Roller cam tools
Comp now makes a new lifter that works in a LA block without the mods. Depending on lift.
Drilling the lifter bores and bushing them work with a smaller hole for oil.
The old way was put a copper tube through the oil galley and peen it open in the bores. This was better for 340-3 and up blocks. Drilling the bores on a high porosity block gets risky. If you ever have the right rear bore break out you will know what I am talking about.
340-1 and 340-2 blocks are usually OK most guys look for them for 358 sprint cars. X block have a higher nickle content so bushing them is OK. You'll never break a lifter bore on a 59 degree R3 or Resto block the bosses for the bores are huge.
Comp now makes a new lifter that works in a LA block without the mods. Depending on lift.
Drilling the lifter bores and bushing them work with a smaller hole for oil.
The old way was put a copper tube through the oil galley and peen it open in the bores. This was better for 340-3 and up blocks. Drilling the bores on a high porosity block gets risky. If you ever have the right rear bore break out you will know what I am talking about.
340-1 and 340-2 blocks are usually OK most guys look for them for 358 sprint cars. X block have a higher nickle content so bushing them is OK. You'll never break a lifter bore on a 59 degree R3 or Resto block the bosses for the bores are huge.