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cam selection bbc 427

 
als427chevy
I love my Chevy Chevette!
Posts: 10
Joined: 06/13
Posted: 11/24/13 12:52 PM

Hi,

Looking for advice on a camshaft for my 73 camaro.
Have a big chevy 427.
10.1 comp ratio.
4 speed manual m21
rear axle 3.10
28" tyres.
closed chamber iron heads , mild polish deep pocket port.

750 holley vac 2nds
Hedders
low rise dual plane intake manifold ( nothing else clears 2nd gen camaro hood).
Dont think Id push a big block over 6000rpm...?

Was debating between the lunati 262/268 and 268/278.

specs:

262:

Hydraulic flat tappet
Basic Operating RPM Range:1,400-5,800
Duration at 050 inch Lift:219 int./227 exh.
Advertised Duration:262 int./268 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:0.530 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:0.542 in.
Valve Lift with Factory Rocker Arm Ratio:0.530 int./0.542 exh.
Lobe Separation (degrees):112/108

268:


Basic Operating RPM Range:1,800-6,200
Duration at 050 inch Lift:227 int./233 exh.
Advertised Intake Duration:268
Advertised Exhaust Duration:276
Advertised Duration:268 int./276 exh.
Valve Lift with Factory Rocker Arm Ratio:0.542 int./0.554 exh.
Lobe Separation (degrees):110

I drive around town at a low rumble and like to floor it once in a while so am looking for very quick acceleration rather than top speed.

Also prefer / smoother moderate idle ( not interested in choosing a cam designed to just sound lopey - just want performance across the rpm range) and reasonable vacuum for power brakes.

Any thoughts

thanks  

Post Reply
68scott385
I have an SS396 tatoo
Posts: 325
Joined: 07/09
Posted: 11/25/13 12:01 AM

From your description of the way you plan to use / drive the car, go with the 262 cam, IMO.  
68scott385 68scott385 68scott385

Post Reply
dond1965
V-6 Camaros rule!
Posts: 33
Joined: 12/13
Posted: 12/12/13 10:19 PM

with those rear tires and that rear gear set you need low end torque, and as the man said the 262 unit IS the right choice!  

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