Quote:
Originally Posted by FishStretcher
As someone who has a 350 MAG MPI, I was curious. The specs for the LMG that I could find are not high performance- cast pistons, powder metal rods and cast crankshaft. That said, I don't know anything about LS engines.
What sort of revs are you thinking?
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Idle to 6500 I doubt I’ll get it out to 7k. The 243 heads are pretty good, I’ll port them, shave them, and put new springs and guides in. Maybe new valves if polishing seating etc is not enough. Cam will change the timing. It has a TBSS (same as ls3 intake). It’s a garden variety gen IV. But can be quite powerful and a good beginning point. I’m going to be trolling not much else. But it’d be nice to get where I want when I’m in a hurry.
The big difference besides distributor and direct port injection is the top end. Most 350’s required lots of work on bottom end to make power. LS blocks are (mostly) all same except for boring. That means throw a cam, intake, set of heads on you have instant power. Getting stuff here is the problem. I can’t tell you how much stuff never makes it here. So we have to figure it out, if we’re not rich.
Check out 3:36. Doubt that’s my cam. But that’s a pretty close setup to my goal.
https://www.youtube.com/watch?v=sbw8JFQ5KE0