The Isky triple 12 212/212/112 Went 10.5@130mph in my full weight 4x4, lq4, T78/68 14psi pump 91 on 245/17 street tires not trying to run fast. Combo has a ton more left in it with the slicks and good fuel.

 

Dang thats a pretty decent run.. how does that cam run in a NA setup? Has anyone ever tried it?

 

over 90k running around 13psi. still running good..

 

I've never tried it in a 5.3 but ran it NA a little while in my lq4 and it had tq almost like a old school big block. Seemed to level off around 55-5800rpm but Will rev past 6k. Id expect a little more bottom and mid range vs slightly less top end vs a 212/218.

 

I was looking at doing the LS9 cam, seems like some people have had success.

If I don't go that route though im going the isky route.

I'm going to put the "boost on a high mileage 5.3L" to the test as well. I have 164k and im trying to piece together a kit. In the end, even if it pops another 5.3L can be had fairly cheap so it's no biggie

 

136,760 miles on my bone stock L33 and turbo.

 

My green truck'si orig motor had 173k on it with perfect ol pressure and a compression test that amazed me. I kinda want to swap it in my 87 Blazer with a 72mm now

 

I just bought the most recent issue of LS-series power by car craft and the main subject was turbocharging a high miled 5.3, awesome article and after reading that you have no worries up to almost a 1000.