"Not long" problem is when you stroke an engine you put extra pressure on the cylinder walls. Stock LA engines have thin cylinder walls depending how old the castings is. This problem gets worse if you bore it out. You need something like the R series blocks. I had a nicely built 360 (not stroked) that on the dyno had 440 HP. I brought it to a very reputal engine builder and requested a sonic test I was shocked to learn how thin the walls were at the top. I was able to locate an R3 block and was shocked how thick the cylinder walls were compared to my stock LA. We bored it out to 70 over and still had walls double what i would have had with the LA, I have over 200 runs on this engine with no issues, like overheating with an LA engine with thin walls just to name one potential issue. R3 bare blocks are selling for close to $7000
My 600 hp R3 engine is up for sale see it in our classified
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