Road Racing Cam?

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Apr 16, 2003 | 01:09 AM

o0Dan0o

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Road Racing Cam?

I am building up my 2000 WS6 for road racing, and need some help choosing a cam. First, when the new cam goes in, I will have done pretty much everything but touch the short block, and I don't plan on touching the heads for a while. Right now it has a whisper lid, and a Granatelli MAF. By the time I put in the new cam I will have put on QTP LT headers into a custom true dual exhaust with x-pipe(haven’t decided on 2 1/2 inch or 3 inch yet), LS6 intake(unless something better comes out), ported TB, and all the tricks for the cam(new valve springs & retainers, rocker arms, pushrods, lifters), and a tune to make everything run smoothly, am I missing anything? Here’s the trick though, its a road racer, so I need a pretty large and flat power band, from 2500-6500(preferably 1500-6500), I am willing to take a loss in total power to achieve this. Also, since I will average 20-30 minutes on the track, I need a very reliable setup that can turn 4500+ RPM's all day, and hit 6500 many many times. I'm fairly new to the LS1 game, so all help is appreciated! Thanks in advance.
Dan

Apr 16, 2003 | 02:57 AM

Mudge

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Re: Road Racing Cam?

The cam is not really the "reliable" part that you have to worry about, other than ramp rates and lift vs duration. I would look into some rod bolts as well, because a few people are losing them at high RPMs, and extended duty is an increased risk.

Apr 16, 2003 | 03:28 AM

BADFNZ

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From: Dyess AFB, TX

Re: Road Racing Cam?

Without reading your book there, I'm going to say if you want a road racing cam you'll want something that has good low and mid range power. For that you'll want something with a higher LSA. Try the LPE cam from Lingenfelter. Has an LSA of 118.5 if I'm not mistaken but has a high lift.

Apr 16, 2003 | 02:02 PM

o0Dan0o

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Re: Road Racing Cam?

Hehe, book eh? Well, here’s the short version. Mods: Lid, MAF, TB, LS6 intake, LT headers, custom true dual exhaust, dyno tune. What cam will make a solid powerband from 1500-6500 rpms, I am willing to sacrifice peak numbers to get a better powerband.
Dan
EDIT: P.S. The car is a M6, so idle quality isn't a big issue.

[ April 16, 2003, 02:09 PM: Message edited by: o0Dan0o ]

Apr 16, 2003 | 03:03 PM

Cal

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Re: Road Racing Cam?

OK here's the cam you want: Comp XR273HR, 220/224 .530/.534 112 LSA. Powerband: 1600 to 6600.

Apr 17, 2003 | 10:43 AM

93Polo

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Re: Road Racing Cam?

Are you looking for track events or autox?

I am interested too. Lots of drag racing tech but not many of us road racers <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Midrange is everything on a road course. I'd like peak power at 6k to 6,300 with a slow drop off. 3k to 6k is were you want the power with tq. to pull off the turns.

I was thinking TR224 or maybe an ASA cam with a little more lift to take advantage of head flow 560? range, heard the midrange was great and I love the idle. How long would LG's G5X-1 live with CC987 springs out on open track events? Just a few thoughts. TTT <img border="0" alt="[driving]" title="" src="graemlins/gr_driving3.gif" />

editied since I can't spell

[ April 17, 2003, 10:44 AM: Message edited by: 93Polo ]

Apr 17, 2003 | 01:03 PM

Gary Z

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Re: Road Racing Cam?

I’m no road racer but I don’t think that a wide power band is the right idea. With a stock bottom, 3000 to 6000 seems more like it to me. Forget about pulling from 1500 with an LS1. You should post this question in the Road Racing section.

[ April 17, 2003, 01:13 PM: Message edited by: Gary Z ]