1991 RS 305

Car Craft used this cam with the Vortec heads and it made 325 HP. Comp Cams XE262H-10 "Xtreme Energy" hydraulic flat tappet cam. 218/224 dur @ 0.050, .462/.469 lift, 110 deg LS

Is this cam a good choice, or would it run like crap?
They got HUGE gains by switching to this cam!
Thanks, Matt

Buck268

In your L03? You got a roller set up stock, so why would ya wanna go back to flat tappet?

89formula#1

well i am thinkin of a flat tappet and switchin to a carb just cause the flat tappets have so many more choices and are so much cheaper. its say 110 for cam and lifters then 70 for pushrods and your set, versus the 250 for a roller cam

Buck268

I see your point. How about an LT4 HOT cam? (not that I am an expert, but just my $.02)

fast_broker

iTrader: (1)

Comp cam/lifter sets are about $160... Worth the money, though. DO NOT GO CHEAP ON THE CAM/LIFTER SET TO SAVE 50 bucks or so!!!!

1991 RS 305

sorry, still learning about cams, I figured since it worked so great for them it must be a good cam.

What is the difference between roller and flat tappet cams, I know that roller cams have less friction, but why?

Buck268

As the name implies, roller setups have rollers on the lifters, and on the rocker arms. They reduce friction like a wheel has less friction than a skid. They last longer, and free up a SMALL amount of power. Flat tapet just act like the skids I mentioned.
Does that clear it up? I am not great at explaining stuff!

1991 RS 305

Thanks, that explanation makes perfect sence!!

Buck268

Cool!:lala:

89formula#1

i am gonna switch my tbi over to a carb and i am gonna run a 650 holley.edelbrock performer intake, and maybe the vortec heads when i get the money. what do u suggest for a cam i have a roller setup

NJ SPEEDER

if you are planning to keep you 305 and your roller set up a LT4 stock cam is a good choice. or a stock LT1 cam can be had for cheap.
i think if you ditch the tbi you will be sorry, the digital controls are capable of making a more drivable and equal if not greater power than a carb.

later
tim

TBIWorks

iTrader: (2)

I'm going with the GM ZZ3 cam 208/221@ .050" , 480:510 I think. It is roller, and can be purchsed from Jim Pace for 180 bucks.

fast_broker

iTrader: (1)

TBIworks, I have a ZZ4 cam for sale when I am done testing my configurations. ie, Less than a month or so. Brand new when I bought it. May have 10-20 hours on it when I am done. Well taken care of, with Mobil-1 to boot.

email me if you are interested...