View Full Version : 20r/22r

08-07-2006, 11:30 PM
pulling my head off to port and polish soon, and was thinking of putting a 20r head on, what do i have to change and i want to keep power steering,
what kinda of power diffrence

right now motor has cam, msd coil and header once head is port and polished

08-08-2006, 08:20 AM
20r head wont go on a 22r /85 block . deck heights are different . you'd have to go to a /84 down block .

08-08-2006, 12:47 PM
ok then i don't want to change out my block

08-08-2006, 05:57 PM
just for your info Craig ... http://www.members.shaw.ca/slacker502/technical.htm and click on the "R" series engine .

some reading for ya .

08-08-2006, 07:43 PM
There is a 2mm difference in deck heights between the 1984.7 and 1984.8 22R blocks. If a person were to get interested in the "ultimate" 20R/22R Engine they would want a PRE Power Steering/Mechanical fuel pump 20R head and as early as possible 22R block.

08-08-2006, 08:57 PM
thanks slacker
ya, if anything i would drop a 4.3 in