Comp cam or Thunder racing
Thread Starter
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
Comp cam or Thunder racing
Trying to decide between two cams.
Comp cam 224/224 - 568/568 -114 + 4
TR 224/224 - 561/561 - 114
Anybody have any thoughts based on manufactering process, or is it a toss up.
Comp cam 224/224 - 568/568 -114 + 4
TR 224/224 - 561/561 - 114
Anybody have any thoughts based on manufactering process, or is it a toss up.
Melting Slicks
Joined: Mar 2001
Posts: 2,233
Likes: 5
Re: Comp cam or Thunder racing (BOTTLE FED)
Just my opinion, you might not be able to tell them apart. Comp may have even made the cam for Thunder ??? Comp is a major manufacturer of cams. Thunder is a Speed shop/ vendor(very good) They must buy cams from someone made to their specs. Anyone... 
Thread Starter
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
Re: Comp cam or Thunder racing (kumar75150)
Thanks guys, that's why I asked the question; I've heard that comp makes a lot of the cams for the "performance" shops, but I've also heard that a few of the shops do some custom grinding by messing with the overlaps, ramp design etc.
I'm sure the SOP will be negligable, but I was a little curious about the 4 degrees advance that comp is putting in, and if it will be a plus or neative.
I can get one of these cam pacages for almost $100 less than the other, and I wanted to check with you guys that have been there .
Thanks again
I'm sure the SOP will be negligable, but I was a little curious about the 4 degrees advance that comp is putting in, and if it will be a plus or neative.
I can get one of these cam pacages for almost $100 less than the other, and I wanted to check with you guys that have been there .
Thanks again
Le Mans Master
Joined: Jan 2001
Posts: 5,786
Likes: 6
From: Lafayette Colorado
Re: Comp cam or Thunder racing (kumar75150)
for all I know, Thunder might have comp do their cams
Keith
Melting Slicks
Joined: Aug 1999
Posts: 3,452
Likes: 3
From: Spring, TX
Re: Comp cam or Thunder racing (kromberg)
The +4 degrees of advance will make the idle a little choppy it will have a definite lope. The advance in the came changes what the "real" LSA is I think. I would put this same question over on LS1tech.com.
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Melting Slicks
Joined: Aug 1999
Posts: 3,452
Likes: 3
From: Spring, TX
Re: Comp cam or Thunder racing (93Polo)
I'd go with a Futral cam with his Cam Motion lobes
That is what I did. The Comp Cams if they have XER lobes are real hard on valvetrain components particularly the lifters and springs. I have the Futral F4. Look at my sig in the post above for the specs. I gained 50 peak rwhp but the torque curve really improved. The big change was that I improved 5 tenths in the 1/4 mile measured at the same track 2 months apart.
Safety Car
Joined: Sep 2003
Posts: 3,558
Likes: 2
From: Cape Coral FL
Re: Comp cam or Thunder racing (BOTTLE FED)
I just bought the 224/224 .563/.563 @112lsa. One thing to also consider is ramp rate. The Thunder Racing cams have aggressive ramp rates so the effective lift and duration is slightly longer than some other cams with the same lift and duration. I am going to be using this cam with a set of stock 2002 Z06 heads for now. The Z06 springs are good to .575 lift so I assumed this cam should work without changing the springs. Paul advised me to change to a set of Comp 918 springs or I would run the risk of floating the valves a higher rpm's. I'll know more about this cam when I get it next week and look at the card. 
Team Owner
Joined: Jul 2003
Posts: 20,474
Likes: 2
From: Detroit
Re: Comp cam or Thunder racing (gonbad)
I'd go with a Futral cam with his Cam Motion lobes ...... I gained 50 peak rwhp but the torque curve really improved. The big change was that I improved 5 tenths in the 1/4 mile ...
Mark
Melting Slicks
Joined: Aug 1999
Posts: 3,452
Likes: 3
From: Spring, TX
Re: Comp cam or Thunder racing (mdhmi)
Ok this was on a stock motor with a Z06 Airbox.
1/4 Mile: E.T. 13.3 Mph 104
So I added the following:
Borla Exhaust
ASP UD Pulley
Futral F4 Cam
I still had the Z06 box and stock exhaust manifolds and cats
1/4 Mile: 12.8 E.T. MPH 112
This was on the same track 2 months apart but it was much hotter the second time.
I have since added the Halltech Stinger.
1/4 Mile: E.T. 13.3 Mph 104
So I added the following:
Borla Exhaust
ASP UD Pulley
Futral F4 Cam
I still had the Z06 box and stock exhaust manifolds and cats
1/4 Mile: 12.8 E.T. MPH 112
This was on the same track 2 months apart but it was much hotter the second time.
I have since added the Halltech Stinger.
Melting Slicks
Joined: Aug 1999
Posts: 3,452
Likes: 3
From: Spring, TX
Re: Comp cam or Thunder racing (gonbad)
I can get that time down even further with some practice. It has been too hot here in Texas lately. I have seen C5's with my MPH running low 12's. This car is a completely different car now with the cam. I am glad too because it was some serious work installing it. Not a job I want to repeat anytime soon.
Thread Starter
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
Re: Comp cam or Thunder racing (gonbad)
The +4 degrees of advance will make the idle a little choppy it will have a definite lope.
I thought the advance would have the opposite effect; smooth the idle and help low end torque. Would it be of any benifit to INSTALL it a couple of degrees retarded?93POLO
What is cam motion lobes???
