casting numbers on the ka24de head

[kdiggidy]

just trying to figure out the different casting numbers? i had a 53f head but its hammered. i bought a 70f head to replace it. was the 53f off the truck ka? is a 70f off a s13? the 53f came off my 92 coupe. the most noticeable difference is the extra valve cover bolt hole back center of the head. any info will help

[Nismofreek823]

Not sure what the casting numbers mean exactly. The extra valve cover bolt in the back of the head means its and S14 KA head though.

[kdiggidy]

so that means ill have no problem putting it on the 92 ka24de block. i just need to find a s14 valve cover. are there any performance differences between the two heads. any possible install issues.would i need to change out intake or exhaust to fit? thanks for the help at least now i know what parts im working with for this stroked ka.