zz4 cam upgrade

[Mike Brichta]

 

I am interested in doing a cam upgrade to my zz4 engine and was wondering if anyone out there has done this already. I was at a cruise last night and was talking to a guy who has a zz4 engine that had a cam upgrade done and he said he gained around 60hp but doesn't know any of the details. He said he had the following done to his stock zz4 engine:

 

- replaced the cam

- added roller rockers

- switched the intake

 

Anyone know where I can find out what my options are?

 

Thanks!!

Mike

[Sam (Bones)]

a different cam and intake would make a big difference

 

ZZ4 350 TURN-KEY TECH SPECS

Part Number:

19201330

 

 

Engine Type:

Chevy Small-Block V-8

Displacement (cu. in.):

350

Bore x Stroke (in.):

4.000 x 3.480

Block (P/N 10105123):

Cast-iron with four-bolt main caps

Crankshaft (P/N 12556307):

Forged steel

Connecting Rods (P/N 10108688):

Powdered metal steel

Pistons (P/N 10159436):

High-silicon aluminum with offset pins

Camshaft Type (P/N 10185071):

Steel hydraulic roller

Camshaft Lift (in.):

.474 intake / .510 exhaust

Camshaft Duration (@.050 in.):

208° intake / 221° exhaust

 

 

Cylinder Heads (P/N 12556463):

Aluminum; 58-cc chambers

 

 

Valve Size (in.):

1.940 intake / 1.500 exhaust

Compression Ratio:

10:1

Rocker Arms (P/N 10089648):

Stamped steel

Rocker Arm Ratio:

1.5:1

Recommended Fuel:

92 octane

Ignition Timing:

Base 10° BTDC, 32° Total

Maximum Recommended rpm:

5800

Balanced:

External

[Mike Brichta]

Hey Sam,

 

The previous owner already switched the intake to a Dart intake so I will probably keep that on the engine. What would you recommend for a cam? I see lots of guys use Voodoo and Lunati. Any thoughts?

 

Thanks!!

Mike

[Jason72]

Mike, I have a gm hot cam and a set of 1.6 scorpion narrow body rollers and the springs slightly used I would be willing to part with...