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06-01-2003, 03:26 PM
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#1 |
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Registered User
Join Date: Apr 2000
Location: Camillus, NY USA
Posts: 79
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327: Small or Large Journal
Buddy of mine gave me a 327 all machined with 4-over pistons, 2-under crank. (Yep, for free :-) Need to get rings and bearings for it.
Anybody know exactly how to tell if it's a small or large journal engine? David
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1972 Chevy Cheyenne Super LWB Chevy Red/White with rally wheels. Not-so-Stock 350, A/T, A/C, tilt. Vroom, Vroom.... ===================== David Colbert dcolbert@twcny.rr.com Work hard, play harder! |
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06-01-2003, 04:17 PM
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#2 |
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Registered Cruiser
Join Date: May 2002
Location: Las Vegas NV
Posts: 2,230
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I'm not positive but I beleive that the small journal engines had pressed on vibration dampers, and the large journals are bolted on.
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I intend to live forever. So far, so good. |
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06-01-2003, 06:06 PM
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#3 |
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Join Date: Dec 1999
Location: Eastern - Manitoba Canada, Winnipeg
Posts: 4,369
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You could look up the suffix code at nastyz28.com and if its a 68 block its large journal.. everything older is small journal.
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Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife. |
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06-01-2003, 06:17 PM
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#4 |
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Registered User
Join Date: Mar 2003
Location: Columbus Ohio
Posts: 1,413
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Small journal cranks have 2.3 inch mains and 2 inch rod journals. Large journal cranks have 2.45 inch mains and 2.1 inch rod journals. and jhhwks is right most large journal cranks have the nose drilled for a balancer retention bolt.
Last edited by sbc350gearhead; 06-01-2003 at 06:20 PM. |
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06-01-2003, 06:22 PM
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#5 |
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Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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the quickest way to tell at a glance......the rear flange(that the flywheel bolts to), is round(machined) with 2 notches cut out on the SJ crank. The LJ crank has a more oblong shape on the rear flange(like a little counterweight added). crazyL
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
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06-02-2003, 08:29 AM
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#6 |
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Registered User
Join Date: Apr 2000
Location: Camillus, NY USA
Posts: 79
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You guys are awesome. Thanks!
Turns out to be a large journal engine. David
__________________
1972 Chevy Cheyenne Super LWB Chevy Red/White with rally wheels. Not-so-Stock 350, A/T, A/C, tilt. Vroom, Vroom.... ===================== David Colbert dcolbert@twcny.rr.com Work hard, play harder! |
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