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Mike S.
Mike S., Classic Car Mechanic
Category: Classic Car
Satisfied Customers: 7568
Experience:  A.S.E. certified with 25+ years experience.
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Chevrolet El Camino: installed a msd streetfire ignition on

Customer Question

installed a msd streetfire ignition on a 1985 350 with no smog equipment not sure if i should hook up the wires from the dist to the ecm runs ok without but seemed to have more power with the stock equipment
Submitted: 2 years ago.
Category: Classic Car
Expert:  Mike S. replied 2 years ago.
I don't even see the 1985 El Camino even coming with a 350. What did this engine come out of? Is it fueled injected, carb, tpi, tbi, multi,etc?
Expert:  Anthony replied 2 years ago.
Hello!Have you tried it with the ECM hooked up along with the MSD?
Customer: replied 2 years ago.
no because i thought it might screw up the advance by having both sending info im not sure if i should i dont want to short anything
Expert:  Anthony replied 2 years ago.
The advance is controlled by the computer when its plugged in. When unplugged, theres less advance. Try plugging it in and setting the timing to base specs then run it. Is it any better now?
Customer: replied 2 years ago.
the msd has has an advance of 20 if i plug it in im not sure which will be controlling it also mike if your reading this still the 305 was replaced with a 383 stroker carburated also i need the consistancy and higher output with the nos
Expert:  Mike S. replied 2 years ago.
I would just drop in a GM coil in cap HEI and be done with it. The one with vacuum and mechanical advance. No computer.