[Stan Weiss]

Originally Posted by kpbrown31

Is it just me or is the Summit 2821 version of the cam much different? The valve lift looks considerably less, plus they mention a rough idle and the need for a 2500 stall.

I'm trying to buy an 041 replacement to throw in my 461 build. I will be running the factory larger chamber cast iron heads that came on the 455. I've seen posts on here that most of the 041 reproduction cams perform somewhat the same, so I was just going to try and find a deal on one and roll with that. This is a mild, strictly street motor.

Are people still happy with the Crower 60919 even though they dropped the LSA to 112, down from 113? Doesn't seem like that would help my street manners. I always worry about my power brakes and if I end up putting AC on the car down the road.

Can you post what spec you are looking at for the Summit 2821? When I do a Google search it shows .470 lift. Which is the same as the 041 is with 1.5:1 rocker arms

Stan

[kpbrown31]

Originally Posted by Stan Weiss

Can you post what spec you are looking at for the Summit 2821? When I do a Google search it shows .470 lift. Which is the same as the 041 is with 1.5:1 rocker arms

Stan

You’re right, I was probably looking at a different cam when I saw something other than .470 lift. But you can see they still recommend a 3000 stall. I do have a 2500 laying around that I could probably put in but I was hoping to stay stock. Maybe that stall recommendation is for a 400. I bet I’m on the shy side of their 120lb of recommended seat pressure, too. Check out this page from Summit Racing https://www.summitracing.com/parts/sum-2821

I had a shop check my spring rates, combustion chamber volume, etc when they did a valve job and put new guides in but for the life of me I can’t find my notes anywhere. I recently moved and I think it was lost in the shuffle. I know they weren’t quite 120lb though

[Stan Weiss]

Originally Posted by kpbrown31

You’re right, I was probably looking at a different cam when I saw something other than .470 lift. But you can see they still recommend a 3000 stall. I do have a 2500 laying around that I could probably put in but I was hoping to stay stock. Maybe that stall recommendation is for a 400. I bet I’m on the shy side of their 120lb of recommended seat pressure, too. Check out this page from Summit Racing https://www.summitracing.com/parts/sum-2821

I had a shop check my spring rates, combustion chamber volume, etc when they did a valve job and put new guides in but for the life of me I can’t find my notes anywhere. I recently moved and I think it was lost in the shuffle. I know they weren’t quite 120lb though

Yes, I do see that.

Good question.

By looking at their cam specs, I don't see anything that is different than if you were able to buy a real Pontiac 041 cam.

Stan