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LS2, Comp Cam 146-458-11.... 64 Nova AutoX question
This cam comes with an engine deal I am buying. Any thoughts on using it for the 64 Nova AutoX project below? Thanks in advance!!!!
Intake Duration at 050 inch Lift: 227 Exhaust Duration at 050 inch Lift: 243 Duration at 050 inch Lift: 227 int./243 exh. Advertised Intake Duration: 277 Advertised Exhaust Duration: 293 Advertised Duration: 277 int./293 exh. Intake Valve Lift with Factory Rocker Arm Ratio: 0.614 in. Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.624 in. Valve Lift with Factory Rocker Arm Ratio: 0.614 int./0.624 exh. Lobe Separation (degrees): 113
Engine details.
LS2 6.0 stock bore and stroke, flat top piston 11-1 CR
799 stock rebuilt heads PAC springs
LS6 intake
92mm TB
1-7/8 LT's with 3" full exh
Holley Terminator
Going in a 3k pound 64 Nova Pro Touring / AutoX car.
Manual brakes
Plan to add A/C
T56 GTO 6 speed
Moser 9" 3.55 gear
26" tall tire
Love the car! Cam is not horrible, but if I were doing that combo, as is, I would do a 224/224 or 228/228 110-112lsa with a modern lobe that has some lift. Straight pattern cams w/ some overlap work well in on/off throttle transitions because they make instant direct torque, usually. It would have to be a custom grind, though. Most of the straight pattern cams have same ancient lobes from 20 years ago. Maybe Lunati might have something.
Honestly if it was me I’d contact Cam Motion and have them spec out a custom cam after giving them every detail of your combo and exactly what you’re looking for as far as drivability and power. Most of these off the shelf cams are on older dated lobes and most companies aren’t updating them. Also, id really recommend spending the money on some Johnson 2110R lifters especially if you’re gonna have it on the track and beat on it. You’ll hear alot of people say just go with Ls7 lifters which is bad advice and has cost plenty of people on these forums a motor or two. Also if you’re gonna run some R compounds you need to look into a dry sump setup because even with the improved racing trap door mod or an extra qt of oil you will likely have oil starvation issues around long turns. Beautiful build, ive wanted a Nova for a long time especially the 66-67 body. Good luck!
Love the car! Cam is not horrible, but if I were doing that combo, as is, I would do a 224/224 or 228/228 110-112lsa with a modern lobe that has some lift. Straight pattern cams w/ some overlap work well in on/off throttle transitions because they make instant direct torque, usually. It would have to be a custom grind, though. Most of the straight pattern cams have same ancient lobes from 20 years ago. Maybe Lunati might have something.
Proven Ls2 Cam; Wouldn't go bigger due to Ls6 Intake and 3.55 Gears. Good Luck with Sweet Nova Project 😎.
Originally Posted by Ls1Rx-7
Honestly if it was me I’d contact Cam Motion and have them spec out a custom cam after giving them every detail of your combo and exactly what you’re looking for as far as drivability and power. Most of these off the shelf cams are on older dated lobes and most companies aren’t updating them. Also, id really recommend spending the money on some Johnson 2110R lifters especially if you’re gonna have it on the track and beat on it. You’ll hear alot of people say just go with Ls7 lifters which is bad advice and has cost plenty of people on these forums a motor or two. Also if you’re gonna run some R compounds you need to look into a dry sump setup because even with the improved racing trap door mod or an extra qt of oil you will likely have oil starvation issues around long turns. Beautiful build, ive wanted a Nova for a long time especially the 66-67 body. Good luck!
Thanks for the input and advice. I probably should have mentioned a couple things. 1. This car also pulls alot of street duty so its not just a track car, it will eventually have AC and will be driven hard on the street. 2. Its a limited budget project. I am trying to spend my money wisely. I probably should have asked more directly about the Comp cam that comes with the engine and what characteristics it would have for my combo. Lastly I am not a cam guru. Thanks again!!
When my Formula was N/A, I had a Street Sweeper cam and I loved it. Absolutely recommend a cam with more overlap. The midrange torque improvement over my previous cam was significant. I still have the cam, and I'll sell it cheaply if it's not damaged ( my LS1 threw a rod years ago, have yet to tear it out of the car. ) This cam had great street manners, my engine was an SBE LS1 with ported 241 heads and a FAST intake. Never dynoed it, but it ran 12.11@119.7 in the 1/4.
Love the car! Cam is not horrible, but if I were doing that combo, as is, I would do a 224/224 or 228/228 110-112lsa with a modern lobe that has some lift. Straight pattern cams w/ some overlap work well in on/off throttle transitions because they make instant direct torque, usually. It would have to be a custom grind, though. Most of the straight pattern cams have same ancient lobes from 20 years ago. Maybe Lunati might have something.
Yes. OPs cam will work, but it has a huge split, more like an LS7 cam/rec port split, than an LS2 grind......
Honestly if it was me I’d contact Cam Motion and have them spec out a custom cam after giving them every detail of your combo and exactly what you’re looking for as far as drivability and power. Most of these off the shelf cams are on older dated lobes and most companies aren’t updating them. Also, id really recommend spending the money on some Johnson 2110R lifters especially if you’re gonna have it on the track and beat on it. You’ll hear alot of people say just go with Ls7 lifters which is bad advice and has cost plenty of people on these forums a motor or two. Also if you’re gonna run some R compounds you need to look into a dry sump setup because even with the improved racing trap door mod or an extra qt of oil you will likely have oil starvation issues around long turns. Beautiful build, ive wanted a Nova for a long time especially the 66-67 body. Good luck!
LS7 lifters are kind of a crap shoot with bigger lift and stiff springs. I will say Ive had the LS7 lifters in for 43,000 miles, with 160lbs seat, 425lbs open dual springs, and theyve been great. Except 1 lifter seems to bleed down on the 1st start of the day. After about 2 minutes of running, it pumps up and all is fine. I've probably been lucky....So far!!!
Yes. OPs cam will work, but it has a huge split, more like an LS7 cam/rec port split, than an LS2 grind......
I agree. The 227 on the intake side is just fine. I'd shorten the exhaust side up to 232 to 234 and get Cam Motion to grind it. You'd lose Hp on the top end but probably have more below that. That cam in post one reeks of Comp's LSL lobes. Not hugely aggressive, but not near as smooth as Cam Motion's lobes. Those LSL lobes have been around 15 years or so. As mentioned earlier, better ones available now.
Yes, 227/232, or similar. As for cam design, I'm not a cam grinder, but have some experience with selecting different vendors. The majority of knowledgeable people I've spoken to about cams mostly recommended Cammotion lobes over Comp. Why? I don't know. But that list of guys included TSP, Allan Futral, Kurt Urban, etc. My feeling is they can't all be wrong......
01-28-2023, 11:11 PM
LS2, Comp Cam 146-458-11.... 64 Nova AutoX question 
