View Full Version : Isky cam for BBC
longrodsbc
05-17-2007, 05:43 PM
Hey, will this cam work ok with a 11.5:1 496?
http://www.iskycams.com/timingchart.php?product_number=396277
The heads are Factory Oval ports, Ported, 2.25x1.88
The Intake is a Weiand Team G
2 1/8 long tubes
ATI 3600-3800 stall
4.10 rear gear with 28" tall tires
No carb yet,
Just worried this will be to much cam..
Thoughts?
thanks, longrodsbc
topsportsman1
05-17-2007, 06:16 PM
Is this going to be a drag race engine? Or is this a duel purpose?
I'm going to say that cam would have a hard time to run a SBC, JMHO
slowman
05-17-2007, 06:23 PM
what are you useing the engine for?
longrodsbc
05-18-2007, 07:31 AM
Bracket Racing Mostly, I will drive the car once in a while on the street but my main focus is racing.
The car is a 72 Chevelle so Im quessing the weight is 3600?
longrodsbc
topsportsman1
05-18-2007, 07:48 AM
I still stand behind what I said,in my last statement,
That is a single pattern camshaft,I wouldn't use it myself,there are alot better special grind camshafts out there,this is one of your "off the shelf camshafts" I go with a special grind cam.
The duration on the cam looks somewhat close,but the lift is a bit away from what that 3600 lb car needs JMHO
Also I'd go with a duel pattern type grind camshaft if it were me :idea:
You can get better
longrodsbc
05-18-2007, 09:38 AM
I agree, but I have the cam new in the box, and a new set of Howards direct lube lifters, Id hate to spend more money on a new cam if this cam will work ok, Has anyone ran this cam?
I dont want a snail, so Im open to suggestions..
thanks, longrodsbc
maxpower671
05-18-2007, 04:17 PM
yes, it will work fine
rtpaske
05-18-2007, 04:22 PM
It should work, although i'd recommend going with a roller cam vs a solid lifter cam.
I ran a roller cam that was bigger than that (.710i/680e, 278/276 duration @.050 lift) in a 488 ci bbc for several years with some ported iron rectangular port heads and it worked just fine. Was able to run a consistant 9.80 in a 3300 lb car.
edvancedengines
05-19-2007, 03:13 PM
Well,
I am going to have to disagree with my buddy Tom a little bit here.
It should work Ok but you will not have much vacuum if you have power brakes. Your bottom end accelleration will suck and throttle response at low speeds will suck.
I think that with a clutch and a 4 speed it would work a lot better than with an automatic.
To my way of thinking the lift is too low for the duration it is showing. Also did you notice that the gross lift is with rockers of 1.75? I think that it would really like some 1.90 rockers on the intake but those would have to be special made.
Did you notice the cam is recommended for DRAG, not street. That is becuase of the huge overlap.
With the large duration on the short LSA and the huge overlap it will lope like an old John Dear Tractor. That thing will probably still be loping while driving down the street below 3,500 rpm.
Like I said. I think it will work but will be a bear to drive unless you have low gears, big convertor.
I also doubt that your 1972 Chevelle will be weighing as low as 3,600 lbs. Those things only get lighter when they are gutted.
Will it work? - Yes.
Are there much better cams for it? - Tons.
Would I use it if I had to? - Yes. By installing it very advanced.
Will it work in a low compression engine for street driving - NO.
Will it work in a high compression engine for street driving ? - Much better.
Does it cost mure to replace it or use it? - More to use it.
Note;
The previous that is written is only the opinion of one man.
Ed
slowman
05-19-2007, 03:51 PM
3,600 lbs. Those things only get lighter when they are gutted.
Will it work? - Yes.
Are there much better cams for it? - Tons.
Would I use it if I had to? - Yes. By installing it very advanced.
Will it work in a low compression engine for street driving - NO.
Will it work in a high compression engine for street driving ? - Much better.
Does it cost mure to replace it or use it? - More to use it.
Note;
The previous that is written is only the opinion of one man.
Ed[/quote]opinion of two men i have to agree with ed. i would advance the cam time by 4degrees aleast to give you any bottom end.
123car
05-20-2007, 06:55 AM
Looking for for help on choosing a cam for my 496 bbc pump gas motor. I will be bracket racing this motor so I will be looking for consistency and it will also see minimal street time. The car is a 79 camaro at about 3800 pounds and will probably using a turbo 400 as suggested by the members on this site. The rear end and converter have not been chosen so any suggestions would be helpful. Cal-tracs are an option. I would like to run a solid roller cam in this motor. I have a super victor intake set up for a dominater and a set of brodix -2 fully ported and angle machined to 115cc with 2.300 intake and 1.88 ex. Intake flow is 375 at 700 lift and declines in flow above 700. In take volume is 350cc. I know these heads a large for this motor but I already own them . The compression ratio is around 10.75-1. Thanks Mike
123car
05-20-2007, 07:05 AM
Thanks Tom