Re: So should I swap in a V8 too?
poorboy93 said:
No those aren't the LS2. Truck motors are iron block, lower HP.
LS2's are alum. block, and found in TBSS. GTO, and, SSR but not in the Silverado SS which is 360HP 6.0 engine.
See, the problem with that statement is that not ALL truck motors are iron blocks....
The new L92 motors are alum block 6.2's (and rated for 403hp), and are GEN IV (LS2 style) architecture with the cam sensor up front and the 58 tooth crank wheel (vs the GEN III style with the rear mount cam sensor and 24 tooth crank wheel).
And there have been other alum block truck motors in the past. There was an alum 5.3 used in alot of pickups (mostly extended or crew cabs) and some suv's (I think it's RPO L33, but can't swear to it).
The only motors that are LS2's are the actual LS2's (from the applications you stated). But there are an awful lot of other LSx variants that use the same architecture (either GEN III or GEN IV), and most of their RPO codes don't have S for the second digit (like LQ4, L92, L76, L33, etc).
Trizney said:
Being based on the same platform, that means an LSx head should mate up with the iron LQ4 block?
Trey
Affirmative. All of the LSx heads interchange. And before you start looking for LS7 heads to put on your LQ4, just note that some heads require different intake manifolds.
LS7 heads requires an LS7 intake. L92 heads require a compatible intake (L92 intake / L76 intake / or aftermarket L92 type intake). Most of the other cylinder heads use the common cathedral intake port configuration (used on the LS1, LS6 & big ugly truck style intakes).
'JustDreamin'