Cam motion "track weapon"
Safety Car
Joined: Jan 2012
Posts: 3,956
Likes: 520
From: Da U.P.
I have come across this video, thank you. I think this cam's specs are interesting to me in that the intake and exhaust duration difference is the same as the stock cam which was 196/208 if I remember. I may be the minority here, but just found that to be interesting. I'm sure there is plenty of reasoning and math behind that. Which I appreciate when trying to make my car go faster!
Melting Slicks
Joined: Dec 2004
Posts: 2,847
Likes: 1,144
From: Sleepy Hollow- NJ
I have also heard great things about LRB. I'll look into getting my heads worked from there. I'm sure we probably have crossed paths with the same people. Small town life. I have been to the Blue Arrow. But for a wedding. Don is a cool guy. I've been meaning to go to cruise nights or the corvette shows there, but sometimes life gets busy. I appreciate the info thank you. Whenever I get around to doing this I'll revive it and post how it went.
If Lou is backed up or you want two local to NJ options you can also call Julio at Cartek in Garwood about the head porting. Cartek is just 1.5 hours from you (four miles from where I live now). Cartek has put out great ported 241s over the years. So weigh both options/costs. Both great guys, Lou and Julio. Plus Julio can do your dyno tune for you.
Good luck!
Le Mans Master
Joined: Feb 2021
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From: Florida
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Thread Starter
Instructor
Joined: Sep 2018
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From: US
After reaching out to 3 different vendors looking for cylinder heads I wound up purchasing ported 243s from Phil at Advanced Induction. He is also going to order the cam so he can measure and QC them. Spoke with the tuner afterwards. He's confident that with the ported heads we can achieve what we're looking for. There's endless literature out there about cam specs and heads, but from what I have gathered, when doing the top end, starting with quality heads is a must. There's some as cast heads that flow great etc, but I didn't feel comfortable enough to use them. Phil's solid reputation is what sold me.
Le Mans Master
Joined: Feb 2021
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From: Florida
2025 Corvette of the Year Finalist - Unmodified
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After reaching out to 3 different vendors looking for cylinder heads I wound up purchasing ported 243s from Phil at Advanced Induction. He is also going to order the cam so he can measure and QC them. Spoke with the tuner afterwards. He's confident that with the ported heads we can achieve what we're looking for. There's endless literature out there about cam specs and heads, but from what I have gathered, when doing the top end, starting with quality heads is a must. There's some as cast heads that flow great etc, but I didn't feel comfortable enough to use them. Phil's solid reputation is what sold me.
All about cubic dollars 👍
Main thing is the heads are matched with the cam. Sounds like you have a pro in your corner. Good move.
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Thread Starter
Instructor
Joined: Sep 2018
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From: US
Le Mans Master
Joined: Feb 2021
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From: Florida
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Race Director
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Studs are nice, but they're probably better suited for FI or Nitrous. But they cant hurt any build. Either ARP studs or ARP bolts are far superior (and more economical in the long run) to the factory bolts.....
Team Owner
Joined: Oct 1999
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From: Guinness Its whats for B'fast JAWGA
CI 3-4-5-9 Veteran
You can still pull the heads off the car. You may have to unthread studs on the driver side to pull the head.
Le Mans Master
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From: Florida
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The GMs are a whole lot cheaper…. Have your guy CC the heads, each of them, before you have any milling done. Not uncommon for them to be different from the factory, which can be corrected. For example, one of my heads was 1/2 a CC bigger, so that could be corrected in the milling process.
Last edited by vette4fl; Nov 21, 2023 at 11:57 PM.
Team Owner
Joined: Oct 1999
Posts: 31,976
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From: Guinness Its whats for B'fast JAWGA
CI 3-4-5-9 Veteran
I'd stick with GM, quench can get better with the thinner gasket but make sure the deck on the block is very clean or you may have a leak.
A friend just bought carbide gasket scrapers which worked very well
A friend just bought carbide gasket scrapers which worked very well
Thread Starter
Instructor
Joined: Sep 2018
Posts: 119
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From: US
I know this has all been asked and answered many times but I appreciate it. What do most people get hung up on when doing H/C swaps? Aligning the balancer? Not tourqeing stuff down properly? Not measuring pushrod length???
Pro
Joined: Aug 2010
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From: Montgomery Texas
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The LS1 and LS6 exhaust ports only flow roughly between 75-80% of the intake ports (even on CNC ported heads). Therefore, the exhaust port flow benefits from a cam lobe that offers a wee bit more duration. Some strategies also offer differing lift, combined with different duration in order to address the flow discrepancy between the intake and exhaust ports.
