Biggest cam with .055 milled heads?
TECH Veteran
Joined: Aug 2002
Posts: 4,055
Likes: 1
From: Hartsdale, NY
Re: Biggest cam with .055 milled heads? Hey Hawked one:
Is this ASA cam for street use - probably not, right.
Any other suggestions? I'm stumped; SDPC told me they sell 60 pairs a month. These must all go to racers since I can only find a couple of guys on the board with the same heads.
Is this ASA cam for street use - probably not, right.
Any other suggestions? I'm stumped; SDPC told me they sell 60 pairs a month. These must all go to racers since I can only find a couple of guys on the board with the same heads.
TECH Fanatic
Joined: Dec 2002
Posts: 1,084
Likes: 0
From: Bring it........ b*tch
Re: Biggest cam with .055 milled heads? If you want a bigger cam with those heads, the ASA cam would be ok. I wouldn't say it's designed for "street use" but 2002nhraformula was running it on the street I believe. I don't have any first hand experience, but it doesn't seem all that huge - just a lot of exhaust duration so it will be fairly lumpy I'd imagine. Get some steeper gears like 3.73's and I'm sure it wouldn't be bad.
If you want to be really hardcore get the Grand-Am Cup, 239/251 cam. <img border="0" alt="[evil]" title="" src="graemlins/gr_devil.gif" /> It was engineered by GM for those exact CNC LS6 heads on a 346 shortblock and can produce 470RWHP with those heads and LS6 valves/springs.
If you want to be really hardcore get the Grand-Am Cup, 239/251 cam. <img border="0" alt="[evil]" title="" src="graemlins/gr_devil.gif" /> It was engineered by GM for those exact CNC LS6 heads on a 346 shortblock and can produce 470RWHP with those heads and LS6 valves/springs.
Launching!
Joined: Jul 2002
Posts: 246
Likes: 0
From: pa
Re: Biggest cam with .055 milled heads? I'm not sure how much mine were milled but, the chambers are 60 cc. 11.4 compression
my cam is a 224/228 .581/.588 112LSA (XER lobes)
my PTV clearance is .080 and .120
Anyway I'd like to know more about that big cam one of you just mentioned. What are the rest of the specs? Sounds interesting, is it streetable?
I'm not happy with my power numbers. I expected more. Then again Cartek only did 3 pulls when they tuned it, so maybe there's more in it. The idle is really screwed up too.
<small>[ April 07, 2003, 03:13 PM: Message edited by: muscratmauler ]</small>
my cam is a 224/228 .581/.588 112LSA (XER lobes)
my PTV clearance is .080 and .120
Anyway I'd like to know more about that big cam one of you just mentioned. What are the rest of the specs? Sounds interesting, is it streetable?
I'm not happy with my power numbers. I expected more. Then again Cartek only did 3 pulls when they tuned it, so maybe there's more in it. The idle is really screwed up too.
<small>[ April 07, 2003, 03:13 PM: Message edited by: muscratmauler ]</small>
TECH Fanatic
Joined: Dec 2002
Posts: 1,084
Likes: 0
From: Bring it........ b*tch
Re: Biggest cam with .055 milled heads? Here's the info straight from SDPC, it doesn't say but this cam is designed to be used with the LPE/GM CNC LS6 heads on a 346 shortblock. GM Grand Am Cup racing cam.
Duration @ 0.050" (I/E): 239 / 251
Lift (I/E): 0.570 / 0.570
Lobe Separation: 106
RPM Range: 4000-7000
Cam Type: Hydraulic Roller
"This hydraulic roller camshaft is designed by the GM Racing Division for road racing applications in the Grand-Am series. Serious duration and lift will require that the piston to valve clearance be checked as well as major PCM modifications. For best torque, install the intake centerline 105 for best power install at 107. GM recommends lightweight valves and valve springs from the 2002-03 LS6 engine for use with this camshaft."
You'd have to be someone who is willing to sacrifice driveability and idle quality (I'm sure it's quite chaotic) in exchange for the massive power this cam can provide with the CNC heads. You probably could get it to behave to an acceptable level with real good tuning and some 4.10's or so.
There's not too many people out there most likely that have enough of a sack to run a cam this big with a stock shortblock though. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Duration @ 0.050" (I/E): 239 / 251
Lift (I/E): 0.570 / 0.570
Lobe Separation: 106
RPM Range: 4000-7000
Cam Type: Hydraulic Roller
"This hydraulic roller camshaft is designed by the GM Racing Division for road racing applications in the Grand-Am series. Serious duration and lift will require that the piston to valve clearance be checked as well as major PCM modifications. For best torque, install the intake centerline 105 for best power install at 107. GM recommends lightweight valves and valve springs from the 2002-03 LS6 engine for use with this camshaft."
You'd have to be someone who is willing to sacrifice driveability and idle quality (I'm sure it's quite chaotic) in exchange for the massive power this cam can provide with the CNC heads. You probably could get it to behave to an acceptable level with real good tuning and some 4.10's or so.
There's not too many people out there most likely that have enough of a sack to run a cam this big with a stock shortblock though. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
TECH Addict
Joined: Jul 2002
Posts: 2,261
Likes: 0
Re: Biggest cam with .055 milled heads? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> Anyway I'd like to know more about that big cam one of you just mentioned. What are the rest of the specs? Sounds interesting, is it streetable?
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Grand Am Cam- developed by GM for the World Challenge Cup Series. Specs are 239/251 duration, 0.570" lift, 106 LSA. Asymmetrical lobes.
Don't think it will be easy to drive on the street in traffic. Everything is a trade off, sometimes we have to make sacrifices. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Grand Am Cam- developed by GM for the World Challenge Cup Series. Specs are 239/251 duration, 0.570" lift, 106 LSA. Asymmetrical lobes.
Don't think it will be easy to drive on the street in traffic. Everything is a trade off, sometimes we have to make sacrifices. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Re: Biggest cam with .055 milled heads? grand am cam, peaks a little over 7 grand. I am guessing from the stats between the cam and those ls6 heads, they are made for a traditional split cam. Be easy on the lift since they are milled, but ls6 heads are known for there flowrate from .500 lift to .600 lift.
Trending Topics
TECH Veteran
Joined: Aug 2002
Posts: 4,055
Likes: 1
From: Hartsdale, NY
Biggest cam with .055 milled heads? My LS6 heads have been milled .055. What is the biggest cam I can go with here? Car is for street use.
I would like to avoid flycutting the pistons or using a real thick head gasket...
Is the ASA cam a dog for the street?
I would like to avoid flycutting the pistons or using a real thick head gasket...
Is the ASA cam a dog for the street?
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo TECH Veteran
Joined: Aug 2002
Posts: 4,055
Likes: 1
From: Hartsdale, NY
Re: Biggest cam with .055 milled heads? Thanks guys. Please remember this is my STREET car...
I would like something bigger than the GM Hot Cam but it still has to be driven in trafic (M6) and hopefully pass emmissions..
Thanks...
I would like something bigger than the GM Hot Cam but it still has to be driven in trafic (M6) and hopefully pass emmissions..
Thanks...
Re: Biggest cam with .055 milled heads? I'd think that a 560 lift/ 222 up to 228 duration camshaft might work, but you might need to still clay the heads, why not go thru a shop like MTI for the cam, they have had some .050+ milled heads out there...
Re: Biggest cam with .055 milled heads? I just reread your last post.
If you need to pass emissions, I would get something like a 224/224/114lsa with 560 lift. I think that would address most of your goals.
Or, I8Cobra dynoed 420rwhp with the C2 cam and some worked LS6 heads, very impressive numbers and the car does not lope too much... it's a daily driver... I think this cam is 222/222//112 or 114.
The difference between a 560 lift cam and a 590 lift cam will not be huge... at it's worst, and I have never seen any quantify it, I can't see it being worth as much as 10rwhp...
The hotcam does not have much lift at all I would end up running 1.8 rockers to compensate.
Big 226-228 stuff might not easily pass emissions so I would assign them too high a risk factor for you.
If you need to pass emissions, I would get something like a 224/224/114lsa with 560 lift. I think that would address most of your goals.
Or, I8Cobra dynoed 420rwhp with the C2 cam and some worked LS6 heads, very impressive numbers and the car does not lope too much... it's a daily driver... I think this cam is 222/222//112 or 114.
The difference between a 560 lift cam and a 590 lift cam will not be huge... at it's worst, and I have never seen any quantify it, I can't see it being worth as much as 10rwhp...
The hotcam does not have much lift at all I would end up running 1.8 rockers to compensate.
Big 226-228 stuff might not easily pass emissions so I would assign them too high a risk factor for you.
