LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Need thoughts on Opti

Old May 9, 2008 | 09:06 AM
  #1  
jhashba's Avatar
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Need thoughts on Opti

I bought a 95 Formula which I am converting to a race only. It will run IHRA pure stock. I plan to turn the motor about 6K, maybe a little less. The motor is basically stock except for removing all power, AC, and pollution equipment. I have a 4L60E with 29.5 slicks and 4.10 in the Moser 12 bolt. My question is this, the stock Opti has 106K on it but is still working fine. No codes and the car went 14.5 bone stock. Should I replace the entire Opti or just put a MSD cap and rotor kit on it and go? Also, is it the opinion of the forum that the Opti's for Partsladi on E-bay are real Delphi/Delco units?

Jim Hashbarger
Old May 9, 2008 | 09:16 AM
  #2  
caldercay's Avatar
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Originally Posted by jhashba
I bought a 95 Formula which I am converting to a race only. It will run IHRA pure stock. I plan to turn the motor about 6K, maybe a little less. The motor is basically stock except for removing all power, AC, and pollution equipment. I have a 4L60E with 29.5 slicks and 4.10 in the Moser 12 bolt. My question is this, the stock Opti has 106K on it but is still working fine. No codes and the car went 14.5 bone stock. Should I replace the entire Opti or just put a MSD cap and rotor kit on it and go? Also, is it the opinion of the forum that the Opti's for Partsladi on E-bay are real Delphi/Delco units?

Jim Hashbarger
If you're going to get serious, you might consider the Dynaspark:
http://www.dynaspark.net/products/
Old May 9, 2008 | 10:15 AM
  #3  
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Thanks, I will re-read the rule book to see the exact wording. I believe it says OEM or OEM replacement. Not sure what they would say about the DynaSpark.
Jim
Old May 9, 2008 | 07:44 PM
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don't replace just the cap, if you're going to get that far into it replace it with a new AC Delco/Delphi unit - and as for the partsladi, yes, I bought one and it came in factory packaging
Old May 9, 2008 | 08:38 PM
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Don't fix what ain't broken! Some optis last a VERY long time 150K+ but as soon as you replace it you'll NEVER get another one to last! That's the way it seems to me anyways.
Old May 9, 2008 | 08:50 PM
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I'd run it until it needs to be replaced and then replace the hole opti. Thepartsladi is for real, I have one of their Delphi units and it works beautifully.

BTW - there's still alot more weight you can pull out of that car.
Old May 10, 2008 | 12:01 PM
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Yea, I've got to look at some of the write-ups in the forum on weight reduction. I need to get it down to 3,100 lbs and keep the stuff the rules say I've got to have.
Jim
Old May 10, 2008 | 05:29 PM
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From: Moore Oklahoma
Race cars work best with “new parts” and that is particularly true with LTX engines and their supporting parts (Optis, 4L60Es, Etc.).

There isn’t anything worse than going to a big race and some “nickel and dime” item failing and taking you out of the event (entry fees, hotel, tow vehicle gas, Etc. $$$$).

For example; most serious drag racers will completely tear-down and inspect both their engine and transmission off season every year. The ideological approach “if it is currently good, it will continue to be good” just doesn’t apply with drag racing. “Murphy’s Law” however does apply!

WD
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