So I'm building a 7ac to put into my ae71 with a friend

and we figured we may as well do a little bit to make it last a while.

 

7AFE Block and rods

4AC head

=

7AC

 

getting cam reground etc, but just wondering if there's any options for heavier duty valve springs, i know with the 4kc you can use v8 holden motor ones, are 4ac the same or would i need to get some sizes and go through some part bookets?

 

thanks

hey mate...

 

i built a very tough lil 4ac when i first modded my ae82...

 

get in contact with crow cams and they will help you out with valve springs!

they custom ground a cam for my engine and supplied it with some double valve springs!

should suit exactly what you are after!!!

 

cheers, moe