK ASSY. (exc. Sp. H/Per., H/Per.) **
3970158 ~ BLOCK ASSY. (w/Sp. H/Per.) **
3937288 ~ FITTED CYLINDER BLOCK (exc. Sp. H/Per., H/Per.) ***
3970136 ~ FITTED CYLINDER BLOCK (w/H/Per., Sp. H/Per.) ***

396-ENGINE ASSEMBLY
3960000 ~ ENGINE ASSEMBLY (exc. H/Per., Sp. H/Per.) *
3981817 ~ BLOCK ASSY. (exc. Sp. H/Per., H/Per.) **
3981822 ~ BLOCK ASSY. (w/Sp. H/Per.) **
3981807 ~ FITTED CYLINDER BLOCK (exc. Sp. H/Per., H/Per.) ***
3981811 ~ FITTED CYLINDER BLOCK (w/Sp. H/Per.) ***

* ENGINE ASSEMBLY is less distributor, exhaust manifolds, flywheel, clutch housing and component parts.
** PARTIAL ENGINE includes block, camshaft, crankshaft, timing gears, pistons and connecting rods.
*** FITTED CYLINDER BLOCK includes pistons, pins, rings, and bearings.