I found a couple cams so far that have "caught my eye".... Im looking for higher rpm horsepower and cant find too many cams that go past 4500rpms.. Crane has 2 that I found so far and their specs are as follows:
Duration @ .050- Int/228 Ex/238 Adv Duration- Int/290 Ex/300 Lift- Int/460 Ex/480 Range 2500-6000 Cam #2 Duration @ .050- Int/248 Ex/ 258 Adv Duration- Int/310 Ex/320 Lift- Int/500 Ex/520 Range 3800-7200 I think Cam #1 is a better choice but I want opinions.. Also someone mentioned to me about needed a higher stall converter for a more radical cam?? Is that true? Im gonna be upgrading my trans with a shift kit and stall converter anyways so is there a certain speed I should get just for the cam or does it not matter? Thanks

 

cam 1 would need about a 2,500 stall and cam 2 would say about 3,500 either way both cams will have to much overlap to use with a turbo, u want something with good lift and minimal overlap, i swaped back to the stock cam for my build though ill prolly get something slightly larger down the road

 

Dont they have good lift??

 

there ok for lift but way to much duration

 

i just got the MTC-5 cam on saturday and im hoping ill have it in this weekend, but ive still gotta put the rest of the engine together. its down to a short block. oh, i also got those poly motor mounts to go in as well.
doward loves the MTC-5 cam for a turbo, you can also check on a couple other sites for 4th gen v6's, see what a few that are turboed are running for a cam. if youre going the turbo route.

 

Areyou upping your compression ratio from stock?

 

i highly doubt he is were both building turbo motors

 

Doesnt boosting your engine technically up the compression anyways??

 

well technically it doesnt, but basically it does the same thing to the air. only supercharging methods are more efficient at compressing air than the engine is, so you get mor power/more air than you could just by upping compression.

 

So I need a cam with good lift and less duration for a turboed motor?

 

it can have a bit of duration as long as it doesny have much valve overlap

 

How do I check for valve overlap??

 

LSA and open/close points. lower LSA directly translates into more overlap with the same shaped lobes.

 

Would this be a good cam for a Turbo'd 660? Intake duration @.050 - 252Exhaust Duration @ .050 - 260 Intake lift - 570 Exhaust kift - 570.... Its a Solid Roller cam...Its one of the lower duration cams ive found but still has high lift...

 

that cam actually has the most duration out of all the cams you listed(and the most ive seen for a 660) . . . SAE duration is measured at .050 lift. that one is 252/260, the others you listed were 248/258 and 228/238. if you want a good cam you have 2 options. 1. build your setup around one of the available cams, or 2. get a custom grind with exactly what you want. there just arent that many cams out there, especially for boosted motors.

 

Well when I was searching I was seeing cams with duration in the 280+ area

 

thats probably advertised duration, which is duration at anywhere from .001-.009 lift usually. obviously duration at .007 would be longer than at .050 on the same camshaft, usually in the order of 40+ degrees. As you are probably realizing camshafts are pretty complicated, you can even have two camshafts with the same numbers for max lift, SAE duration, adv duration, LSA etc and still have two totally different cams because of the exact open/close point and the exact slope of the lobe at any one point(although generally all those numbers will get you in a tight grouping that should perform similar).

 

Are any of the cams from this company good? www.schneidercams.com

 

sorry, i dont mean to jack your thread, but im gonna have to rebuild my NEW 3.4 already, (cooked rings) so which cam would anyone suggest to give good performace for daily driver thats fully P&P'd, with headers and 1.52 roller tipped rockers, and a lopey idle?

 

h272 or the 228/238 crane cam if you want a rough idle. basic range will be like 2500-6000 though, so if you have an auto you would want a higher stall converter for the second cam. both of those will require new springs and tuning. although with P&P and headers you would want to tune it anyways. you may be able to get away with the h272 without a retune, although you'll probably only be getting half of what you could out of it.

hmm, ive never seen that site before, and they seem to have a bunch of unique grinds.

none of their solid cams are any good for forced induction, they have radically low lsa's (106-108) with way to much overlap. even the hydraulic cams have pretty low lsa's(110), which is fine for n/a, but you probably want at least 112, maybe 114.

 

Yea well it took me about 150 or so pages of google to find them lol... If I could find a place to do a custom ground cam whats a nice cam to go with thats better than the Melling MTC-5?? I want the choppy idle and Im gonna have a 2800-3200 stall converter.

 

For a 7000rpm 16psi 3.1L motor, I was recommended a 218/218 single pattern cam, and a 220/220 (both @ .050" lift) and approx .510" lift for our heads.

Don't run a massively radical camshaft, especially for forced induction. The overlap will kill the midrange torque.

That lopey idle is from a lot of overlap - that is counterproductive to boost.

For you, with a slight lope (which, btw, the MTC-5 in my setup does have a VERY slight lope) I'd suggest something like a 216/216º on a 108-110 centerline, with like .520" lift.

That should give you a little choppy sound, without killing your power too much.

Keep in mind, though, your cam WILL NOT flow any better than your heads/exhaust/intake.

That means you want to port those heads, get some header action going, and a new intake, otherwise, you are shooting yourself in the foot.

 

Well my spare set of heads are at the shop waiting to get fully ported and polished... Im using the stock exhaust manifolds for my turbo setup.. can I port them?? My new plenum is still on paper cause Im waiting for my TPI throttle body to come... Them Ill start getting it machined

 

Depends, post the flow sheets after the port/polish. Even with headers, I'm still sticking with my recommendation, though, for a good all-around street camshaft

 

Can you call me 517 285 5236 I need info on the 3.4 swap Glenn