Leroy_454

There hasn't been much talk of engine swaps on NNBS trucks yet. Can older GenIII engines be swapped in? I know the knock sensors are in different locations and the cam sensor I think. My truck is a 5.3L with AFM. I was thinking an LS2 for a Trailblazer might be the most direct swap. Not sure about the 6.2L with VVT. By direct I mean re-using the stock 5.3 intake manifold, TB, same styles injectors. Also bolting back to the 4L60E's. Any input?

mikeith

id like to know aswel becaus i can get a 408 ls2 pretty cheap

Leroy_454

Im mainly wondering what at minimum it would take to put in a Gen. III engine. LQ9 or LQ4 6.0 without the dod crap.

Freakenhye

direct bolt on guys, harness will need work.

Leroy_454

Im looking for more specifics. What about the reluctor wheels? I read they are different, but not sure what is involved with this issue. As far as harness work, do you mean at the knock and cam sensors?

jonnyperoni

dont mean to highjack, but what would you need to swap out an nnbs v6?

Leroy_454

A 4.3 would be a little more involved. If it were me I would just work with the 4.3, maybe go turbo. I have always wanted to do that with a 4.3. It might be cheaper to sell yours and get a v8 powered truck to start with, unless your good with wiring.

jonnyperoni

well i really dont wanna do anything with the 4.3...plus FI is expensive. idk how expensive for a 6 but i'd rather just swap in a 6.0 and be happy. Anybody know what all is needed?

nighthawk08

I think in 06 they changed the reluctor wheels...so sticking with a 06+ LS2 would be the most direct swap. 6.2 wont accept your intake.

Leroy_454

Thats good to know. I think a stock or cammed LS2 would be nice with full bolt-ons.