LT1-LT4 Modifications 1993-97 Gen II Small Block V8

cam swap timing set

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Old Feb 24, 2013 | 01:51 PM
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Default cam swap timing set

non vented opti, ewp what timing set? Le said to go with a pro gear sbc set but not sure witch one. Whats everybody running?
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Old Feb 24, 2013 | 02:17 PM
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If you have a non-vented opti, you have little choice. The stock type set is the only one that will turn the opti. If you want freedom to choose other SBC type sets, you'll have to convert to a vented opti.
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Old Feb 24, 2013 | 04:55 PM
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so just stock lt1 timing set? I've thought about converting but ive got to much money in this thing as it is.
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Old Feb 24, 2013 | 05:23 PM
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A stock GM set is not a bad piece. You have essentially narrowed your choice to that, anyway.
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Old Feb 26, 2013 | 11:32 AM
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Is it worth changing to opti spark II?
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Old Feb 26, 2013 | 12:12 PM
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Originally Posted by maromatt
Is it worth changing to opti spark II?
That's purely up to you. Other factors have to be in place for you to do a swap to a vented opti.
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Old Feb 26, 2013 | 12:23 PM
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I swapped to a vented and have had no issues coming up on 7 years on my MSD.
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Old Feb 26, 2013 | 02:42 PM
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http://www.ebay.com/itm/261175541446
is that the right cover? I cant find that part number, only difference is cps right?

Last edited by maromatt; Feb 26, 2013 at 02:55 PM.
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Old Feb 26, 2013 | 03:15 PM
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cps sensor and the hole for the opti is slightly bigger i believe too, i used a stock timing set and jus replaced my chain though, not the best choice but at the time the build price was already way over my budget haha.
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Old Feb 26, 2013 | 04:54 PM
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yeah I know what you mean, will my cps work with that cover?
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Old Feb 26, 2013 | 04:59 PM
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your car shouldn't have a crank position sensor i believe, i believe that was a 96-97 obd2 thing if im right, others might know better though...
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Old Feb 26, 2013 | 05:06 PM
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Originally Posted by maromatt
http://www.ebay.com/itm/261175541446
is that the right cover? I cant find that part number, only difference is cps right?
That is a 95 cover. Vented opti and no CPS. Best choice for a swap, IMHO.

Originally Posted by maromatt
yeah I know what you mean, will my cps work with that cover?
You don't have a CPS if you have a non-vented opti now. It would be nice if you made a signature with some car info, so people would have something to go by.
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Old Feb 26, 2013 | 05:23 PM
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thanks, my first post says non vented. shbox thanks for all your help. I'll buy that one
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Old Feb 26, 2013 | 09:18 PM
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Originally Posted by maromatt
thanks, my first post says non vented. shbox thanks for all your help. I'll buy that one
I know you said that, but if you posted car info, everyone would automatically know what opti you have. It's just smart to make a sig. It helps everyone, including you.
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Old Feb 27, 2013 | 06:27 AM
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The MSD kit adds a vent for longevity, the stock set while much hated doesn't actually break and if you don't like how loose it is a $20 Cloyes lower gear can solve that or I believe Lunati does make a "non-vented" timing set.

Even if the stock timing set left something to be desired taking the WP load off of it would help make it last better.
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Old Feb 27, 2013 | 06:51 AM
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Originally Posted by 96capricemgr
The MSD kit adds a vent for longevity, the stock set while much hated doesn't actually break and if you don't like how loose it is a $20 Cloyes lower gear can solve that or I believe Lunati does make a "non-vented" timing set.

Even if the stock timing set left something to be desired taking the WP load off of it would help make it last better.
Any time I have ever seen a picture of a Lunati set, it had the stock GM part stampings on it. IDK if they used a GM pic or what, but it sure looks like a stock set. In the past, the only other set that I have seen that would seem to be appreciably better was made by Doug Rippie and was very expensive.
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Old Feb 27, 2013 | 01:27 PM
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well going optispark II, so now what? sbc double roller? also im going with a summit electric water pump
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Old Feb 27, 2013 | 03:18 PM
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Originally Posted by maromatt
well going optispark II, so now what? sbc double roller? also im going with a summit electric water pump
Cloyes 9-3145 DR is strong and inexpensive. You may need to slightly clearance the inside of the timing cover. A Cloyes 9-3157 is a single roller that will fit with no modifications. I'm assuming you read through the list of things needed for the conversion and know you can't retain the stock cam.
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Old Feb 27, 2013 | 09:05 PM
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I got a LE cam in it waiting so I should be good.

Last edited by maromatt; Feb 27, 2013 at 10:00 PM.
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Old Mar 1, 2013 | 06:00 PM
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Originally Posted by shbox
Cloyes 9-3145 DR is strong and inexpensive. You may need to slightly clearance the inside of the timing cover. A Cloyes 9-3157 is a single roller that will fit with no modifications. I'm assuming you read through the list of things needed for the conversion and know you can't retain the stock cam.
I think im going with the cloyes one part number is 9-3145 and the other is 9-314-5, not sure why that is
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