|October 31, 2008 - Sharp eyes will notice the giant "LS2" on the last engine.|
Okay, so I cheated on the picture. And here's the engine I'm really considering. It's marketed as the "Vortec 5300" and it's found in late model Chevy Silverado trucks. But in the 1500 extended cab 4wd versions, it's a special high output version called the L33. Unlike the usual truck motors, it has an aluminum block so it's a lot lighter.
It's also taller, but the LS1/LS6 intake manifold and oil pan should bolt right on. Hopefully it won't be too big a deal to drop the alternator somewhat as well. It's a 5.3 versus the 5.7 of the LS1, and that's simply due to a smaller bore. With the right parts bolted on, it'll basically end up a slightly smaller version of the LS1, and all the same hop-up parts will fit. LS6 cam, perhaps?
But the big reason is that they're a lot more affordable. LS1s are well known and are expensive. Truck motors are not sought after by most enthusiasts. I've been able - without trying too hard - to find a 16,000 mile example for under $1000 shipped. I'm sure I can do better. I'll still have to buy a few parts to make it work, but it'll come in well under the price for an LS1. And with 335 lb-ft and 310 hp, it's not going to be a slouch.