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Topic Review (Newest First)
08-09-2012 08:08 PM
prostcelica F Bird can you please define a poser camlol.
What can would you recomend??
08-09-2012 07:29 PM
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.
08-09-2012 06:45 PM
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.
08-09-2012 06:16 PM
prostcelica 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) - Cylinder Heads - Chevy - Small Block - E-Street

As far as RPM range I dont plan spinnig it over 6000-6500
08-09-2012 03:03 PM
vinniekq2 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?
08-09-2012 02:52 PM
prostcelica 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.
08-09-2012 01:03 PM
vinniekq2 buy a bigger cam?
08-09-2012 12:51 PM
prostcelica More lift. Why?? Bad idea??
08-09-2012 12:18 PM
vinniekq2 why do you want 1.6 rockers?
08-09-2012 12:11 PM
prostcelica Thank you very much F bird that is great info. Solid roller it is. In your opinion do I need to be concerned about PTV clearance with the comp XE274 solid roller?? Id post the link for the cam but I'm on my phone. Sorry bout that. I will chech clearances regardless but I thought I remember you saying in a previous post you didn't think I'd have an issue. Cam specs are INT - 236@.50 .55 lift and EX - 247@50 .57 lift. I am going of memory on the specs but should be close. I'd also like to run 1.6 rockers.......what do you think??
08-09-2012 07:31 AM
vinniekq2 thamk's f-bird'88 thats very well written and easy to understand.Wish I could explain things that clearly
08-08-2012 11:20 PM
prostcelica I like the way you think vinnie
08-08-2012 10:52 PM
vinniekq2 how many race cares have hydraulic cams?
08-08-2012 10:48 PM
prostcelica Which cam will make more HP/tourqe with my setup?? not worried about having to adjust the lash once and a while if I go solid
08-08-2012 10:16 PM
vinniekq2 hydraulic doesnt need to be adjusted regularly. solid roller has lighter components so can rev higher. 6500 rpm seems to be where a rev kit is needed for roller hydraulic cams,not always
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