[Bangkok Dean]

I am looking to change out my mild Edelbrock Performer hydraulic cam.
I want a little more power and a lumpy idle with out loosing vacuum.
I have the Edelbrock Performer RPM heads and intake with a little over 9 to 1 compression. I am looking at the Edelbrock 5002 that should work ok with my heads and still use hydraulic lifters.

Is there a better cam available?

 

[MYBAD79]

You're saying "mild" so I assume you have the Performer cam and not the Performer RPM cam.

Summit 1103 would be a nice upgrade and still be driveable with good low end power and vacuum. You'll need 1.6 ratio rocker arms, the lift is a little low with stock rocker arms.

Brand: Summit
Product Line: Summit Camshafts
Part Type: Camshafts
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 2,000-4,500
Intake Duration at 050 inch Lift: 214
Exhaust Duration at 050 inch Lift: 224
Duration at 050 inch Lift: 214 int./224 exh.
Advertised Intake Duration: 272
Advertised Exhaust Duration: 282
Advertised Duration: 272 int./282 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.442 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.465 in.
Valve Lift with Factory Rocker Arm Ratio: 0.442 int./0.465 exh. lift
Lobe Separation (degrees): 112
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
Computer Controlled Compatible: No
Quantity: Sold individually.

 

[Bangkok Dean]

You're saying "mild" so I assume you have the Performer cam and not the Performer RPM cam.

Summit 1103 would be a nice upgrade and still be drivable with good low end power and vacuum. You'll need 1.6 ratio rocker arms, the lift is a little low with stock rocker arms.

Brand: Summit
Product Line: Summit Camshafts
Part Type: Camshafts
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 2,000-4,500
Intake Duration at 050 inch Lift: 214
Exhaust Duration at 050 inch Lift: 224
Duration at 050 inch Lift: 214 int./224 exh.
Advertised Intake Duration: 272
Advertised Exhaust Duration: 282
Advertised Duration: 272 int./282 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.442 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.465 in.
Valve Lift with Factory Rocker Arm Ratio: 0.442 int./0.465 exh. lift
Lobe Separation (degrees): 112
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
Computer Controlled Compatible: No
Quantity: Sold individually.

I did type the RPM sorry.
This is the specs on the cam I am looking at. I think it will preform and give a lumpy idle?:cheers:
Brand: Edelbrock
Product Line: Edelbrock Torker-Plus Cam and Lifter Kits
Part Type: Camshaft and Lifter Kits
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 1,500-6,500
Intake Duration at 050 inch Lift: 232
Exhaust Duration at 050 inch Lift: 234
Duration at 050 inch Lift: 232 int./234 exh.
Advertised Intake Duration: 292
Advertised Exhaust Duration: 300
Advertised Duration: 292 int./300 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.488 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.488 in.
Valve Lift with Factory Rocker Arm Ratio: 0.488 int./0.488 exh. lift
Lobe Separation (degrees): 108

 

[MYBAD79]

Hey Dean,

well... most questions have been answered .... just keep in mind that it's easy to 'overcam' an engine, the higher the duration and the better the idle sounds the worse the low end power and the vacuum gets.
A cam with Intake 212-218 and exhaust 222-230 duration range with a 110 or 112 degrees LS is about as much as you want for a mild 350ci SB.
Anything with more duration or 108 degrees LS will compromise low end power and vacuum.....

The Performer cam is actually more like a truck cam (for towing applications)... I had the same cam in my 350, it was not too bad... lots of power from idle to 4000rpm.... nothing above 4000.... but almost like a Diesel it would go from 700rpm...... :smack

 

[Bangkok Dean]

Hey Dean,

well... most questions have been answered .... just keep in mind that it's easy to 'overcam' an engine, the higher the duration and the better the idle sounds the worse the low end power and the vacuum gets.
A cam with Intake 212-218 and exhaust 222-230 duration range with a 110 or 112 degrees LS is about as much as you want for a mild 350ci SB.
Anything with more duration or 108 degrees LS will compromise low end power and vacuum.....

The Performer cam is actually more like a truck cam (for towing applications)... I had the same cam in my 350, it was not too bad... lots of power from idle to 4000rpm.... nothing above 4000.... but almost like a Diesel it would go from 700rpm...... :smack

Thanks for taking the time to assist. Your info is well received.
Cheers
Dean

 

[Fred Mann]

I did type the RPM sorry.
This is the specs on the cam I am looking at. I think it will preform and give a lumpy idle?:cheers:
Brand: Edelbrock
Product Line: Edelbrock Torker-Plus Cam and Lifter Kits
Part Type: Camshaft and Lifter Kits
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 1,500-6,500
Intake Duration at 050 inch Lift: 232
Exhaust Duration at 050 inch Lift: 234
Duration at 050 inch Lift: 232 int./234 exh.
Advertised Intake Duration: 292
Advertised Exhaust Duration: 300
Advertised Duration: 292 int./300 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.488 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.488 in.
Valve Lift with Factory Rocker Arm Ratio: 0.488 int./0.488 exh. lift
Lobe Separation (degrees): 108

Does Edelbrock give a compression ratio range for the cam you're interested in? 9:1 seems a little low for the duration you're talking about with aluminum heads. You'll need some gears with that cam I would think.

Big blocks are more tolerant of a bigger cam than small blocks. You can see the cam specs for my car below (230/238/110). Click on "My Videos" under my avatar and view the video "14 Degrees". The idle you'll have will be worse than my bomb.