318 question?
@cawest, if you've already got pistons in it (didn't see any in the pics, thought you just had the block) you need to figure out what they are- poly pistons are not compatible with LA heads because of the different valve order, layout and angles used with the poly heads- the valve reliefs are totally different. You will need LA pistons to go with LA heads.
Poly piston:
LA piston:
Flattops with no valve reliefs are also LA pistons.
Yes, the cam is different because of the different port layout, but the lifter angle remains the same 59* between the A and LA- this is the biggest reason the valvetrain geometry is so screwed up on LAs, and why DC/MP/Ritter etc. released the revised 48* lifter blocks.
@cawest, if you've already got pistons in it (didn't see any in the pics, thought you just had the block) you need to figure out what they are- poly pistons are not compatible with LA heads because of the different valve order, layout and angles used with the poly heads- the valve reliefs are totally different. You will need LA pistons to go with LA heads.
Poly piston:
LA piston:
Flattops with no valve reliefs are also LA pistons.