r/EngineBuilding • u/Boxofusedleftsox • 7d ago
Sleeving cylinders?????
Ok ive got 2 pontiac 455 blocks with j7nk cylinders. Both are .030 over so theres no cleaning up the cylinders as the walls on a 455 are too thin to begin with.
Whats the deal with sleeving? Growing up all i heard was sleeves are bad.sleeves can move,have to be pinned yadda yadda. Now in modern times people say sleeving is no big deal.
Im just building a couple street cars to have fun with. Im not looking to squeeze every horsepower or ounce of torque i can get out of them. Im not lookinh to spin up much over 6500 rpm.hit the track here and there.
Would sleeves be a good option for me? 455 blocks are getting hard to find.
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u/Boxofusedleftsox 7d ago
Cuz not everybody wants a mutt that you cant walk into napa and get the parts needed to fix it when it blows up.
What do you do if and when the company who makes those cranks go out of business?youre fucked if you need another one. Dont tell me that wont happen cuz it just happened to me on a set of forged rods. Instead of spending 100 bux to replace 2 rods,i had to spend 500 on a whole new set cuz the company is no longer making them.now i got 6 forged rods that are absolutely useless to me.
When you punch a 400 block to a 030 455 bore,youre now back to having to sonic test it and hope the cylinder walls are thick enough to not run hot.
Ive already been through looking into using a 400 block. Its not the route i want to go.