are these rockers adujtable?

[chubba]

hi everybody
can you guys check this and let me know if there adjustable and if they are how
do i do it also theres pics on the head casting #s if anyone can help id what i have

 

[pacecarta]

t+d roller rockers are adjustable

loosen the nut turn the allen screw in the center to adjust then tighten the nut
but if you have to ask you shouldnt be messing with the adjustment

the heads are stock 8445 castings used on the 85-87 turbos and even the carbed 3.8 , cant say anymore on their current state but if they have T=d roller rockers they should have been clearanced on the pedastils sides and if theres a roller cam then the exhaust guides would have been cut down for seals
heads could be ported or stock you'd have to dig deeper

hard to see with the pic focus but the rockers can be 1.55 1.60 or 1.65 ratio , looks like 1.65

i also see ARP pro 12pt head bolts

 

[BobbyBuick]

those are T&Ds and yes they are adjustable. lash is probably .035 or 1/2 turn past 0 lash.unless it is a solid roller cam

 

[SPOOLN]

T & Ds

Do search on here to see the proper way to adjust valve lash and firing order. If you are off you could break parts....