The Camshaft Mega-Thread!

[idahotuner]

this is to everbody but i'm going to stay with the stock t25 for now doing alot of bodywork and rebuilding my sr so money is tight in a few places but with the stock t25 would it really matter to do cams? know i want jwt components mainly s3 cams but a need for now?

keep stock cams for stock turbo. otherwise you will experience boost lag. if you are planing on builing later then save the money for when you can do cams and turbo at once.

[Rapeacivic]

that is pretty close to my set up^ cept i have a redtop sr20det.

350 should be dueable depending who does the tune.

Thanks for the reply, I will probably be going with a enthalpy ecu tune and a apexi safc neo. Here in Spain it is hard to find people that know how to tune a ecu, and i don´t have any experiance, so a stand alone is not for me.

[idahotuner]

^ enthalpy is good. that is who tuned mt ecu. and once i get the car finished and get it to a dyno i will send it in for a re flash after the dyno run. i am not even running a SAFC

[supradealz]

my setup;s13 blacktop sr20detgt28r turbomade 308rwhp on pump gas

installed hks step 2 cams. didnt put in adjustable cam gears yet. made an extra 17hp but lost a TON of power on the bottom to midrange, almost 30hp at low rpms. the area under the curve is WAY lower.

also the shop told me springs werent required. well they are. so they need to go back in to either upgrade the springs or swap the cams.

i want to know, i like the low end power but the stock cams drop most of the power off at 5k-5.5k rpms. whats the difference between the 264 step2 and the 256/256 step1 or 256/264 step1. also how much difference does the lift make and will i notice it with a gt28r?

[ComANDO]

okay so heres my deal... im in cali ive been buying parts over the years.. im getting the tomei 260 cam with 11.5 lift hks springs (i read the debate and if what i gathered was true the guys that make the cams make their springs for those cams hks and tomei both make cams with 11.5 lift so if hks spring are made for 264 cams w 11.5 lift then they should work just fine with tomei 260 with 11.5 lift. right?) bc retainers 3 angle valve job (400 with replacement of ex valve guides but im starting to feel like i got ripped off) and 1.2 trust head gasket. now when all is said and done i just want to make 300 whp comfortable with a red line at 7500 im not going for anything spectacular but i wanted to see if anyone has had experience with the 260 proncam from tomei and if they are worth their weight. otherwise ima just go for the 264 and call it a day... btw im running a s15 t28.

[ComANDO]

whoops... forgot.. crower retainers and hks RAS (also all the lil extras )

[idahotuner]

You did all of that to make only 300HP?256 cams would get you 300 HP no problem.

thisis kinda how i see it.

256 for 300+-264 for 400+-272 for 500+-not sure what duration would come next.

when i do my head stuff i liek to stick with the same company for everything. because. it makes sense that if a company develops something then they developed it to work with their other parts.

[kentuckyslider]

OK, I joined nico yesturday and have read all 5 pages of this thread. I guess I am going with the BC or HKS 264's and BC springs and retainers. I am also adding a top speed intake and considering a tomie 70mm throttle body. Don't see many people with this upgrade. Do you think it's worth $350 if port matched to the new intake??? I am considering upgrading from my gt2871 .64 ar to a gt3076 .64 ar with internal gate. I am limited to about 450whp with my 72lbs injectors and JWT tune. Two questions...... #1 At what rpm will the gt3071 or gt3076 with .64 ar make full boost and #2 will the 264 cams still compliment either turbo nicely? I wanted 400whp but it will be a stretch with the gt2871 .64 ar and should be easily achieved with the bigger turbo. I just don't want to run out of rpm since I am rev limiting at 7500 and will still have a stock head and no solid lifters.

[kentuckyslider]

After some more researce this is what I have came up with...........CAMS & SPRINGS PRICE BREAKDOWN..............1. BC cams and springs $350 for both on JGY2. HKS cams and springs $685 on mySR20.com3. JWT cams and springs $900 on JGY4. You could save another $55 by going with Greddy or comp springs, but I decided it was worth the $55 for matching components.The HKS cams were only $125 cheaper than the JWT but the springs were also over $100 less. I have heard mixed reviews on BC products but I had to go for the middle of the road. You ALMOST always get what you pay for! I find it hard to believe that JWT makes that much better product than HKS?

[idahotuner]

get your stuff from phase2.

i went BC springs and cams. kept stock retianers.

use the .64 to meet 400 is easy. it is my goal. and should be attainable.

[ComANDO]

so ya head project is on hold... grooves in the chambers.. all four more than .03mm and signs of pinging.. so looking for a long block. hooray

[migsk8]

Quick reference of Turbo and Cams to choose.

T25...Stock, 256/256T28...Stock, 256/256, 256/264GT28RS....256/256, 256/264, 264/264GT2871R .64.....256/264, 264/264GT2871R .86.....264/264, 264/272, 272/272GT3071R .63.....264/264, 264/272GT30R.....264/272GT35R.....272/272

Im sure this will bring in some kind of debate. These are the setups i would consider though. Lowest Cam profiles being for low end response for drifting and highest profiles being for max power for drag racing.

what will go good with a garrett t3/t4, i think its a 67 trim

im about to buy BC 264/264's, i want 400whp but be able to drift too, if that helps any

[idahotuner]

the 67 trim is equivalent to a gt35. so you would want 272 cams or possible a stagger set up

[migsk8]

well sinse i wanted to drift, my super dori senses are telling me 264/272

[migsk8]

also, should i get solid lifters?

im not exactly clear on that whole lifter part

you can rev higher?more reliable?

someone blab about lifters please

[migsk8]

bump, i still need answers

also i think i might get a good deal on a T04e, or something in the family of a gt35r

would i benefit better from spool from a 272/272 setup with those turbos?

and do i need solid lifters?

[idahotuner]

you only need solid liftors if you plan on reving over 8000 rpms.

the gt35 is too big of turbo for drifting really unless you go twin scroll. which cost bucko bucks

[migsk8]

you only need solid liftors if you plan on reving over 8000 rpms.

the gt35 is too big of turbo for drifting really unless you go twin scroll. which cost bucko bucks

i love you for clearing things up for me , but i need something else cleared up, about the difference between 264/264 and 272/272. i plan on upgrading springs and retainers anyways, i will prob end up getting the t3/t4. the 272 will just give me more power correct? that should be the only difference....right?

[idahotuner]

fora t3 t4 turbo the 264s or 272 cna be used it al ldepends were you want the power band to hit. do you want it to hit about 4 grand and pull to 7 or do you want it to hit about 5 grand and pull to 8. the 264s will get you more tq and the 272 will get you more high end hp

[migsk8]

fora t3 t4 turbo the 264s or 272 cna be used it al ldepends were you want the power band to hit. do you want it to hit about 4 grand and pull to 7 or do you want it to hit about 5 grand and pull to 8. the 264s will get you more tq and the 272 will get you more high end hp

isn't that were staggerd cams come in useful?, because it sounds to me this is where 264/272 and adjustable cam gears would come into play?

[DrifterProdigy85]

GT35 is too big period on the SR for drifting. Twin Scroll wont make it spool any faster, it just gives a bump in tq from the increased exhaust velocity.

If your going something GT35R or larger, then do a solid lifter setup. Its worth it since the turbo can flow at higher rpms.

Staggard setups really arent worth doing. You loose the power gains where the cams are meant to be just so you can get a little added tq in the midrange which wont help you anyways if the turbo isnt made for that area to start with.

[DrifterProdigy85]

Lets make a new updated list of how to select the right cams. Im gonna base it on the flow rate (lbs/min) of the turbos. So to eliminate alot of "what cams should i get questions", just follow this list and you should be perfectly fine.

30-40 lbs/min - 250 duration cams 40-55 lbs/min - 260 duration cams 55-75 lbs/min - 270 duration cams75+ lbs/min - 280 duration cams

[migsk8]

that works

[vanquish2]

I'll just throw this up here cuz I saw a lot of you asking about 272 BC cams....

I put some in last year with a 2871r and ran them for about 1000 miles. Decides they were mismatch for my desires so I pulled them out and went to 264's

If anyone wants them I'll make you a deal....they are still in GREAT shape. They were used with the proper shim so they wore perfectly. It's something that alot of people look past.....shim need remeasured after valve work.

Anyways....if you want them $150 and they are yours! Let me know

317-538-9542

[kentuckyslider]

I run a 2871 48 trim .64 ar turbo and I finally decided on the Tomei procam 260 duration and 12mm of lift with BC springs. JWT recommends the S3 or C1 cams and this should be a good mix of both for my application. With the same duration as the S3 (260) and the same lift as the C1. I'll let you know how it works out on the dyno. By the way the tomie 260's and BC springs were $525 shipped from P2M. The JWT cams and springs would have been over $900.

[ryanmasters240]

Im currently running HKS 272's in my setup and aboutly love them. Idle isnt that bad either

[tweakit]

Ok im goin to be manily autocrossing and drifting my s13. im looking for 300 -350hp. i want to have minimal turbo lag. whats a good turbo/cam set up.

[vanquish2]

gt2871r .64 and 264 cams non-bc

easy as pie!

[240sxHitman]

ok after reading through this thread i have an ideal set up based for just a fun street car

2871r .64BC step 2 264/264 or Hks step 1 264/264(which ever is better)BC valve spring + Retainer kit(Might as well upgrade do it right the 1st time)

what do you guys think?

[hbpignosePA]

alright i read through the thread and there seems to be so much information on matching turbo sizes to cam selections. What about N/A choices for cams?

most N/A cars cams are one of the more important aspects for power gains. i was thinking of doing an N/A s14 Sr with built a head, (cams, cam gears, springs etc and machine work) .8 mm (slightly raise compression) and eventually custom fab a ITB setup

what selection would be best suited for this type of setup?

also tuning? is stand alone the only way to go? i would have to eliminate the MAF, since i wasnt planning on making a pelenum.

i know its not a typical setup, but i just wanted to see if anyone had any input