Thread: Cam choice for sbc

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Would 8 degress total be too much?
How would that effect my ignition timing?
Would I still start with about 10 degrees and 32 degrees overall?
I have degree bushings down to 2 degrees.

Originally Posted by 18436572

Would 8 degress total be too much? No
How would that effect my ignition timing? None
Would I still start with about 10 degrees and 32 degrees overall? Yes that will be fine. But no more that 36 totalI have degree bushings down to 2 degrees.

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it didnt show at first but did now thanks

Originally Posted by 18436572

Looking for advice on cam choice.

Currently, running vortec heads with Comp Cam oval springs and roller tip rockers, a Comp Cam XE262 cam, headers, edlebrock aluminum dual-plane intake with JET stage II Q-jet carb, Petronics billet HEI distributor, and Keith Black hypernuematic 10:1 pistons, and balanced to 6500 rpm.
I run a manual 5-speed transmission with a 3.43 posi rearend.
This is a daily driver and a lot of fun.
I want more horsepower and not concerned with gas mileage or idle quality.

Should I run a single pattern cam or dual pattern cam?

Looking around the 280 duration and 480 lift.

Thanks for the advice!!!

I think the Comp cams Xtreme Energy CS XE268H-10 will work great in your SB set up . It is 224/230 at .050 and 477/480 lift with 110 lobe separation . You can install it 4% adv .

Better yet, check the cam card when you get the cam in. It will usually say "No need to advance this cam, it is already advanced 4 degrees". Not in those exact words but you get the point. Almost all of comp cams have 4 degrees advance built into them. AND YES, 8 degrees advance will hurt your performance.

Just to clear things up... this is referring to cam timing. I believe you are mixing it up with ignition timing. This has nothing to do with turning your distributor. This has to do with the relationship between when your valves open and where the piston is when they open.

Originally Posted by 18436572

Would 8 degress total be too much?
How would that effect my ignition timing?
Would I still start with about 10 degrees and 32 degrees overall?
I have degree bushings down to 2 degrees.

If you have to move a cam "around" more than 4 degree's you have the wrong cam in it.

Gassers Rule and Racecar was right. I used a 282/292 with 480/490 lift and the cam is GREAT!!! Of course I run a 5 speed manual tranny with 10:1 compression and 3.43 posi in the rear - BUT - this cam is very responsive above 2500 rpm and winds to 5500 very fast. It is also well mannered on the street and in traffic.
If I had to do it over again - I would go even one larger.
I highly recommend this cam to all hot rodders.

i gotta remember u can go a little bigger in a 350 and not over cam it

What brand cam is that?

This is a Summit Racing brand cam. I have had good luck with these cams in the past and the price is right. I also like these cams because if you compare the duration to other cam makers, these Summit cams have a little less lift. This is important to me for a variety of reasons, but mainly due to my stock vortec heads.
And one other thing on this cam, I did install it 4 degrees advanced. I used the Comp Cam degree bushing I bought from Summit Racing. It was cheap and installed very easy.