Another Cam Question
Thread Starter
Disabled by request 8 JUN 2025
Joined: May 2019
Posts: 329
Likes: 94
From: St. Augustine, FL
Another Cam Question
I'm planning down the road of building up a 350 sitting in the corner of my garage. The build would include .030 over flat top pistons, 64cc cast iron heads, 2 1/2 inch rams horn exhaust manifolds, stock aluminum vette intake with Q-jet carb. My question is: Is there a cam with a little lope (L-82 ??) that will work with 2.87 gears and a stock TH350 converter? The car is used mainly for cruise-ins and every day street/highway driving.
Is my vette stock?? HAHA
Joined: Oct 2015
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From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
are you looking for a flat tappet cam or a roller cam. I had good luck with comp cams flat tappet High energy cams with an Edelbrock RPM, quadrajet 750, 10.5 to compression with dome pistons and Hekimian Aluminum racing 64 cc heads . I dont know what compression youre running but thses both worked for me. If your compression is lower the 675 cam may work for you
https://www.summitracing.com/parts/cca-cl12-677-4
This one still had enough vacuum to operate all the vacuum stuff and it sounded really good. IF you throw on headers it will really come awake. I had this on with 2.5 inch rams horns and 2.5 inch sweet thunder 69 style side pipes and ran 13.5 in the quarter with 3.70 gears and a M20 trans
If your running 2 inch to the rear I also used this one which isnt as wild
https://www.summitracing.com/parts/cca-cl12-675-4
both of these are more performance oriented and worked well with my setup. If you want a big lope, old school sound then the Comp Cams ***** Thumpers are probably more what you want. I havent used those but someone else can chime in on those
https://www.summitracing.com/parts/cca-cl12-677-4
This one still had enough vacuum to operate all the vacuum stuff and it sounded really good. IF you throw on headers it will really come awake. I had this on with 2.5 inch rams horns and 2.5 inch sweet thunder 69 style side pipes and ran 13.5 in the quarter with 3.70 gears and a M20 trans
If your running 2 inch to the rear I also used this one which isnt as wild
https://www.summitracing.com/parts/cca-cl12-675-4
both of these are more performance oriented and worked well with my setup. If you want a big lope, old school sound then the Comp Cams ***** Thumpers are probably more what you want. I havent used those but someone else can chime in on those
Drifting
Joined: Mar 2006
Posts: 1,263
Likes: 188
From: Wabasha Mn
I'm planning down the road of building up a 350 sitting in the corner of my garage. The build would include .030 over flat top pistons, 64cc cast iron heads, 2 1/2 inch rams horn exhaust manifolds, stock aluminum vette intake with Q-jet carb. My question is: Is there a cam with a little lope (L-82 ??) that will work with 2.87 gears and a stock TH350 converter? The car is used mainly for cruise-ins and every day street/highway driving.
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
I'm planning down the road of building up a 350 sitting in the corner of my garage. The build would include .030 over flat top pistons, 64cc cast iron heads, 2 1/2 inch rams horn exhaust manifolds, stock aluminum vette intake with Q-jet carb. My question is: Is there a cam with a little lope (L-82 ??) that will work with 2.87 gears and a stock TH350 converter? The car is used mainly for cruise-ins and every day street/highway driving.
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
Comp 268H......perfect for that. I also urge you to go to a 2101 Performer and long tube headers......both will help torque down low and help pull that gear.
If you are not into Comp, find the L-82 cam in a retro grind.....most of the cam manufactures have them.
At this level......a custom cam is completely unnecessary. A roller is nice but would require a LOT of machine work to work with your stock heads. If you have the budget, a nice set of heads will also boost low RPM torque production.
Jebby
If you are not into Comp, find the L-82 cam in a retro grind.....most of the cam manufactures have them.
At this level......a custom cam is completely unnecessary. A roller is nice but would require a LOT of machine work to work with your stock heads. If you have the budget, a nice set of heads will also boost low RPM torque production.
Jebby
Le Mans Master
Joined: Mar 2004
Posts: 7,493
Likes: 1,502
From: Little Rock AR
I do like the 268H for stock type smog engines but I worry about the static compression ratio here (maybe ~10.4) being too much for that cam. Certainly the 2.87 rear gear will not help either. 40 years ago I had a 327 with the 350HP cam and a 2.73 rear gear and it was a clutch eater. Changed the gear and it was fun.
Cam swap only - Keep the quench tight at .040" and use the 350/350 (L-82) cam. If you do that, the car will run well on pump gas. You will not get much of a lope unfortunately.
Swap out the rear gears and/or get a mild converter then you can step up the cam for more power/lope (a more fun car to drive).
Cam swap only - Keep the quench tight at .040" and use the 350/350 (L-82) cam. If you do that, the car will run well on pump gas. You will not get much of a lope unfortunately.
Swap out the rear gears and/or get a mild converter then you can step up the cam for more power/lope (a more fun car to drive).
Team Owner
Joined: Oct 2004
Posts: 81,241
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From: altered state
St. Jude Donor '05
Old line of cams but they sure run good.
Last edited by cv67; Jul 1, 2020 at 10:38 AM.
Drifting
Joined: Mar 2006
Posts: 1,263
Likes: 188
From: Wabasha Mn
No it is the old 270 HL grind. There is also the 264 Mega cam with 214 214 .450 lift 108 lsa. Almost the same as the 270 HL . I ran the 264 Mega cam in my 76 L82 and it had much better low and mid range than the L82 cam. 256 cam is a good cam but in his combo would be too mild for his engine in my opinion.
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Drifting
Joined: Jun 2015
Posts: 1,345
Likes: 753
From: Doctors Inlet Florida
Just call your favorite cam company and see what they recommend. I had a cam picked out that I thought was perfect, called Comp cams and they recommended the next size higher. I'm glad I listened.