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there are more considerations than just which cam is the best, how the engine will be used, compression ratio, tuning solution, among other things, some cams will work better with lower compression, others are at their best with high compression engines.
 

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imo
there a just 3 commercial high rpm cam sets readily available
jwt C1's
2jr full race cams
stage 3 BC cams

all require head modification to clear the lobes
a special header and 3" total exhaust system

they work best with 11.5cr and higher

c1 cams on mine made power past 7500 rpm
and are worth considerable power over S1's at 6000 rpm and above

using race fuel ,very high compression and sleeved
i have witnessed over 250whp on the dyno for a non streetable full race engine

there are also lengthened rods shortened piston sets available
if shooting for 8k rpm use these rods and pistons and the full b16 crank

note raised piston pins
20160511_100937 by Barry Belgard, on Flickr

i believe Carrillo makes the rods

for full race setup
i used:

an internally ported [intake cut apart and rewelded] intake manifold
vq35de throttle body
jwt C1 cams
race header and 3" side exhaust
2jr cai modified for n2o
but a weak b16 rotating assembly [full b16 crank was the only part of this engine to survive]
stock block, bored for valve clearance

[yes valve clearance for the newbs,
bigger bore gives more swirl room around the standard valves]





CAUTION
this setup, making this kind of power NA will cost near what a built engine turbo setup costs
yes, i tried both ways

i did not have good luck with the b16 rods [and pistons] they were not up to big shots of n20
nor repeated 7500 rpm runs
[ok so we did near or over 100 drag runs]


btw
the built na motors [qr25de] CRAVE nitrous
woke mine right up

imo

DSCN0534_zpsc5518fec by Barry Belgard, on Flickr
 

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Discussion Starter #4
this engine will be install on my daily drive so ill like to get max possible whp with mid-high power band!!!
i came across some rz cams video, pretty much looks like you ll have to rev your engine until 5000 rpm to start getting some hp ??
so... c1s or bc3 using my qr20 pistons, b16 rods, kinfeedge crank wont get me more than 200whp ( which i have to be honest, i been hit with some facebook pm warning me about balance on knifeedge 2j crank. its true 2j crank its prompt to fail???)
 

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this engine will be install on my daily drive so ill like to get max possible whp with mid-high power band!!!
i came across some rz cams video, pretty much looks like you ll have to rev your engine until 5000 rpm to start getting some hp ??
so... c1s or bc3 using my qr20 pistons, b16 rods, kinfeedge crank wont get me more than 200whp ( which i have to be honest, i been hit with some facebook pm warning me about balance on knifeedge 2j crank. its true 2j crank its prompt to fail???)
imo
on the 2j crank
the 2jr knife edge crank was designed for exactly what your doing.

upgrading an NA b15
it's a way better crank [for na b15s] than the stock b15 crank
imo

it is difficult to balance for the average machine shop
a race oriented shop will have no trouble with it

on cams
not much difference between bc3's and jwt c1's
choose the set you get the best price on
imo

for street i would prefer the 2jr street cams
much more power below 5000 rpm

they beat my c1s till about 6500 rpm

and yes expect a little over 200 whp with a fully streetable engine

must use uprev
must dyno tune
93oct gas required

meth injection is helpful
imo

BTW
imo, imo, IMO
do not use the knife edge crank in Na b16 builds
the stock crank is better.

nor use it in turbo,SC,N2O builds which will see racetrack use
IMO
 
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