Mine was stuck good to the timing cover so it ripped when I took it off. Used some super copper after I cleaned the area really well and 3 months later and its holding good.

 

With your mods why do you feel its necessary to go with the double roller. I just had my 383 done and the machinist said even the stock one is fine. Just get a new one. I opted for the Extreme Duty Set. for piece of mind.

 

Even 'ole John Lingenfelter doesn't feel you need an aftermarket timing chain until you're well over 400 hp.

 

I plan to be pushing over 400 eventually - just wanting to prevent future problems

 

I run that cloyes double roller also, along with a csi elec wp
had to grind the cover down, wont too bad.
cut the ends of the oil pan gasket where it goes around the timing chain cover and when i put it in i just used plenty of rtv there
no leaks

 

Vented opti conversion is also necessary on 93s and 94s.

 

Which vented conversion are you talking about.
The dynotech that bolts right up to the 94Z or a conversion kit that includes the use of a 95 timing cover?
because I am putting on a dynotech.

 

I dont know much about the dynotech. I was talking about the GM vented opti conversion with 95 cover (about $350 from Jason Cromier sp??).

If the dynotech you are using runs off the splined shaft
(as I assume it does, if it's a direct bolt on for a 93 or 94 LT1 and uses the stock 93/94 timing cover),
then you cant use a double roller timing chain - here's why. The 93/94 opti is actually ran off that splined shaft. One side of the shaft goes in the keyway in the back of the opti. This shaft then protrudes through the small hole in the 93/94 timing cover. The other end of the shaft is also splined and goes into the keyway of the timing gear. There are no double roller timing sets that have the required keyway. For that matter, the ED and LT4 chain sets dont have the required keyway either. As this time, the only option for nonvented optis, over the stock chain set, is the Lunati chain. It's a linked belt chain, like the stock peice (it's not a roller as some people have suggested). And I have my doubts whether its actually any better than the stock piece - I hadnt heard any real world feedback on it, so I checked with the lunati techs and even they couldnt give me any useful info on it, so I wasnt about to be the test dummy... (I opted for the opti converstion/double roller/elec waterpump).

Also, the stock timing gear (upper) has a ring gear fabricated on the backside to run the water pump. None of the double roller timing sets have this additional ring gear, so your forced to go to an electric waterpump, when running a double roller.

On more thing - the vented opti use an entirely differnt mechanism for it's drive, instead of the double spined shaft - so even after the vented opti converstion, you'd still need a cam with a larger hole in the face and a longer dowel pin.

If you really want to do a double roller converstion, it looks like you need to:

1. exchange your dyno tech for for the 95+ style with the late model drive
2. gather the rest of the vented opti-converstion parts (other than the vented-opti of course, since your using dynotech)
3. Buy the double roller set
4. Buy an electric water pump
5. Either buy a new cam, or have yours machined and change out the dowel pin.

Yea, that's a lot of stuff

 

Thank you sir
you just saved me a sh**load of trouble
muchly appreciated

 

No problem.

BTW, check out this page and you can see the differences between the early and late model optis and chain sets. (no info on double rollers there though)

http://para.noid.org/~muttvette/opti.html