evandostert Posted May 6, 2014 Report Share Posted May 6, 2014 Well I am going to do heads and a cam for my 03 ss I have so far cat back and shorty headers, yank 2600, FAST LSXRT, LS 7 M.A.F and 90 mm TB Purchased 243 heads. going to have them ported lightly and 5 angle valve job locally Thinking I found my cam XR275HR...222/224 .566/.568 112LSA Tooley spring kit 7.4 pushrods stock rockers??? not sure if an upgrade needed here. Maybe marine injectors if needed. Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted May 6, 2014 Report Share Posted May 6, 2014 You dont have to upgrade the rockers if you dont want. But if you do, there will be difference in the cam specs as rocker arms will change it a small amount. You will need a set if injectors. Quote Link to comment Share on other sites More sharing options...
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