is this too much cam for my 90 1/2 ton

[kennyhammond]

ok building a little motor for my 90 1/2 ton chevy this is the cam i was looking at

CAMSHAFT SPECIFICATIONS Valve Lift -- Int."/Exh." .488/.509

.050" Duration -- Int./Exh. 234/244

Lobe Seperation Angle 107/117

i am bulding a 350 with 2.02 heads ... stock tranny and highway gears... or would there be a better cam ...and need intake help also....thanks guys sorry i am sort of a newbie to the motor scene

[bubba353z]

I wouldn't want that much duration with a stock converter and highway gearing - it will be sluggish on the bottom end.

You're going to want a 2500 stall and gearing in the high 3s with that cam.

Look at the Comp Extreme Energy series - a 256 or 262 may be a better choice.

[kennyhammond]

Will any of the games you stated have a rough idle...or is there a different can you would pick ...what would be the biggest cam to run with a stock torque converter
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[bubba353z]

Comp says the 262 has a noticeable idle - and the 268 the max for a stock converter. I've never used either, but I'm sure someone here can chime in on the sound.

[bubba353z]

Remember - bigger isn't always better. The most common mistakes people make are too much cam and too much carb for the application.

[Captainfab]

An engine with a rough idle in front of a stock trans and converter, and 'highway' gears is not a good combination

Originally Posted by kennyhammond

Will any of the games you stated have a rough idle...or is there a different can you would pick ...what would be the biggest cam to run with a stock torque converter
Posted via Mobile Device

[Marv D]

Originally Posted by kennyhammond

ok building a little motor for my 90 1/2 ton chevy this is the cam i was looking at

CAMSHAFT SPECIFICATIONS Valve Lift -- Int."/Exh." .488/.509

.050" Duration -- Int./Exh. 234/244

Lobe Seperation Angle 107/117

i am bulding a 350 with 2.02 heads ... stock tranny and highway gears... or would there be a better cam ...and need intake help also....thanks guys sorry i am sort of a newbie to the motor scene

Unless I'm mistaken that's the same specs as the Edelbrock "RPM" cam, Summit house brand 1107,

Lets just use their description and see where you fall...

Lopey idle, mid-upper rpm power. Works best with 10:1-11:1 compression, 3,000+ stall, and gearing. Works well with N2O and roots blower

You fall in any of that desctiption ?

[djracer]

Loose the stock convertor.

[kennyhammond]

Well I just baught this can ..Crane energizer 100042 ... specs say it is 210/210 duration and 266/266 at 50" durations with 440/440 lift with 110 Lsa.... this should have a small rumble and still be OK with stock rear and tranny.... how will it idle ....smooth or will it be noticeable
Posted via Mobile Device

[bubba353z]

Originally Posted by kennyhammond

Well I just baught this can ..Crane energizer 100042 ... specs say it is 210/210 duration and 266/266 at 50" durations with 440/440 lift with 110 Lsa.... this should have a small rumble and still be OK with stock rear and tranny.... how will it idle ....smooth or will it be noticeable
Posted via Mobile Device

The Crane catalog says:

Good low end torque, smooth idle, daily usage, fuel economy, light towing, off road, 2200-2700 cruise RPM, 8.5 to 10.0 compression ratio advised.

[kennyhammond]

So it wont have any lump to the idle.... sort of bummed on that.... was hoping it was close to the comp 268 cam
Posted via Mobile Device

[Boogie_Man]

If you're a car guy, you'll be able to hear it. It's not huge but more aggressive than stock. It'll be a good cruising cam. If you're just after the sound and don't mind driving a turd on the street, that first cam is fine. The Comp 268 would've had my vote.

[GASoline71]

If you want noise and a turd cam... go for a Comp Thumpr cam...

Have fun.

Gary

[Boogie_Man]

Originally Posted by GASoline71

If you want noise and a turd cam... go for a Comp Thumpr cam...

Have fun.

Gary

hehehe, this was my first thought.

[84C10Chance]

I have this cam for my lil 305 with edelbrock intake and 600cfm carb. Works just fine.
It has a nice lil lope to it when it cold and you can tell a lil bit with it warmed up.

http://www.summitracing.com/parts/SUM-1103/

[oldblue1968chevy]

I used the vodoo 262 601002 (I THINK is the pN) im happy but i sometimes wonder what the 268 would've been like..lol

save up for a roller cam i wished i waited longer..

ps stay cear of thumpr

[NCD1966]

i have the comp xe268 cam, lots of low end torque, great street cam with a choppy idle

here is a idle clip
http://www.youtube.com/watch?v=WqyWa...ature=youtu.be

[GMR-PERFORMANCE]

268 is a great stick and has a a little chop to the idle.. I am LMAO about the thumper they sound like they can take on the world , thats about it.. never seen one make any great power.

[ll____b0t____ll]

Not that I am any kind of expert on Cams but I notice many people these days want the lopey cam sound and go about getting it wrong.
Many a decent engine has been made into scrap on account of someone NOT in the know thinking high lift numbers will get you lope.
So you get many people running upwards of 500 lift with stock 76 cc heads and a small runner with flat top pistons....this is a recipe for a turd plain and simple.
Not only will it not make power in the specified rpm range but youll be spending all your time at the gas pump do to failing to understnad flow.

Honestly I have tested this theory out enough that its nolonger a theory at all .
You can stay conservative in lift and get all the lope you want just find the right LSA
for your engine.
The higher the number say , 112 LSA is far less agressive than say 108 LSA which will have the lopey idle.
Its also woth noting that its not one cam fits all engines, whats a radical cam in say a 327 wont be so radical in say a 400.
Duration plays its part in lumpy idle aswell and i urge everyone purchasing any cam to call the manufacture and ask for real duration numbers at 50 not the advertised duration which 9 times out of 10 is well just flash for parts counter guys to sell cams.
In this day and age it boggles the mind why anyone building up an engine would not call and get a custom ground cam for exactly what they want.
Most companys will do this for $20-40 extra dollers if not cheaper.

And now we get the abomanation series of cams the "Thumper Cams" .lololololol
These cams are equivolent to owning a honda civic and putting a full 3 inch exhaust with a fart cannon muffler on so it sounds ticked off.
I assure you a civic with this mod alone is only ticked off at the owner that lost it miles per gallon do to no backpressure and torque loss around town.

But I am from a different group than most, I would rather my vehicle look like crap and look slow and mundane but scream like a teenage girl at a justin beiber concert.
After all what would you rather have happen ?
You catch a redlight in your 1968 camaro ss with your lumpy sounding cam and everyones looking like ooh ahhh so strong until the light goes green than a guy in a truck that looks like it just came off the field from feeding the cows blows your doors in because he simple had his combination right?

Dont get me wrong I understand wanting lopey cams on a budget but really isnt that being a poser?
If you want lope pick a cam that will work with some good heads that get your compression up and can flow with the duration and overlap, get the right springs to handle the lift and have an idle that isnt as impressive as when you nail it.

And just to show you I understand lopey idle heres my junk, ill square off with a vehicle running a thumper cam anyday in fact ill give 2-3 car lengths.
http://s239.photobucket.com/albums/f...t=M4H00620.mp4

[GMR-PERFORMANCE]

Having one custom ground is great however I would have to say most guys do not know what they need thus a custom ground is not going help.. with terms like killer idle, camming sound etc.. Marv and I both love the full race version 3.2 cams they rock and make great power.
























































Just kidding..