After the fact... I hear people say that, but five years ago... wasn't the case. We were still in the 'what do we want to do' phase with regards to the engine, so we wanted something that could handle 700-800 horsepower and the only build that could was a full-on drag race build, which I didn't want. The 4L60E could be electronically controlled and was built as a Stage 3 build, handling that kind of power. I also have more options for a close ratio planetary set, built to handle up to 1,000 horsepower.Dunno why it was said the 518 won’t handle your goal, needs to be educated. The 518 is basically a 727 with overdrive.
Just curious. Having heard all the tunnel, and cross member cutting horror stories, how was the fit of the GM trans? Any cutting? Where?I posted some pics of the engine in another thread, but here they are again so you don't have to search:
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No cutting at all, just a little 5lb finessing here and there, but it wasn't too bad. The one spot that was an issue was the one reinforcement hoop at the rear, that was in the exact spot for the speed sender, so we had to flatten that out a little. The article for the installation has some good pics of how we modified the tunnel and the trans mount:Just curious. Having heard all the tunnel, and cross member cutting horror stories, how was the fit of the GM trans? Any cutting? Where?

