I realize this has been brought up numerous times, but I'm strapped for time and don't have time to do a search. I need recommendations for an opti, the one in my '94 Z28 went out. Is the '94 one non-vented? Can it be replaced with a newer, vented one? I remember reading that some were more recommended than others and some that were to be avoided. Any information is greatly appreciated.

94 Z28 M6

 

The 95+ is vented. In order to swap to that you need a 95+ wiring harness and a 95+ opti vaccm harness. Im doing the swapin december along with the my cam swap. Keep in mind that its not cheap!!

 

I have a 94 Z28 and went with the MSD opti. it's a bolt with vacum hose's. To switch to the 95 the timing gear is different,the cover is different, cam dowel, easier to to buy the distributer then find all the other peices.
I did have problems with the first MSD but they sent me another one. No problems with this one.

 

hey jake, did you buy the whole dist. or just the cap and rotor? And did they warrenty the other one or did u buy another one? I love MSD products but heard that the msd opti wasnt as good as you would think.

 

The mechanic I'm using gets his parts from Carquest; would anybody happen to know which opti they stock?

 

I bought the complete distributer. MSD did stand behind it and sent me a new one. I had to send them the first one it took about a two week turn around. I got the opti for $460. I heard some bad stuff about the opti's from carquest and autozone. I would go with an aftermarket one or original GM.

 

$460 isnt too bad. Still a little steep thou if ure on a budget. Wonder how the $299 accel one is.

 

I personally perfer the Dyna Spark

 

the accell one does not just bolt on a 94 f-body. It is for the 95 and up

 

Thanks everybody, looks like I'm going with a GM unit; for a little bit extra I've got a lifetime warranty on it. Hope to have the car back tomorrow along with a K&N CAI in place of the home-made hack system I had.

94 Z28 M6