Looking for suggestions for a cam for this setup.. I want to be sure I still have vacuum for power brakes and can idle at a red light comfortably especially for A/C.

Olds 455 'F' block - bored out to 4.185
Pistons: DSS Racing FX Series forged flat top, 4.185" bore, -12cc, 1.75" CH
Rods: Scat H-beam 4340 forged, 6.735" length, ARP 8740 bolts
Cylinder Heads: Edelbrock 61025 Performer
Lifters: COMP Cams Evolution Roller Lifters 85701-16
Crankshaft: Original, undersized journals, polished and balanced
Rockers: Harland Sharp roller tip, 1.6 ratio - S5016
Intake: Edelbrock Performer
Pushrods: 3/8"
Oil Pan: 7 Qt Milodon
Oil Pump: Melling HV Pump
Timing Set: Comp Cams 3113 - from 2004
Carb: Holley Street Avenger 770 CFM (may have to upgrade to more CFM but using this for now)
Distributor: MSD Pro-Billet Ready-to-Run with older MSD 6AL box
Headers: Hooker Super Competition
Exhaust: Pypes 2.5" X-Pipe
Torque Converter: Coan Engineering 11" Pro Street, 2800-3200 estimated stall
Transmission: TH400 with Trick Kit
Rear End: 3.42 Gears with Positraction

Edit: +12cc on pistons. Compressions will be around 10.6-10.7 with a .040" head gasket

 

Maybe use a font that is readable?

 

 

Its just fine using the dartk theme lol

 

What is the planned use of the car ?

 

Mostly street and cruising, which is why brakes and a/c are important

 

That's a tough one. If I am doing the math right you are at almost 11.75 to 1 compression ?? I think its going to be hard to get a cam with the characteristics you want and still run worth a darn. I would have to call a couple of the cam manufacturers and ask their advice. Almost certainly going to have to be a custom grind.

How about an electric vacuum pump for the brakes ?

I think the performer intake might be a killer too.

 

Your going to want to stay below the high 230@50 and have a min of 110 LSA. Your 770 will be more than enough. Your going to have to run 92 or better octane and its best to have a non aggressive timing curve.

 

Should be +12cc on the pistons as it has a dish/valve reliefs. Compression will be around 10.6 to 10.7. Head gasket adds .040"

 

Roller or flat?

 

How deep in the hole do the pistons sit ? What are the head CC's ?

 

Roller Rockers/Lifters

Block has been zero decked, heads are 77ccs

 

So you KNOW it’s zero decked or they told you it was?

 

I guess I havent checked to be 100% sure, but I just got the block back from the machine shop and that was one of the things they were supposed to do. The surfaces were definitely milled.

 

Yup. Not sure what I put in the computer earlier to come up with 12.7 lol 10.88 is what I am coming up with now.

 

You can take as little as .005"-.007" off the block to leave "mill marks" and still be .020" in the hole. Did you or the machine shop actually CC the heads ?

 

Ok. Simple question, do they have the rod, crank, and piston info to determine what “zero” deck would be? I’m curious.

 

Yes, they had all the parts when it was done, and also did a crankshaft balancing with all the parts.

I will verify when I assemble it later, but assuming for now that it was done.

 

That's the cc spec given from Edelbrock.

 

They’re normally pretty close, maybe a cc or so off but normally pretty good.
With a 10.6ish comp ratio, your cam choices could go fairly large and still have decent vacuum. Just make sure you degree the cam correctly upon installation.

 

Is there a can you might be able to suggest, or have an idea of what durations/lift/etc would be good?

 

Dan,
I would reach out to a couple of the cam manufacturers with all of your specs and ask them to make a recommendation. I doubt that anyone here has a car/engine combination exactly like yours so it is very difficult to give you suggestions.

 

I have a grind that’ll work well in that, with plenty of lift to make use of the heads.
let me know if you wanna move forward with that.

 

sent you a DM @cutlassefi