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

opti question

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Old Jan 17, 2009 | 09:58 AM
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impalaSS's Avatar
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anybody have a link to a write up or tell me how you can use the opti on an lt1 when using a carb


i totaled out my 383 caprice so i'm putting it in something else and if i can run an opti then i can shove the motor back more
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Old Jan 17, 2009 | 10:24 AM
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The opti is totally dependant on the computer to command the actual timing. Is not like an HEI where it is physically set, going to need a computer of some sort to control it and that computer will need TPS and MAP inputs. In the end it might be easier to consider keeping the injection. That r deal with the fact you need a rearmount distributor.

There are other alternatives but the price goes way up.
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Old Jan 17, 2009 | 02:02 PM
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Why not keep the injection????? I am SOOOO glad that I did not listen to everyone elses opinion when I shoved the LT1 in my GMC and kept the EFI!!!

Just a thought!

Mike
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Old Jan 17, 2009 | 09:27 PM
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Originally Posted by schwoch1
Why not keep the injection????? I am SOOOO glad that I did not listen to everyone elses opinion when I shoved the LT1 in my GMC and kept the EFI!!!

Just a thought!

Mike


its gonna be an all out drag car
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Old Jan 17, 2009 | 11:15 PM
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Originally Posted by impalaSS
its gonna be an all out drag car

Gotcha, use a crank trigger and a front mount distributor, or the DIS setup from ELectromotive, neither one needs the distributor in the rear. The opti is heavily relaint on the ECM!!!

Good luck!!

Mike
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Old Jan 18, 2009 | 08:44 AM
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You can run a crank trigger/msd box and a gutted opti. Pretty simple set-up that works.
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