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Old 09-03-2010, 08:57 PM
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What's the hottest cam...

You can use on a SBC 350 with three deuces. Yeah I know a single four barrel is better for performance but I want to run three deuces. Car is a 65 Corvette with a 69 350, 11:1 comp, 186 heads 2.02/1.6, Hooker sidepipes, Richmond non-od 5sp with 3.08 rear, Edelbrock 3X2 intake with small base Roch carbs, progressive linkage.

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Tom

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Old 09-03-2010, 09:03 PM
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I don;t know about the largest cam but if you want a cam that will not cause you to have to do a lot of recalibrating the carbs, pick a cam with moderate duration and a wide LSA. 112 or wider.

The wilder the cam, the more likely you will ahve to dig into the carbs for correct for a different idle manifold vacuum and metering signal.
( power step springs, idle feed restrictions, idle air bleeds etc.)

A summit number 1103 or similar will run without special carb tuning issues.

214-224-.442-.465-112LSA. 11:1 is a lot for pump gas.
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Old 09-03-2010, 09:10 PM
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Thanks.
The engine is basically an L46 and seem to be ok on high test. I think the stock cam is 224, 112 LSA .450/.460. Sounds like that would work well. I was hoping to get a little more grunt but maybe that's not reasonable with 3X2.
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Old 09-03-2010, 09:19 PM
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I don't think I've ever seen a Chevy motor measure out to the advertised static compression ratio. They're always less, so more cam might just get real mushy on the bottom.
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Old 09-03-2010, 10:32 PM
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The factory L46cam has a relatively late intake closing point explaining the tolerant nature for 11:1 on pump gas.

its 222@.050 114LSA goes in 1deg retated from straight up 115-113 centers.
if you want more top endpower /more rpm try Lunati cam #401A3LUN
street friendly high perf mechanical cam.
272-282 238-248 .485 .503 112 lsa
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Old 09-04-2010, 11:40 AM
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Quote:
Originally Posted by F-BIRD'88
The factory L46cam has a relatively late intake closing point explaining the tolerant nature for 11:1 on pump gas.

its 222@.050 114LSA goes in 1deg retated from straight up 115-113 centers.
if you want more top endpower /more rpm try Lunati cam #401A3LUN
street friendly high perf mechanical cam.
272-282 238-248 .485 .503 112 lsa
This is solid lifter? Any recommendation on a hyd? Will it run on pump gas?
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Old 09-04-2010, 05:54 PM
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Quote:
Originally Posted by Sky65
This is solid lifter? Any recommendation on a hyd? Will it run on pump gas?
Thanks
if you are ok now it will be ok also. A true 11:1 is a bit high for pump gas.
You actual measured may be less. You also have the option of lowering the cr a bit if you are too close to the edge.
Are you able to run full spark advance @WOT 34-36deg? Or are you dialing back the advance to keep it from pinging under throttle.?

Yes this is a street friendly solid lifter cam. These cams are not hard to live with
and outperform hyd cams. All the old high perf vettes came with factory solid lifter cams. This cam is a lot like the 70 71 350/370hp LT1 cam and like the BBC 454-450hp LS-6 cam. it will run very sweet on the street with improved power and rpm range over what you have now. It is not a race cam. it is designed for and intended for reliable street high perf duty.
Once a year valve lash adjustment.
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Old 09-04-2010, 07:17 PM
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Quote:
Originally Posted by F-BIRD'88
if you are ok now it will be ok also. A true 11:1 is a bit high for pump gas.
You actual measured may be less. You also have the option of lowering the cr a bit if you are too close to the edge.
Are you able to run full spark advance @WOT 34-36deg? Or are you dialing back the advance to keep it from pinging under throttle.?

Yes this is a street friendly solid lifter cam. These cams are not hard to live with
and outperform hyd cams. All the old high perf vettes came with factory solid lifter cams. This cam is a lot like the 70 71 350/370hp LT1 cam and like the BBC 454-450hp LS-6 cam. it will run very sweet on the street with improved power and rpm range over what you have now. It is not a race cam. it is designed for and intended for reliable street high perf duty.
Once a year valve lash adjustment.
I'm running 36* total, with vac adv disconneted, all in at about 2800 rpm. I do have side pipes so the car is a bit loud but I don't hear any pinging. I pulled the pan when I got the car and it has forged pistons and crank and the crank was ballanced.
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