Just got W9 heads, what now?

Problem is generally people assume W9 is better than W8 just because the number is larger. WRONG Then if you have a W9 that can be used on a 59 degree block you are backing the truck way way way up.

The improvements made with the Arrington's, W7's, W8's and W9's were in the port spacing and worked very well on 48 degree blocks because the lifter and pushrod spacing is corrected. Moving the lifter .250" seems like little to do and stand the lifter up towards the rocker by going 48 degrees is talked about alot. Problem is with the W9's you have just acquired you are limited with porting because the pushrod area required limits porting.

With only 367 cubic inches you would take substantial gains by going with a R3 block that uses 48 degree lifters. And the guys are right you are going to spend a lot of $ getting those heads ready for use.

Either set them aside for sale and buy some Indy 360-1 or something similar. Or figure on buying a block as it will be the best money spent considering what you are getting ready to do. Your heads can be worked as to take advantage of the R3 48 degree blocks.

Leon