It's a fairly new cam made by GM Performance Parts.
I'm seriously thinking about replacing my ZZ9 cam in my 89 IROC with one of these.
GM 12370847, the "847" cam
234/242 duration at .050
.539/.558 gross lift with 1.5 rr
112*lsa

-OR-
the CompCam 306
230/244 duration at .050
.510/.540 gross lift with 1.5 rr
112* lsa

Has anyone used these!?
Or am I going to be the guinnea pig?


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AKA Pony Punisher II on all other boards.

89' Iroc-Z
ZZ3 short block-355 TPI ZZ9 cam
NOS 150 shot.
blah...blah...blah..
95' T-56, 6-speed
99' Z' rearend w/ 4.10's
------------------
1997 black Trans AM
A4, bone stock except for the Flowmaster.

[This message has been edited by 89ROC (edited November 30, 2000).]

 

Definitely not for the faint of heart.

 

heh I know .
The car is no longer a dailey driver, and I want the next best thing to a solid roller.

 

The cam you listed will work fine with a mini ram but not the stock TPI. The stock TPI is not designed to rev past 5000 RPM maybe 5500RPM with the correct combination of aftermarket parts. The cam you have listed will make peak power between 6000 RPM and 7000 RPM. Ok for the mini ram, but too large for the stock TPI design.

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1988 Formula 5L/5sp 3.45 gears, SLP cold air kit, MAS gutted, TPIS air foil, TPIS AFPR, MAC headers, Mac under drive pulleys, MAC cat back, Relocated MAT.
Best ET street tires 13.85
Best 60 FT street tires 1.930
Best MPH street tires 99.29

 

that's my combo.

cc306
miniram
355
10.5:1
58mm tb
afr ported from TPIS

should see about 500 at the flywheel and 400-420 at the wheels. I'll have mind done this spring and will let you know as it progresses.

ps Also I'm using DFI and a t-56. that will make it a little more driveable.

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Cody "cyZ28" Young
'84 black on black Z28

355, 5-speed (on the way out. What goes back in, ooohh baby!!)

 

My cam is a little smaller than the 2 you listed and I have to tell youIT GETS ON MY NERVES sometimes. At times Ithink the car is just gonna fall apart while at the stop light, any other than that:
GREAT CAM!

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'88 GTA 350
Headers, catback, free mods, Xtreme energy cam, intake pieces and 2100 RPM TQ

*13.40@102.55 MPH* Best New ET
1.90 Sec, Best 60FT
104.23 MPH, Best Trap Speed

 

F22 Raptor, what cam are you running to get the shakes?

 

What cam are you running F22Raptor?