Originally Posted by
bigdougsoutho
Hey guys I hope that someone can help get me pointed in the right direction. I have been trying to get all of the bugs worked out of my 67 Le Sabre for about a year now. I'm not trying to hot rod it or anything it's my daily driver. I recently have been having trouble with the ignition and timing. I pulled the OE breaker point distributor from my donor car and the cam gear? is worn down in the center where the rubbing block makes contact. This was also the case with my driver. I checked the gap (.016) of the points, set timing at 2 - 1/2 BTDC The car still is not running well, and I cannot get the dwell angle greater than about 23 without it running terribly worse. (the car ran great up until a few weeks ago when the engine developed a ping on light acceleration - tried running a couple tanks of different fuel as well.) I know that there are a few aftermarket types of ignition systems available, I am a retired carpenter - not a professional mechanic - so if anyone can offer some advice I would greatly appreciate it!
Distributor shaft bushings can wear out and that results in the dwell going all over the place because the shaft is wobbling. Dwell effects timing, so your timing goes all over the place as well. Getting the distributor rebuilt can remedy that. There are several points elimination kits on the market that can get rid of the points. I have heard good things about the Crane kit as well as the Lectric Ltd. unit.
Another option is a guy named Dave Ray. He rebuilds and recurves your distributor and converts it over to electronic ignition (uses GM HEI module), or he can convert it over to MSD trigger so that you can run an MSD box. Not sure what his lead time is, but if you have a spare or junk distributor, you can send it to him. His work is impeccable.
www.davessmallbodyheis.com
Larry
1970 GS455 Stage1 Race weight 4025 lbs.
TSP 470, 602 HP, 589 TQ
MT headers, Gear Vendors Overdrive
Best E.T. 11.54 Best MPH, 116.06
1998 Riviera SC3800
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