typical road race cam profiles? - LS1TECH - Camaro and Firebird Forum Discussion

Road Racing Road Course | Autocross

typical road race cam profiles?

Thread Tools Search this Thread
Old 06-16-2005, 05:00 PM   #1
TECH Addict
Thread Starter
iTrader: (27)
gnx7's Avatar
Join Date: Nov 2002
Location: San Francisco, CA
Posts: 2,842
Default typical road race cam profiles?

Hey guys... I'm getting more and more into road racing and looking at replacing my cam with something smaller I believe.

Here is my combo:

'99 shortblock with Katech rod bolts 23K miles
AFR 205's milled .024", MLS gaskets
TSP 233/239 .603/.600" 112LSA cam
LS6 intake, ported TB
March UD pulley, Fidanza alum flywheel, T56
Jagsthatrun (JTR) 1 7/8" LT headers, Magnaflow dual 3" with cats/Xpipe/muffs
3:90 gears thru RX-7 IRS with alum driveshaft
no p/s or a/c
91 octane, 26* timing

This cam when compared to my buddies 225/225 .589" lift cam made 40rwtq less at 2500-3500rpm and about 20-30rwtq less from 3500-4500rpm with nearly identical mods (I have AFR's and he has Stage 3 GTP 5.3 heads being the only difference aside from the cam). Only at 6200rpm did my cam finally more power than his and only a few percent more. He made 428rwhp/405rwtq..... I only rev my cam to about 6,000 on the road courses to keep coolant temps down and when passing to 7100rpm if needed.

On the road course I can blow the tires off in 2nd when exiting corners if I try... but most of my corners require 3rd gear and traction is good. I have 285/30/18 Mich Pilot Sport Cup tires I'm running all around and once these wear out some Hoosier R3S03's same size.

What cam are you guys running and what do you think about me running a 224/228 cam? I can get a used one for $200. I think the powerband won't be as high and I'll gain a little more torque back.

Other mods are in my sig. I have 3:90 gears.
gnx7 is offline   Reply With Quote
Old 06-21-2005, 07:48 PM   #2
TECH Senior Member
iTrader: (9)
NataSS Inc's Avatar
Join Date: Dec 2001
Location: Bellevue WA
Posts: 5,393

Be careful with the "off the shelf" LS1 cams. Especially the big ones. The ramp rates on the lobes are brutally fast and will eat your valvetrain alive. There are only 2 cams designed for the LS1 that were meant for road race use. The ASA cam and the Grand Am Cup cam. You wont see the peak #'s with these cams like you do with the others, what you will see is oodles of power "under the curve". Most Ls1 cams are "peaky". These ones are not. They both have big duration, narrow LSA and decent lift. I dont know about he ASA cam but the GAC has an asymetrical lobe profile. Alot softer on the valve train.
NataSS Inc is offline   Reply With Quote
Old 06-21-2005, 10:15 PM   #3
TECH Addict
Racehead's Avatar
Join Date: Nov 2001
Location: LaConner WA
Posts: 2,663

It sounds to me like the ASA cam would be a very good choice for you. I've had mine in my car for a month or so and so far I love it. It'll easily make power to 6500+ rpm's and great torque even from 2500 rpms's. The valve train is just as quiet as it was with the stock cam. You could easily run 1.8 rockers as well to add some lift if you wanted to. I'm going to leave mine as is though. Lot's of twist in the area's you're running yours in for sure. A custom cam might also be an option you might like to look into.
Racehead is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
AFR small bore 225s vs AFR 205s on a 346. Patrick G Generation III Internal Engine 65 08-03-2015 12:21 PM
1988 Monte Carlo SS LS7 stock short block H/C/I belts out 660 RWHP N/A on 92 Octane! John B Dynamometer Results & Comparisons 80 08-05-2014 10:32 PM
Converter too loose? CamaroFreakls1 Drag Racing Results 34 08-06-2013 01:07 PM
June Intake and TB Porting Special [email protected] Generation IV External Engine 25 07-30-2008 04:00 PM
New Dyno #'s what do you think.... BIGBOS Forced Induction 25 02-20-2006 03:16 PM

asa, cam, camshaft, cars, cup, grand, ls1, ls1tech, profiles, race, racing, road, roadcourse

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 08:08 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: