I have a 78.4 strock crank and 160 spacers which makes my tubes short.What do you do for this problem? they dont seal very good

Bernie

spacers in back of/on the ends of the tubes?

never heard of longer pushrod tubes

Go get some for a harley davidson big engine--they are expandable and adjustable--use T1 seals on the case side and regular thick o rings on the head side--should work out--just a thought really--you got one wide ass motor huh??

What happened, wrong piston pin height and made it work??

I sell spacers that cure this issue.. They install under the pushrod tubes and allow .180 shims to be ran easily.. They are dirt cheap and waterjet cut from stainless

I custom make tubes for engines super wide, above .180 and they are not cheap.... with .160 you won't need them though my shims will do fine.

BTW The cylinder shims on the 3.0 are .400 on each side and thats even with a custom made longer (.200) Nickie....