No sighn up strip cams

It almost makesup for the 100-degree temperatures and pizza-only diet.

It's not taking us long to figure out a 347 is the way to go for easy horsepower with a 5.0 engine.

But who wouldn't love standing in the dyno celllistening to 1.3 hp per cubic inch thump out its tune?

To understand how this is done, you need to know about companion cylinders, which are the pairs of cylinders that reach top dead center (TDC) and bottom dead center (BDC) at the same time.

On a four-stroke V-8 that fires every 90 degrees (that’s any production V-8 you’re working on), you can find the companion cylinders by comparing the first half of the firing order to the second half like this:1-8-4-36-5-7-2Cylinders 1 and 6, 8 and 5, 4 and 7, and 3 and 2 are companions: One in the pair is at TDC of the compression stroke at the exact same time that its companion is at TDC on the exhaust stroke.

Over the past few years, nearly every cam manufacturer has introduced 4/7-swap cams for big and small Chevys, all claiming that the change in firing order makes power.

Lunati was the only cam grinder to actually ask us to test a pair of cams to learn for ourselves what the big deal was. Firing Order Basics First, let’s give you a clue what we’re talking about.

I grew up there and still miss those summer storms.

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