Rob, All 81-83 Imperials came with a 100amp alternator as standard equipment. As for the belt length take a piece of string and run it around the pulleys, then measure the length. This is not an exact science but it will give you a place to start. By the way what intake manifold did you use? I used an Edelbrock Performer on my 360 and everything bolted right up. Dave U. 81 Imp -----Original Message----- From: mailing-list-owner@xxxxxxxxxxxxxxxx [mailto:mailing-list-owner@xxxxxxxxxxxxxxxx]On Behalf Of Rob P Sent: Friday, February 27, 2004 12:01 AM To: mailing-list@xxxxxxxxxxxxxxxx Subject: IML: 80s belt/alt Does anybody know if my '83 would likely have a 100 amp alternator? I assumed they'd all be the same, since there were no options, but the NAPA site indicates at least 2 alternators. I have to disconnect my a/c and leave the compressor off because it interferes with my new intake. I figured I could get the belt from a Cordoba/Mirada with no a/c, since my belt will no longer be going around the a/c pulley. Problem is that the NAPA site indicates different part numbers for 100 amp and non-100 amp alternators. Worse, it indicates that the belt is the same for a 100 amp with or without a/c! That can't be right. The belt would have to be considerably shorter. Any ideas appreciated. Yes, I have the FSM, unfortunately they are with my mechanic. He could take care of all this, but he's been doing me a favor and I'm trying to make the job go faster and easier (cheaper). Thanks. Rob _________________________________________________________________ Take off on a romantic weekend or a family adventure to these great U.S. locations. http://special.msn.com/local/hotdestinations.armx