ESPSIX 143 Posted March 9, 2020 I’m looking at fitting Roller Rockers to my missus’s 351. Yella Terra street terra, but would adjustable be better than non? looking at a possible cam change later on, if that makes a difference. Share this post Link to post Share on other sites
gerg 10,871 Posted March 9, 2020 Adjustable is better than non-adjustable because you can allow for various factors that alter the rocker geometry. If you skim the heads, the rockers will need shimming or the pushrods will need to be shortened by the same amount, but if adjustable rockers are used, it's simply dialled in on the adjuster (provided valve tip contact is still ok). You can also go to a solid cam later.Sent from my CPH1903 using Tapatalk 1 Thom reacted to this Share this post Link to post Share on other sites
bear351c 10,270 Posted March 9, 2020 Agreed, Yella Terra do make them, as do Scorpion. 1 Thom reacted to this Share this post Link to post Share on other sites
