Reverse split cam education
Thread Starter
Drifting
Joined: Aug 2002
Posts: 1,317
Likes: 0
From: Lancaster CA
Reverse split cam education
I was reading the following thread and wondered what the heck this is http://forums.corvetteforum.com/zerothread?id=473018
Can someone tell me what a reverse split cam is, how it differes from a normal cam and/or what advantages it offers.
Thanks,
:cheers:
Can someone tell me what a reverse split cam is, how it differes from a normal cam and/or what advantages it offers.
Thanks,
:cheers:
Safety Car
Joined: Mar 2002
Posts: 4,928
Likes: 1
Cruise-In V Veteran
St. Jude Donor '09
Re: Reverse split cam education (scool93535)
Split refers to cam duration.Reverse split intake duration exceeds exhaust duration- 224/220. Normal split the exhaust exceeds the intake 239/251. Hope this helps. Maybe someone with greater knowledge can add to this. :cool: :cheers: :steering: :steering:
[Modified by binksZ06, 9:16 PM 1/16/2003]
[Modified by binksZ06, 9:16 PM 1/16/2003]
Safety Car
Joined: Nov 1999
Posts: 3,891
Likes: 2
From: Houston, TX
Re: Reverse split cam education (binksZ06)
Split refers to cam duration.Normal split intake duration exceeds exhaust duration- 224/220. Reverse split the exhaust exceeds the intake 239/251. Hope this helps. Maybe someone with greater knowledge can add to this. :cool: :cheers: :steering: :steering:
224/220, 224/224, 220/224 respectively.
Good Luck,
Team Owner
Joined: Oct 1999
Posts: 31,976
Likes: 487
From: Guinness Its whats for B'fast JAWGA
CI 3-4-5-9 Veteran
Re: Reverse split cam education (binksZ06)
A traditional split will have exhaust duration to compensate for restricted exhaust, nitrous, or forced induction. The reverse split is fairly new and compensated for restricted intakes such as the LS1.
http://www.thunderracing.com/index.c...ategoryid=1113 gives specs on the cams mentioned. The 230/224 or 227/224 are reverse splits, and the 22/227 is a standard split. Read the intended uses of the cam desgn as well. Reverse splits have been yielding a good mid range power band. Durations are given intake duration/exhaust duration.
[Modified by 93Polo, 2:31 PM 1/16/2003]
http://www.thunderracing.com/index.c...ategoryid=1113 gives specs on the cams mentioned. The 230/224 or 227/224 are reverse splits, and the 22/227 is a standard split. Read the intended uses of the cam desgn as well. Reverse splits have been yielding a good mid range power band. Durations are given intake duration/exhaust duration.
[Modified by 93Polo, 2:31 PM 1/16/2003]
Melting Slicks
Joined: May 2000
Posts: 2,161
Likes: 17
Re: Reverse split cam education (binksZ06)
Split refers to cam duration.Normal split intake duration exceeds exhaust duration- 224/220. Reverse split the exhaust exceeds the intake 239/251. Hope this helps. Maybe someone with greater knowledge can add to this. :cool: :cheers: :steering: :steering:
Normal split: Intake duration < Exhaust duration, ex: 220/224 or 218/222
Reverse split: Exhaust duration > Intake Duration, ex: 227/224, 230/227
Reverse split cams are the newest technology; they give more upper rpm hp and tq whiile keeping the great low end hp and tq of a smaller cam......
Safety Car
Joined: Nov 1999
Posts: 3,891
Likes: 2
From: Houston, TX
Re: Reverse split cam education (OliverM5)
Reverse splits are not really the new technology, but there just are not many applications where the exhaust port and setup are so efficient that a reverse split would be a good idea. The old style small block chevy heads have a HORRIBLE exhaust port design and therefore need a lot of extra help to expell the gasses. An 18* race head has a much better design and will go with closer to a single pattern camshaft but all out racing can use the exhaust...
The LS1 has a very efficient design of the exhaust port and combustion chamber and is very well suited to street guys using a reverse split camshaft, making the cars better daily drivers as well as building great power.
In the end, you really need to match your camshaft around your heads, compression, exhaust, and intended use for the car. It all comes into play.
Look for posts next week. Maybe I will try and get a video of the car so you can see how it sounds and behaves also. :yesnod:
The LS1 has a very efficient design of the exhaust port and combustion chamber and is very well suited to street guys using a reverse split camshaft, making the cars better daily drivers as well as building great power.
In the end, you really need to match your camshaft around your heads, compression, exhaust, and intended use for the car. It all comes into play.
Look for posts next week. Maybe I will try and get a video of the car so you can see how it sounds and behaves also. :yesnod:
Drifting
Joined: Jun 2001
Posts: 1,934
Likes: 5
From: Mount Vernon Arkansas
St. Jude Donor '12-'13
Re: Reverse split cam education (Chris@SpeedDemon)
"The LS1 has a very efficient design of the exhaust port and combustion chamber and is very well suited to street guys using a reverse split camshaft, making the cars better daily drivers as well as building great power."
Does this apply to LS6 heads as well? How well will LS6 heads perform with a reverse split?
[Modified by 1SGRET, 6:36 PM 1/16/2003]
Does this apply to LS6 heads as well? How well will LS6 heads perform with a reverse split?
[Modified by 1SGRET, 6:36 PM 1/16/2003]
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Safety Car
Joined: Nov 1999
Posts: 3,891
Likes: 2
From: Houston, TX
Re: Reverse split cam education (1SGRET)
"The LS1 has a very efficient design of the exhaust port and combustion chamber and is very well suited to street guys using a reverse split camshaft, making the cars better daily drivers as well as building great power."
Does this apply to LS6 heads as well? How well will LS6 heads perform with a reverse split?
[Modified by 1SGRET, 6:36 PM 1/16/2003]
Does this apply to LS6 heads as well? How well will LS6 heads perform with a reverse split?
[Modified by 1SGRET, 6:36 PM 1/16/2003]
Let me know if anyone is interested....
Thread Starter
Drifting
Joined: Aug 2002
Posts: 1,317
Likes: 0
From: Lancaster CA
Re: Reverse split cam education (Chris@SpeedDemon)
"The LS1 has a very efficient design of the exhaust port and combustion chamber and is very well suited to street guys using a reverse split camshaft, making the cars better daily drivers as well as building great power."
Does this apply to LS6 heads as well? How well will LS6 heads perform with a reverse split?
[Modified by 1SGRET, 6:36 PM 1/16/2003]
The LS6 head is actually EXTREMELY well suited for a reverse split camshaft with stock heads. We can work on a package deal of cam, springs and pushrods if everyone is interested? Price would be $679.95 to $689.95 depending on whether it was a custom cam or a Comp Cams shelf grind...
Let me know if anyone is interested....
Does this apply to LS6 heads as well? How well will LS6 heads perform with a reverse split?
[Modified by 1SGRET, 6:36 PM 1/16/2003]
The LS6 head is actually EXTREMELY well suited for a reverse split camshaft with stock heads. We can work on a package deal of cam, springs and pushrods if everyone is interested? Price would be $679.95 to $689.95 depending on whether it was a custom cam or a Comp Cams shelf grind...
Let me know if anyone is interested....
My needs are - I'm a weekend drag racer. Daily driver. I want to keep the stock LS1 heads but, I understand the need to replace rods, springs and, retainers with an after market cam. I would like a noticable lope at idle. I would like more power across the band. What should I expect, 25 - 50 hp? I'd prefer to not have to have it tuned but, that's not a show stopper. I expect to be adding headers w/ hi-flow cats and, LS6 manifold some day. For now stock LS1 headers and manifold.
:cheers:
Melting Slicks
Joined: Feb 2001
Posts: 3,360
Likes: 1
From: DFW TX
Senior Member
Cruise-In III Veteran
Cruise-In IV Veteran
Re: Reverse split cam education (scool93535)
Our G5X-2 cam has a normal split and out dyno's the reverse split cams: 463.9RWHP / 422.6RWTQ LS6 Heads/LS6 Intake/No cats
We have a few C5's coming through the pipeline so we will post more dyno's with different exhaust/cat options.
Give us a call if you're interested.
LG Motorsports
972-272-7753
"Where Money Buys Speed"
[Modified by Godspeed, 7:15 PM 1/20/2003]
We have a few C5's coming through the pipeline so we will post more dyno's with different exhaust/cat options.
Give us a call if you're interested.
LG Motorsports
972-272-7753
"Where Money Buys Speed"
[Modified by Godspeed, 7:15 PM 1/20/2003]
