Opti on top: working great :)
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From: Goochland, Va.
I have seen this done before, but they used a distributor cap and regular wires...not the single coil deal.
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This is a 1984 buick regal. The owner has always been a carburetor guy. I convinced him that he will make more power with fuel injection.So I did the harness and tuning for him. The reason I made the opti on top is that this engine is a 383ci old block- not a LT1- so we cant fit the LT1 opti in its original place.The owner didn't want to spend money on the conversion and change the front end. So I thought this might work. and It did. The owner is happy about the conversion and said that he is not going back to carburetor again.
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From: VA
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From: Engineerland
Question of the day is how did you index it with the engine though?
I have seen this done before but with a modded lt1 timing cover and just the optical section of the opti and using a crab cap dist to fire the plugs with power from a stock coil and icm, but that gets set up the same as a stock lt1 opti when bolted in place.
I have seen like what you have done before, but nobody has ever been able to tell me how you line the thing up so everything is accurate like a stock opti install.
I have seen this done before but with a modded lt1 timing cover and just the optical section of the opti and using a crab cap dist to fire the plugs with power from a stock coil and icm, but that gets set up the same as a stock lt1 opti when bolted in place.
I have seen like what you have done before, but nobody has ever been able to tell me how you line the thing up so everything is accurate like a stock opti install.
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well, its a LT1 block, but the rotating assy is not. The crank pully is too close to the timing cover.
Heads are GM LT4, LT4 intake and 306 compcam.
To line the thing up, what I did is basicly installed the dist-opti whit piston 1 on tdc- rotor to #1 and turn it left and right till the engine started, hold it there, checkd the timing on the scan tool, compared it with whats in the timing tables and used a timing light to make sure that evrything matched. when it did, I made a bracket attached to the base of the dist-opti ond bolted to one of the holes in the intake - where the egr used to be. I will take more pics of that soon.
Heads are GM LT4, LT4 intake and 306 compcam.
To line the thing up, what I did is basicly installed the dist-opti whit piston 1 on tdc- rotor to #1 and turn it left and right till the engine started, hold it there, checkd the timing on the scan tool, compared it with whats in the timing tables and used a timing light to make sure that evrything matched. when it did, I made a bracket attached to the base of the dist-opti ond bolted to one of the holes in the intake - where the egr used to be. I will take more pics of that soon.