I think I understand what an overhead cam is. Even a Double overhead cam. But when I was looking at the specs for the Lexus SC430 that my father is buying I cam to this section on the engine specs:

ENGINE
Designation 3UZ-FE
Type Four Cam, 32 valve V8 with VVT-i
Displacement 4.3 liter, 4,293cc (261 cu. in.)
Bore x Stroke (mm / in.) 91.0 mm x 82.5 mm/3.58 in. x 3.25 in.
Compression Ratio 10.5:1
Horsepower (SAE) 300 hp @ 5,600 rpm
Torque (SAE) 325 ft-lbs @ 3,400 rpm
This information was taken from Toyota's press release website

My question is what is meant by Four Cam

Anyone know?

Tom

 

I would read that as dual overhead cams...which in a V8 would mean four cams.

 

As a guess: two camshafts for each bank of cylinders, one intake and one exhaust. Hence, four camshafts in toto.

 

V8 = two banks of four cylinders = two cams per bank = four cams

 

2 cams on each cylinder bank of the V-8, one for the intake and one for the exhaust. Think of a double overhead cam inline 4.......now double it.

 

you guys are good.

thanks for the clarification.

 

that's when you cam, and then cam, and then cam and then cam again

or living room, bedroom, shower and kitchen...


hehehehe....

 

Amen!

 

not only V-8 with DOHC are four-CAM.

so is any V-shape of Engines (V4?, V6, V12, V16) and boxer engines (F4, F6, F12) have total of Four-Cam when they are DOHC.

 

...then wouldn't "quadruple overhead cam" mean the facial moneyshot in a gangbang?



- Warren