nissan use VQ
and infiniti use what VK?

which cars use which??

VK45 is the v8 engine
VQ, VE's and VE are the v6 engines..

all infiniti's that have v6's use VQ's....
all nissan's and infiniti's that have v8's use VK's

Did you just ask this question at Off-Topic.net? I just answered this question there.

The old Q engines were VHs, VH45DE in the 1st gen Q45 and VH41DE in the 2nd gen I've been told. VK45 is in the new Q45

what is the difference between VE and VE?

Same difference between VQ and VQ.

I think he meant VQ, VE, VG.
"G" and "E" kinda sound alike when you say them. Close close.

VQ30de 96-99 I30
VQ30de-K 2000-2001 I30

Not sure for 2k2 and 2k3

VQ35DE

here's a question, what's the engine code for sentra's and G20's?

Old Sentras and G20s used the SR20DE or the GA16DE, (the G20 only had the SR). 2000+ Sentras use either the QG18DE or the QR20DE

VG's are 160 hp found in 89 - 94 maxima's.. 89 - 91 all trims.. 92 - 94 GXE's..

VE's are 190 hp found in 92 - 94 SE maxima's