327 Crankshaft

[Jerry C.]

Did chevy have a 327 with large crank journal and if so what year did the change from small journal? Thanks in advance.

[Paul D.]

Re: 327 Crankshaft

I believe they went to large journal for the 1968 model year.......I know '67 is small.....And 1969 is large.....P

[Leif A.]

Re: 327 Crankshaft

I believe they went to large journal for the 1968 model year.......I know '67 is small.....And 1969 is large.....P

Wasn't '69 the first year for the 350??

[Joe C.]

Re: 327 Crankshaft

Large journal 327 in production 1 year only: 1968.

[Steven B.]

Re: 327 Crankshaft

350's were introduced only in the 1967 Camaro SS. They were rated at 295 HP. Corvettes gained the 350 / 300 HP as part of the standard drivetrain in 1969.

[Edward B.]

Re: 327 Crankshaft

Large journal 327 in production 1 year only: 1968

For the Corvette. The Camaro discontinued the 327 at the end of December, 1968 (1969 model year), but the full size cars had it until the end of the 1969 model year.

Ed

[Bryan S.]

Re: 327 Crankshaft

Also remember that the service parts department continued to offer both large and small journal 327 crankshafts over the counter well into the 1980s and possibly 1990s.

[Joe L.]

Re: 327 Crankshaft

Did chevy have a 327 with large crank journal and if so what year did the change from small journal? Thanks in advance.

1968 was the first year for large journal. Most small journal 327 cranks are forged steel. Most large journal 327 cranks are nodular cast iron. The exceptions: 1968 L-79 engines used in Corvettes and Chevelles and some 327 cid 1968 MD/HD trucks.

The 327 large journal cranks lived on in PRODUCTION after the 327 was discontinued as they were also used in the 307.

[David L.]

Re: 327 Crankshaft

My 1969 Chevrolet Parts Catalog (Oct. 1968) lists the following in Gr. 0.646 (Crankshaft):

68 PASS. CORVETTE (307,327)(exc. Sp. H/Per.)...................3930809#
# NOTE: Some early 1968 (327) models use 1967 engines , built to 1968 spec.
These meet 1968 spec. except. as follows: Cylinder and Case Assy., Conn. Rod Assy., Crankshaft Assy., Main and Conn. Rod Bearings, Replaceable element Oil Filters, by-pass valve and related parts. These can be identified by the oil filter (1968's use the throw-away type oil filter).

68 CORVETTE w.Sp. H/Per.(327)......................................... .3941681

69 PASS., CORVETTE (350)(exc. H/Per.)...............................3932444

69 CORVETTE w/H/per.(350)......................................... .......3941184

Dave