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

Summit opti

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Old 07-01-2008, 09:26 PM
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Default Summit opti

any good http://store.summitracing.com/partde...&view=1&N=700+
Old 07-01-2008, 09:27 PM
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yup. that looks like a OEM ac-delco one what year is your car?
Old 07-02-2008, 08:19 PM
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looks and are, are two different things.
Old 07-02-2008, 08:38 PM
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I would get a stock ACDelco unit before I would buy that. I've never had issues with the ACDelco. If you go on ebay you can get them for a good price but make sure its legit not the elcheapo **** ones they sell on there.
Old 07-02-2008, 08:41 PM
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theyre made different. atleast the 93-94 opti's are. on a factory 93-94 the drive pin is seperate. the summit opti has the drive made onto the center of the opti. the problem i've seen is, the cap doesnt seem to have as much clearance and the opti rubs up against it. anyone else had this problem???
Old 07-03-2008, 07:53 PM
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the year is 94
Old 07-03-2008, 08:17 PM
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It might be ok but to be safe I'd get an AC Delco or a Delphi. A lot of the AC Delco ones were made by Delphi and the Delphis are often a lot cheaper so I'd probably go that route.
Old 07-04-2008, 11:21 AM
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Originally Posted by lt1taracing
theyre made different. atleast the 93-94 opti's are. on a factory 93-94 the drive pin is seperate. the summit opti has the drive made onto the center of the opti. the problem i've seen is, the cap doesnt seem to have as much clearance and the opti rubs up against it. anyone else had this problem???
Yeah... You could say I've had this problem...



Granted, this was a reman opti with an MSD Cap/Rotor on it. Same issue though, the drive pin was a little long, pushed the rotor into the cap, and BOOM!!!
Old 07-04-2008, 02:04 PM
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Originally Posted by StealthFormula
I would get a stock ACDelco unit before I would buy that. I've never had issues with the ACDelco. If you go on ebay you can get them for a good price but make sure its legit not the elcheapo **** ones they sell on there.
x2...
Old 07-04-2008, 02:54 PM
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Spend the money on the factory one.You will be miles ahead
Old 07-06-2008, 04:11 AM
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the summit one is a reman one no matter what they say. we put a summit opti in a buddys and we just pulled it off 1k later bc it failed. we took it apart and it had finger prints all over it. summit is giving us a new one of course since there customer service is tip top
Old 07-10-2008, 03:38 PM
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I justed picked up a brand new delphi for 277 with free shipping. So im good now.
Old 07-10-2008, 03:47 PM
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Yea I called summit when I was in need of a opti and they wouldnt even tell me the source of them . I got a Delphi unit to be safe off ebay
Old 07-10-2008, 10:07 PM
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Originally Posted by saint_fan77
I justed picked up a brand new delphi for 277 with free shipping. So im good now.

the partsladi on ebay has delphis for for $240 shipped
Old 07-11-2008, 09:07 AM
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Originally Posted by buffman
the partsladi on ebay has delphis for for $240 shipped
+1!!!!!!!!!!
I got an AC Delco opti from "thepartsladi" on ebay for $280 shipped
I bought a Delphi opti from the same place for a buddy for $230 shipped.
Both are OEM and came in the OEM packaging.

Just so you know, I bought a JEG's brand opti before I got the AC Delco, "looked" like OEM, but it failed after two weeks, rotor detached!!!
My buddy got an AllIgnition opti before he got the Delphi, rotor screws backed out on him as well.
OEM is the only way to go, go with 'thepartsladi".
Old 07-11-2008, 09:42 AM
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+3 for thepartsladi thats where I got mine
Old 07-11-2008, 09:21 PM
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i went with the delphi and from the sounds of it should be happy. I can't believe the Delco I had after 2yrs is failing, but from what I've finally found, its the source of my problem.

I remember buying Vented Delcos from Dal for $219 (they were $199 or less at one time). Now they're at least $313 + Core (except thepartsladi)

Matt
Old 07-15-2008, 08:27 PM
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Originally Posted by lt1taracing
theyre made different. atleast the 93-94 opti's are. on a factory 93-94 the drive pin is seperate. the summit opti has the drive made onto the center of the opti. the problem i've seen is, the cap doesnt seem to have as much clearance and the opti rubs up against it. anyone else had this problem???
Mine just came in the mail and the drive pin is in it but comes out is that good.
Old 07-15-2008, 08:45 PM
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Do you guys think it is worth caming a motor with 110,000 miles
Old 07-15-2008, 09:09 PM
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Originally Posted by saint_fan77
Do you guys think it is worth caming a motor with 110,000 miles
I would do a compression and leak down test. If all checks out, then go ahead.



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