roller cam or flat tappet?

Gus Loza said

i have a 408 stroker shortblock that iv ehad for a while. but i dont know what cam i have in it. how can i tell if its a roller or flat tappet cam. it never had the lifters in place. asking because i ordered edelbrock heads with the double springs. says its for roller cams only. should i just order a new roller cam that best fits my setup? i dont know lift, duration for this cam. thanks

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Gus, goggle pictures of roller cams and then Hyd./solid flat tappet cams. You will see the difference on how the lines of the cam look. Once you figure that out then it is time to take the intake off and the front end down to remove the cam and look for numbers stamped or engraved on one of the ends. Normally the front.
Like scampy said.

The cam should, but not always, have the manufacturer stamped/engraved on the front. You should be able to look up the numbers on the cam. This will tell you not only if it is a roller or SFT cam but also from the cam manufacturers site what the specs are. Then cross reference on over to the spring requirements. See if they are within a few pounds of the Edelbrock springs.

The cam you have, SFT or roller may have spring requirements equal to what the head cams with. At this point, roller cam or not, the spring requirements should be met.