How many times does the engine fire in one revolution? Do all 8 cylinders fire in one revoultion, just one, or somewhere in between?

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82 Camaro:350, Erson cam, ported heads,Comp Cams 1.6:1 rocker arms, Edelbrock Performer RPM intake, Holley 600cfm, Crane Hi-6 ignition,
TH350 tranny with 2500 stall, Eibach Pro Kit, SLP 1 3/4" headers with 3" Flowmaster exhaust

 

It takes 2 revolutions for ALL cylinders to fire once. All four stroke engines need 2 revolutions to complete one operating cycle.

 

Thanks. I was just curious.

 

So to answer your question a bit better, A 4 stroke V8 will have a cylinder fire every 90 degrees of crankshaft rotation. This means in one revolution of the crankshaft, 4 cylinders will have fired.

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87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block (times are for the current engine)

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