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Old 07-22-2012, 04:47 PM
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For your Z/28 Id go right to the Comp XE solid street roller cams
EG: XR274R-10 K12-770-8 or XR280R-10 K12-771-8.

A true Z/28 LT-1 with +++ street power and torque.

These cams are as quiet as hyd cam when correctly adjusted. And the lash stays.
Big power. Easy streetability. once a year valve lash done easily cold.....012" .014"
These comp XE mechanical street rollers rock.

Use 1.5:1 Scorpion/Summit/Howards roller rockers

http://www.summitracing.com/parts/CCA-K12-770-8/

The K kits are a hell of a deal.
if you want to do something reall good for your Hot Ported Edelbrock heads and either of these cams
swap the rocker studs for 7/16" and get the 7/16" rocker. 1.5:1 ratio is fine.

If the comp 1.46" springs will not sit on the spring seats its a easy quick machining upgrade you or any machne shop can perform.

Your ported E Street head motor will rock with one of these moderate Comp Mechanical Street Rollers.

Last edited by F-BIRD'88; 07-22-2012 at 05:00 PM.
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