jkucz31

you guys all know what the optispark looks like and it has a little dowel piece with teeth in it so it fits into to stock cam gear. My question is i got the carquest one and on the cam gear there are no teeth for the opti spark. will it still work. heres some pics i got for ya

stock cam gear with teeth in center hole.....




heres the carquest one with no teeth




I need your help asap thanks alot

Joe B

On the older cams that have the small tapered hole and short dowel pin (92-some 95's)...I believe you need the splined 10128349 for it to connect up and work.....the unsplined one (newer model you got) for the later years had the 10206039....the backside of the later opti design had no teeth (on or in) the dowel like the previous version.....it was instead driven from a longer cam dowel pin........hope this helps some

Javier97Z28

Your purchased a timing set for 95-97 car w/ a vented opti.

You'll have to put on a different cam gear to make that work.

shoebox

You need the splined cam gear or your optispark is not going to work.

jkucz31

i called carquest told them i need a set for a 94 z and they gave me the same part number for theo ne i got and he said no difference for 94 and 95s. but im returning this and picking up a gm one for 86 bucks 3 piece set that is

quickmedic1

The sliped gear was used on 92- early 94. Some 94 and 95-97 got the dowel pin version.

jkucz31

oh what set-up is better then

Z95m6

You must used the splined gear to make your opti work. If not convert to a vented opti and get you the LT4 extreme duty chain.

quickmedic1

If you use the 94-97 gears and chain you can use the newer opti spark which costs less monet to replace than the earlier opti. The newer set up also enables you to used roller chain set ups costing less money and are stronger than link belt type chains.

If you are not changing out your cam then you will have to use what fits. If your changing your cam and have the money then change to the newer stuff. Cheaper to replace and better products available.

LiENUS

Hel'l need to replace his timing cover and cam to do that trick.

ssnorm96

So am I correct in saying that the 96s use the long cam dowel pin to drive the Opti?? What mods need to happen to the timing cover to use a double roller timing set??? Hope you don't mind me jumping in on your thread