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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Keith8486 on May 14, 2013, 06:41:48 pm

Title: Suffix code????mystery
Post by: Keith8486 on May 14, 2013, 06:41:48 pm

I have an 454 motor. No casting number...but got an suffix code of....t0316m6b.....I know the first 5 mean.the last three I can't find anywhere. Please help.the heads are 91-01 heads.suppose to be an stock vortec motor.

Title: Re: Suffix code????mystery
Post by: Captkaos on May 19, 2013, 02:28:04 pm

How can you have a motor that doesn't have a casting number.  All of them has casting numbers...