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Old 08-09-2012, 01:51 PM
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More lift. Why?? Bad idea??

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  #32 (permalink)  
Old 08-09-2012, 02:03 PM
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buy a bigger cam?
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Old 08-09-2012, 03:52 PM
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Correct me if I'm wrong but if I buy a bigger cam that means more duration. I'm only 10.3:1. The XE274 is 236 @ .5. Which is right about where I want to be for my compression ratio isnt it??. By going to a 1.6 rockere you get a little more lift at the sane duration.
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Old 08-09-2012, 04:03 PM
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first,changing rockers will change the lift and also it will change the duration slightly. How are you choosing your cam? what are the flow numbers for your cylinder heads?What rpm range are you thinking?
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Old 08-09-2012, 07:16 PM
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This is the cam comp recomended COMP Cams: Xtreme Energy™, XR274R <BR> Great for Power Touring, Very Reliable Power, Rough Idle

These are the flow numbers for the heads out of the box but Im going to port them (after reading vizards book and researching the heck out of it) Edelbrock.com - Cylinder Heads - Chevy - Small Block - E-Street

As far as RPM range I dont plan spinnig it over 6000-6500
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Old 08-09-2012, 07:45 PM
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Quote:
Originally Posted by vinniekq2 View Post
first,changing rockers will change the lift and also it will change the duration slightly. How are you choosing your cam? what are the flow numbers for your cylinder heads?What rpm range are you thinking?
That duration is about right. Rocker ratio doesn't affect duration. It does increase lift.
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Old 08-09-2012, 08:29 PM
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Cam Selection

You said this is a street car so I agree with you. Go with the XR274R solid roller. If you want to go up a step you could go with the XR280R. It requires 10.1 compression, 3000 torque converter, and 3.90 gears. Check out these kits. COMP Cams: Magnum, 280AR: Cam & Kit and this : COMP Cams: Xtreme Energy™, XR274R: Cam & Kit. One more thing, when selecting a camshaft you can go up or down a 1/2 point on compression ratio without causing any problems.
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Old 08-09-2012, 09:08 PM
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F Bird can you please define a poser camlol.
What can would you recomend??
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