Jay, I'd avoid platinum in an older Mopar (like, pre-2000). Tried 'em once in one of my 1990s Jeeps (with a 318, er, 5.2) and the car barely idled. Went back to regular Autolites and all was well. Heard the same from several other people. As for SplitFires, in a desperate attempt to pass CA smog test after my '67 had sat for close to a year without a long drive (though the new paint looked great!), I tried the snake-oil approach, including SplitFires, and while the car ran well for about 100 miles (and passed smog), it then began to misfire terribly. Upon removing the SplitFires, I found that three of them had completely blown off their electrodes (all three per plug) and the rest were looking mighty ill. That was when I discovered Autolites for the first time, and I never went back. A properly set-up 440 with a stock distributor and the timing set perhaps a little more retarded than spec (as little as 4 deg BTDC rather than 16) should run quite well unless there is some other problem requiring more than a band-aid solution. Just my $0.02! -- Chris in LA 67 Crown 78 NYB Salon On 10/25/04 4:53 pm, JCantor791@xxxxxxx (JCantor791@xxxxxxx) wrote: > One question came out of all of my research - would there be any advantage to > gold or platinum plugs in early Hemi's over conventional copper plugs? Both > Champion and Autolite claim to offer a platinum plug for the 354. ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm