If you got it certified before July 1991, then the following applies.
10.3.3 After July 1, 1991 no new verifications of engine changes in accordance with Sections 10.3.4 and 10.3.5 of these Regulations shall be accepted unless it is demonstrated to the satisfaction of the Director that the changed system is equally or more effective in controlling emissions than those systems originally manufactured on the vehicle. Installing an older engine or installing an engine with an engine displacement that is other than that originally available for the vehicle, will result in the vehicle being classified as “tampered”. The rules relating to tampering will then apply to such vehicle.
10.3.3.1 Testing according to the guidelines of Sections 10.3.4 and 10.3.5 of these Regulations shall only pertain to those vehicles that received verification by the Department prior to July 1, 1991.
10.3.4 For 1968 to 1983 vehicles, having an engine older than the original, the owner may apply to the Director for a verification of an engine change. Verification will be made, provided that the owner can prove the actual model year of the engine. The model year of the engine shall be substantiated by a reference manual or an affidavit from a reputable source, as determined by the Director. The cutpoints for the year of the engine may then be used rather than the year of the vehicle. Vehicles with engines older than 1968 shall be tested to 1968 standards.10.3.5 If a 1984 and newer vehicle has an engine other than the original, the vehicle owner must demonstrate to the Director that the emission control systems on that engine are equally or more effective in controlling emissions as those systems originally manufactured on the vehicle before a Certification of Compliance is issued.
If you got it after 1991, you're screwed. The pre-83 apparently no longer applies? Funny, they don't give a scenario for pre-83 with a newer engine.
I had always heard, directly from the county, that up to '83 it had to be under 220 for one of the numbers, and I don't recall the other, but it just had to be under certain standards. And after '83, no swapola. However, I know that we put a '91 454 in an '87 chev 4x4 K20 pickup (never offered) and it just had to have all the emissions stuff on it to pass, and it did. We did that in '95 or '96 or so.
Brett (had a '65-'70 396 in a '74 blazer, now had a '62 283, currently an '84 350, and soon an '89 454 in my '83 jeep. I like that trend...maybe next an '03 496)
a) was made in America prior to 1935;
