I put this cam in my engine when I rebuilt it. The person that I bought my engine set from recommended this one. My problem is that I don't know how to read the numbers to see what kind of cam it is. People always ask what cam it is and the only thing I know is that it is a high performance street cam.
Here's the numbers:
Cam Lift: .311 (int) .325 (exh)
Valve Lift: .467 (int) .488 (exh)
Lobe Center: 107 (int) 117 (exh)
SAE Duration: 298 (int) 304 (exh)
.050 Duration: 224 (int) 234 (exh)
What do I tell people?
Is this the right cam for my set-up?
The car runs great, nice and lumpy at an idle.
I just hope my carburator is big enough, I noticed alot of people with 700cfm's or bigger.



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1988 Camaro Sport Coupe: Orignally: 305 TBI 700r4
Now: 1974 355CI, 2bolt, Badger Flat Head Pistons w/ valve relief, Melling high performance street cam, GM Cast Vortec Heads, Edelbrock RPM Air Gap Intake, Edelbrock 600cfm w/ electric choke, GM HEI w/ vacuum advance, Weiand Low Profile Air Cleaner, Mallory 5 port Fuel Pressure Regulator, 3.73 Posi, Mr. Gasket Throttle Cable Bracket, Corvette Shift Servo, 16" IROC Wheels Best Times:60ft 2.26 1/8th 9.68 @ 73.63
https://www.thirdgen.org/rides/index.tgo?action=view&rideid=7480

 

It's a pretty healthy cam. The "valve lift" and ".050 duration" numbers are typically what are quoted to describe a cam. Yours is called "dual pattern" because the intake and exhaust have different lift and duration.

The lift is probably beyond the durability limit of the stock Vortec press-in rocker studs. You might want to consider getting them machined for screw-in, and get upgraded springs as well.

What do you have for exhaust? With decent headers and everything on back, I'd think your 600 cfm carb is holding you back. But, probably not a whole lot.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4, 2300 stall TC. Ported World 305 heads, Crane PowerMax 2050 cam. ZZ4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster 80. 2.93 limited slip. Spohn SFCs waiting to be installed. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).

 

Thanks for your reply. I was a little nervous about the lift being to much for the Vortec. No problems yet.
Right now my exhaust is stock. I have to change the manifolds soon because I can't get to my dipstick. You don't want to know how I check my oil.

 

Actually, I'd love to hear how you check the oil without a dipstick.

 

I know how he checks the oil. He watches the oil pressure gauge! j/k

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86 Camaro Sport
LT1 Induction
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
Moderator at SE ThirdGen

 

Lets just say I do watch my Oil Pressure guage and I change my oil very often to be safe.
I had to rig a dipstick tube because of the 1974 block. The hole is on the drivers side so I had to heat and bend the tube to fit by the manifold. I bent it to much and the stick would not fit. I filled my car with 6 quarts, found a thin cable that will fit down the tube and marked it. Now you know, I am not proud of this.