Technical Information - LC Engineering

Technical Information 22R Intake Port Late 22R Chamber 20R Intake Port 20R/Early 22R Chamber ... While the 20R motor hasn’t been made in over 20 years, we still get a lot of customers that use the 20R cylinder head. ... The 22R head can not be used on an early block, due to the closed chamber design of the late heads and the ... ................
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