Block I.D.

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Jan 21, 2002 | 05:24 PM

84LS creeper

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Junior Member

Joined: Nov 2001

Posts: 23

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From: Hinesville, GA, USA

Car: 96 Chevy Silverado

Block I.D.

Need help with block I.D., I tried Mortec but number did not come up.

L/S Flange GM5.7LG 14010207

Rear H43 201
207

Thanks

Jan 21, 2002 | 08:38 PM

AlkyIROC

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Joined: Jul 1999

Posts: 17,262

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From: 51°N 114°W, 3500'

Car: 87 IROC L98

Engine: 588 Alcohol BBC

Transmission: Powerglide

Axle/Gears: Ford 9"/31 spline spool/4.86

Get the code off the pad in front of the passenger side head. You're looking for a 3 digit letter code.

14010207 is 80-85 350 truck block with 4 bolt mains.

H43 201 207 are date codes.
H43 = Aug 4, 1983

So I'd say you have a 350 4 bolt main block out of a 1983 pickup truck. Truck model, HP and tranny options are unknown without the suffix code.