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Just found out only 3 cylinders work in my 1970...

1591 Views 19 Replies 10 Participants Last post by  Fleetwood70, 
F
... no wonder I wasn't impressed with its power.

It's a 472ci, all cylinders have about 9.5:1 compression.
Took out a timing light and it flashed on only 3 wires.
I took distributor apart, cleaned corroded breaker points, adjusted a screw, but it still fires on only 3 of them.
What could it be? A capacitor, wires, what else?
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albymangled
millions of miles were driven without the need for HEI....

just replace the ignition parts required and it'll be fine....

dizzy cap and rotor kit around $10 to $20

http://www.rockauto.com/catalog/x,c...ch+for+1970+CADILLAC+FLEETWOOD+7.7L+472cid+V8

can't believe how cheap you guys get auto parts in the US....
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albymangled
You'll need a HEI from a newer Cad.

And different leads to the points dizzy...

The main advantage with it is reliability over time.

The points system requires greater maintenance.

HEI will not give anything more than marginal increases to HP or mileage.
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