DazeMS

here are the specs.

SPECS:

Camshaft: Street/Strip

Catalog #: 4730

Engine: Honda/Acura B-Series VTEC

RPM range: Idle - 9,000 RPM

Advertised duration (in degrees): 288 Int/ 266 Exh

Duration at .050" lift (in degrees): 250 Int/ 232 Exh

Lift at cam: .316" Int/ .293" Exh

Lift at valve: .490" Int/ .454" Exh

Intake centerline (in degrees): 100

Lobe separation (in degrees): 104

Timing at .050" lift (in degrees):

Intake: 25 BTDC (open), 45 ABDC (closed)

Exhaust: 44 BBDC (open), 8 BTDC (closed).

I got a killer deal on a set of these and will be running them on a ported p72 head with the supertech sping kit, stock valves.. head is milled .0005. stock head gasket.. bolt ons..

what are ones thoughts on these cams and have they preformed?
overall im getting them tuned with the things above on a stock bottom end b18c. so if noone has a dyno print out i will in a few weeks.. lol

oh yea.. i picked a brand new set up for 295$ shipped

tempsohc

cams a great for your combination.

blackeg

ive been looking at them myself to replace my itrs (in a turbo car though) but havent purchased anything yet. the intake has a good amount of lift 12.4mm but the exhaust cam seems a bit small comparatively especially in terms of duration.

very curious to the results

DazeMS

i noticed this as well... however, i have also noticed that most other popular cams have the duration either equal too or close to equal for both int. and exh.. which in my mind, lends me to believe those cams havent really been designed and tested thoroughly. Most of the allmotor guys i see run a less aggressive exh. cam.. IE pro2 cam on intake and itr cam on exhaust. i trust edelbrock more then most companies, as they are one of the few that design and test their products in house over and over. plus , they are made right here in the USA.. not chinese made metal.. yea yea.. blox this, blox that.. or skunk this , skunk that. its just how "I" feel about it though, so no one should get all ished out..

DazeMS

bump

Natural Aspirations

When has anyone ever done that nonsense?

DazeMS

ive seen a few people on HT run two different profiles. not exactly sure on the two brands, as i was just giving and example. but none the less, ive seen several. lol

"Tested these cams 2-3 years ago over a type r intake cam and gsr ex. And made 40 whp more at 30lbs. This was on a 67mm car making 720whp. Also used them on a car making 880 that went 9.2" on a discussion based on results using the 4730 camshafts

Natural Aspirations

That's not even close to the exaple you gave. The reason folks run the ITR/GSR combo is due to cost/bennifit weight.

DazeMS

i cant find the other posts, but ive seen someone run tuner cam and an itr cam etc.. and weight from a gsr cam to an itr cam? really? cost? really? considering used itr cams cost more then what I paid, cant really see what benefits you are referring too.. either way, this is off topic.

i should have my head built in a few weeks with a dyno before an after to post for ALL to see.

Natural Aspirations

ITR exhaust cam has little bennifit over the GSR for the added cost.

That being said I'm interested in seeing results, I don't think these cams are a bad choice at all. I may pick up a set of these to have around for the price.

DazeMS

i went with brain crower springs/steel alloy retainers instead.. was able to get a better deal. From what i read, they are the same as the supertechs?

but yea, im anxious to get this setup done. I just received the cams today. they look like they've been sitting on the shelf for a pretty long time! lol

here is the list of mods etc. for the b18c

96+b18c jdm version
Rocket cylinder head (p72)
Skunk2 intake manifold
aem cold air intake( full cai)
jdm 4-1 2.5'' collector
magnaflow highflow cat 2.5'' in and out
2.25'' inner exhaust N1 style
edelbrock 4730 camshafts
brian crower valvetrain
stock valves
A/C delete
Gates racing timing belt
Skunk2 Pro series Ti adj. cam gears
Chrome Pro

stock block

Natural Aspirations

Do you have a micrometer? Can you check the lift on the small lobes?

Zero across the base circle, measure peak lift. Multiply by 1.55 and it wil give an approximate number.

DazeMS

ever since i moved i sold off a lot of my tools, including the micrometer.. :/ I will have the shop do this for ya. sorry for the wait lol

Natural Aspirations

* 1.49

That would be awesome! I may just pick up a set after reviewing the specs the intake cam looks fantastic, the EXH cam LOOKS to be a little small but just speculation.

DazeMS

the dyno graph at the end looks extremely smooth.. very usable power curve.

blackeg

also interested in the primary specs, hopefully a bit bigger than stock itr

just wondering where 1.49 came from, i thought the b vtec rr was 1.55?

lets get these bad boys measured, installed and dyno'd!

Natural Aspirations

1.55 is vtec 1.49 is primary from my understanding

Natural Aspirations

Some of these numbers are at 1mm others are at 0.050" I need to sort that out, so all numbers may not be comparable.

I used the cam card numbers for each cam, the N1's do not measure to the spec as far as lift they fall between GSR/ITR.

Salami

Too bad they aren't making them any more.


I should have picked up a set when Edelbrock was blowing them out for $178 a set.

DazeMS

yup, which is a shame. They did come into the game abit too late to be honest. I mean, they couldnt even develop a name in the import scene at all. Most people only care about names on a fender, vs actually making a motor run. Thats why to this day, most people will never take the import scene seriously.

DDTECH

You can still have them, they just wouldn't be 178 for a set.

bigG

iTrader: (6)

Similar to the crane stage 3 intake cam and stage 2 exhaust cam just put in a boost setup less duration though

Natural Aspirations

I ordered a set.... Looking over how similar cams respond they appear to be a good choice for a street car:

ITR/Blox/S2 manifold
Ramhorn/mid length turbo manifold
Mid-size turbo 5858/GT30
~400-500

Interested to see how they stack against my previous comparisons.

blackeg

U guys think they stack up well as a good option compared to itr or tuner1's

Natural Aspirations

Should be comparable, only one way to know!