Ready to pick a cam

[lunatic]

Hi gang.

I'm ready to pick a cam.


Here is what I have:
440
Stock stroke
.030 dome pistons
Stock, large chamber iron heads
Static CR coming in around 10.5:1
Single plane intake
Throttle body efi setup with timing control.
Headers
4 speed

What I'd like:
Happy cruising manners, (no need for high rpm)
Able to run pump gas (ideally 87)
Enough vacuum for the disc brakes.
Some lopey sounds


I know I can use cam selection to bleed off compression and accomplish that pump gas goal, but beyond that my knowledge of cam stuff is very limited.

 

[493 Mike]

Why not call a cam manufacturer?
Mike

 

[BSB67]

IMO, you can't get there from here.

What piston is it? Did you actually measure everything to determine the compression ratio?

 

[sam dupont]

I would use factory Magnum numbers cam and a dual plane for happy cruising and occasional fun

 

[lunatic]

IMO, you can't get there from here.

What piston is it? Did you actually measure everything to determine the compression ratio?

it was a NOS set that came with the block.
My machine guy thinks they're L2295F's (or 7025P), and we're ballparking by the chart for the cc's. He's still working on cleaning up the heads. I did a little look for alum heads but doesn't appear anyone makes them big enough to get me anywhere near pump gas land.

 

[BSB67]

The 2295 will not be 0.030” dome, unless someone milled the dome down. The part number should be on the piston. The 2295 has a 2.030” compression height. If it’s a 2295 milled down to 0.030”, the CR will be less than 10:1, and maybe close to 9:1 depending on head volume, deck height and gasket thickness.

if you are looking to run 87 octane near sea level, you need to be below 9:1, IMO.

 

[RemCharger]

I read it as a .030  over domed piston.

 

[BSB67]

I read it as a .030  over domed piston.

Ahhh, yes

 

[RemCharger]

My buddies running a 2295 440 with edelbrock rpms.. it's not optimal for the street. Needs a good fuel mixture