Read the title, and please reply.

 

It depends..what gear ratio, what transmission, what intake and how will the car be used?
Theres a ton of cams out there that can be suited to your drivetrain..the ZZ4 cam is pretty good to start with...which direction ya wanna go?

 

I'd like to run a low 12 sec. w/ 3.73 in the rear. I plan on putting a Lingenfelter super ram sys. on it w/ a 58mm TB and 24# inj. I have the T-5 trans. I run an 8.7 sec
in the 1/8 now. With the fuel inj. from my stock 305 eng.

[This message has been edited by Free Bird (edited June 15, 2001).]

 

I ran your combo thru engine analyzer, and with just a cam swap on the stock tpi, there was a 20 hp increase with the ZZ-409, LPE 74219, LT4 hot cam, SLP 224-230, and a 30 hp increase with the CC306 and CC-XE 236-242 giving less vacuum also.

With the superram and 58 mm TB, 50 hp was picked up alone.

313 hp @ 4500 with stock tpi
332 hp @ 5000 with LPE 74219 cam only
405 hp @ 5500 with LPE 74219 and superram and 58mm
417 hp @ 6000 with superram, 58 mm tb, and cc306 cam

Driveability will be better with the smaller duration cams, but the bigger cams make more power with more airflow and are peakier.

You decide.

 

I don't believe there is any such thing as a ZZ4 cam. The ZZ4 crate motor comes with whats called the ZZ3 cam. The upgrade is the LT4 Hot Cam and 1.6rr.

------------------
Rob P
89RSconvtZZ4TPI
Edelbrock Hi-Flow Intake
SLP Dual Cold Air Intake
1 5/8" Headers
Semi-Siamesed Runners
MSD6AL/AdjFPR/IROC frnt@rear swaybar/wonderbar/steeringbox/alum drvshaft/ Alston SFC/3:23posi disc rear/MAC LCA/H.Adams Panhard Rod/KYB struts/ shocks/
92Z28convt5spd
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

You guys know you stuff. Thanks a lot!

 

The ZZ4 cam and the ZZ3 cam are the same thing. Its the same cam with two different names depending on which engine its in.

------------------
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

If you want low 12's go with the HOT cam and 1.6 rockers, I have seen this setup and I will be swapping soon

------------------
1991 Z28 ZZ4 with LPE superram base, SLP runners, LPE 58mm T-body,Random Technology ramair,TES headers,24#svo injectors,and just about every other bolt on that there is. Just got a ZEX nitrous kit!

 

My friend has a 1974 Corvette:
ZZ4 w/ LT4 Hotcam, 1.6 Roller Rockers, 4 Speed (M21), 3.55 rear

He originally had the ZZ4 and then he got the cam and rockers for christmas and installed it recently. What a difference!!! 50 Horses easily with the swap... the car pulls much harder now and is easily pushing 400hp.

------------------
1989 IROC-Z
350c.i. TPI
rebuilt 700R4 with shift kit
3'' Monza Pacesetter cat back exhaust (minus the muffler)[SOUNDS OF THIS ON MY WEBPAGE]
new dual cats
3.23 Posi rear
hypertech chip
under drive pulleys
adjustable fuel pressure regulator
K&N Air Filters
Excalibur alarm, keyless entry and remote start
new:
struts, shocks, bearings, distributor, cap, rotor, alternator, battery, regulator
245 ZR16 50 Tires, Rotors and brake pads all the way around

Go to my webpage to find out more about it.
You can also see pictures, and hear sounds as well.
http://go.to/iroc-z

AOL IMer: JRShotliff