Any drawbacks to using 1985 LA block to build 408 stroker?
The higher the number the more chance of porosity . Here is a X block race block 318-11 . This block took a lot of work to save it. If it wasn't a X block with 4 bolt mains it would have been trashed. The right rear lifter bore was mostly missing. If you look close at the pics you can see the burn from welding it back in with shartanium rods . The higher the number the more contaminants in the iron. Due to it being pored at the end of the ladle. The first pore is the best up to -6 they seam pretty good .
340-1's are highly sought after in the sprint car world. I have pictures of some 1's and higher numbers loaded side by side if I find them I'll post them. You can visually see the difference in the quality after cooked in an acid hot tank . Always try and find a low number. They usually sonic test true and less flashing.
From the hot tank to the rinse booth then the true casting is seen. Again if your putting some serious money in a motor for performance get a low number. The lower the better. 6 and under. I have 340-7's and up I get $250 for them. they are pressure tested standard bore we won't use them for a race motor. Good for a rebuild nothing with high horse power. Several here for pick up only.
The higher the number the more chance of porosity . Here is a X block race block 318-11 . This block took a lot of work to save it. If it wasn't a X block with 4 bolt mains it would have been trashed. The right rear lifter bore was mostly missing. If you look close at the pics you can see the burn from welding it back in with shartanium rods . The higher the number the more contaminants in the iron. Due to it being pored at the end of the ladle. The first pore is the best up to -6 they seam pretty good .
340-1's are highly sought after in the sprint car world. I have pictures of some 1's and higher numbers loaded side by side if I find them I'll post them. You can visually see the difference in the quality after cooked in an acid hot tank . Always try and find a low number. They usually sonic test true and less flashing.
From the hot tank to the rinse booth then the true casting is seen. Again if your putting some serious money in a motor for performance get a low number. The lower the better. 6 and under. I have 340-7's and up I get $250 for them. they are pressure tested standard bore we won't use them for a race motor. Good for a rebuild nothing with high horse power. Several here for pick up only.
