LT1 to LT4
Thread Starter
Race Director
Joined: Feb 2003
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From: Lake Wylie SC
LT1 to LT4
Fuel rail question. Will the 95 fuel rail hook up to the 92 fuel lines without modifications?
Swapping to the 95 opti-spark, I have the timing cover for the 95 opti, but isn't there a new wiring harness required to adapt to the 95 opti? Does the 92 ECM have the capibility to run the 95 opti?
I'm still collecting parts for this upgrade from a 92 LT1 to a top end LT4 with a GM hotcam. I'm trying to collect all the parts and find all that is needed before I attempt this project. I hope it goes further than just a pipe dream.
Swapping to the 95 opti-spark, I have the timing cover for the 95 opti, but isn't there a new wiring harness required to adapt to the 95 opti? Does the 92 ECM have the capibility to run the 95 opti?
I'm still collecting parts for this upgrade from a 92 LT1 to a top end LT4 with a GM hotcam. I'm trying to collect all the parts and find all that is needed before I attempt this project. I hope it goes further than just a pipe dream.
Le Mans Master
Joined: Aug 2000
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From: Australia
Opti connectors are different on the short factory harness that goes between the Opti and main harness connector.
IIRC
the only difference in fuel rails is between what chassis they originally came out of; F-Bodies exit to opposite side to Vettes.
Thread Starter
Race Director
Joined: Feb 2003
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From: Lake Wylie SC
Thank you mate, BTW what is IIRC?
Le Mans Master
Joined: Aug 2000
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From: Australia
Foster's beer only drunk now by people living outside of Australia who think they are drinking a " real Australian" beer even though it is most likely brewed and bottled in their own country
Thread Starter
Race Director
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From: Lake Wylie SC
I guess we did get off the subject.
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From: Brunswick Georgia
LT1/LT4 newbie
I am newbie round here and just got my 94 6 speed. I am 3rd owner, original owner went to LT4 stuff(plus other upgrades) years ago. So I do not know what a LT! is like, but this LT1/LT4 feels faster than my 99 Z28 LS1 6 speed I sold recently. It can be a lil on the rowdy side at low speeds though......
Le Mans Master
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From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
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St. Jude Donor '12
Once you have decided look at the Opti wiring diagrams in both FSM.
Or do a search at the guru for posts that reasponded to me back in January when I had to do the same thing.
Yes the 92 ECM handles the newer OPTI just fine.
Thread Starter
Race Director
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From: Lake Wylie SC
You will need the new style opti harness. Then decide which connector you are going to change. Will it be change the really old one attached to the intake that goes to the ECM? Or the really new one that came with your new harness?
Once you have decided look at the Opti wiring diagrams in both FSM.
Or do a search at the guru for posts that reasponded to me back in January when I had to do the same thing.
Yes the 92 ECM handles the newer OPTI just fine.
Once you have decided look at the Opti wiring diagrams in both FSM.
Or do a search at the guru for posts that reasponded to me back in January when I had to do the same thing.
Yes the 92 ECM handles the newer OPTI just fine.
Le Mans Master
Joined: Mar 2001
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From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
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St. Jude Donor '12
Cut the old connector off my Dynaspark harness
Cut the new connector off
Spliced the new pigtail to the old connector
THe old pigtail won't work because its too short at the opti end - at least that was the way I rememeber it. Been too many years since I had the oem opti on the 92.
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