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View Full Version : Small base circle cam??



Carver67
03-29-2006, 01:56 PM
Hey all,
I'm just looking for some expertise/opinion on the following.
sbc 383 3.75" crank, 6" rods. 4.030" slugs
I have been told that there are possible clearance issues to be dealt with. The rods have been clearanced for the approx size cam I want to use, but do you think it would be better to use a small base circle cam to increase the margin of error.
If so....what will I need to consider when going this route??
Do they make taller lifters or do I just use longer pushrods.
Are there issues with cam flex with this style cam or am I just worrying too much? All info appreciated
Thanks,
Mike

rocketman
03-29-2006, 03:26 PM
you just have to tell the cam company you need a small base cam,they set u up.

Carver67
03-29-2006, 04:02 PM
Sure,
I can do that, I guess I was just trying to find out if there's a down side.
Mike

Lowend
03-29-2006, 06:46 PM
Its costs an extra $25 - $30 other than that no, not on a street car

Rick Dorion
03-30-2006, 05:31 AM
I've been looking into this. You'll need longer pushrods but I haven't heard of any downside. It seems a good safety net to me.

justanova
03-30-2006, 03:15 PM
I have no personal exp. with this, but I do know a lot of oval track racers have done a lot of this when messing with big inch strokers and I have never heard of a downside/problem with using the small base circle cams.

rocketman
03-30-2006, 05:18 PM
all the cirlce track stuff i do use small base cam's,we build alot of 393 and 406 dirt mod stuff.i have one in my 396 lt1,no problems

Lowend
03-30-2006, 06:19 PM
Any time I am dealing with a 3.75" stroke or longer (on a small block) I use a small base circle. Its just not worth the headache not to

Carver67
04-03-2006, 10:31 AM
Thanks Guys,
I appreciate the input.
Mike