They will tell you the engine assembly date and any letters can be further decoded. There should be numbers and letters stamped there. There is a very high probability you have a 250 L6 engine.īut to be sure look on the ''Dress Pad" behind the distributor. Just waiting to win the lottery to get started on the project. 261's had a head with the casting number ending.
Head and block casting numbers from Block c/n: c/n- block casting numbers. Head casting numbers: 382 prefix of casting number GMC cylinder head casting numbers. I have the 292-4WD only diagonal crossmember. Also the side covers on a 194-250 are about 4.5' tall while the 292 is about 6' tall. I have a project '72 Blazer body I want to put a 292 L6 into. Go figure? Ford never had a problem putting their copy, the 300 ci ''I6'' in Broncos. I guess GM didn't want to have to warranty a Dana 200 transfer case behind a torque monster.
The 292 L6 sometimes came in 4x4s, but oddly never in K/5s. If a buyer wanted a 292 it would be ordered by the dealer and built by GM and L25 292 L6 stated on the SPID. Guessing that means 250? KS would be 4x4 with 292? These are a cast-iron version of the reverse-cooling heads used on the 1990s LT-series engines.
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