Cam, stall, gear ratio question

[Andrew Warfield]

In my 1995 4-door Tahoe I have modified the entire drivetrain and I would like some opinions on my choices. My main concern is the cam, stall, ring and pinon ratio combination, is my combo a good match for my purposes? Would there be a better combination? My purposes is that this Tahoe be a street car that is serious fun for cruising short distances, around town mainly, not a whole lot of highway driving. No track time but I do want to have as much power and acceleration on tap for the fun factor. I am not as concerned with mpg as I am smiles per-gallon. This vehicle is basically a toy that is driven a few times per week, not a daily driver. I want street drivability but mpg is not really important. Ok, here is what I have completed so far:
GM 350 Crate Engine Long Block #12568758 (2-Bolt Mains/One-Piece Rear Seal/9.25:1 Compression with 64cc Heads) - Installed 2016
Transmission: 4L60E - Rebuilt 2019
HGH Electronics Compu Shift 4L60 ECU
FTI Lock-Up Torque Converter (ESR3082): 9.5in./2800-3000RPM
TransGo HD2 Shift Kit/Corvette 2nd Gear Servo/Superior Billet 4th Gear Servo/Sonnax 3-4 Pinless Accumulator Piston
Richmond 4.56 Gears
Eaton TrueTrac
Edelbrock Pro Flo 4 EFI System (35770) 35 Lb/Hr Injectors (Can support up to 550hp at 58 psi.) Edelbrock Distributor/Ignition Coil
AEM Fuel Pump/Adjustable Fuel Pressure Regulator
MSD Street Fire Ignition Box/AC Delco Spark Plugs/Jegs 8.0 Wires
AFR 180 Fully Assembled Cylinder Heads (0918) 65cc Combustion Chamber Intake Valve Diameter: 2.020in. Exhaust Valve Diameter: 1.600in. Max Valve lift: .600in. (I am guessing the final compression ratio is approx. 9.1 and I always use 93 octane. I have never noticed any knocking or pinging.) Comp XFI268 Hydraulic Roller Cam DURATION: 218int./224exh. LIFT: .570int/.565exh (w/1.6) LSA: 113
COMP Hydraulic Roller Lifters/COMP OEM Style Installation Kit
COMP 1.6 High-Energy Die Cast Aluminum Roller Rocker Arms/Texas Speed Chromoly Pushrods RPC Mid-Length Headers/Flowmaster Y-Pipe/High-Flow Cat DynoMax Super Turbo 3in. Offset In/Out Muffler 17792/3in. Exhaust Tubing
K&N Air FIlter
Flex-Lite Dual Electric Fan Kit/Edelbrock Aluminum Water Pump/New Radiator/Underdrive Pully Kit
Wheels/Tires:
Front: Original OEM 16x7 General Grabber UHP 255/65R16
Rear: Original OEM 16x7 General Grabber UHP 255/65R16
I have also rebuilt/modified the suspension and brakes as well. I am quite happy with all I have done and the Tahoe is a blast to drive. The ProFlo 4 and AFR heads are amazing (there is a strong smell of gas when the engine is running that I haven't been able to pinpoint. The air fuel ratio and timing is perfect, perhaps it's the charcoal canister delete?). I just wonder if maybe a different combo would perform better for my purposes? What would you have done differently? I am welcoming all opinions and comments. Would a different cam or stall or gear ratio combo net me more acceleration on the street? I haven't had any dyno time but I do plan in the future to get a hub dyno session. Thanks!

 

[RDF1]

Can you try and lean it out at idle and see if that helps.
Ive never messed with that EFI system so not sure what all it has for options.
But Getting the compression up and going with a larger cam would be my advise. Especially since your already running 93 octane.
Didn't see Headers mentioned?

 

[arrg]

What does it not do now that you would like it to do after you throw more money at it? As for the fuel smell, where do you have your oxygen sensor? When I had mine in the driver's side header, I had the fuel smell problem, but when I moved it to the Y-pipe, most of it went away.

 

[Andrew Warfield]

What does it not do now that you would like it to do after you throw more money at it? As for the fuel smell, where do you have your oxygen sensor? When I had mine in the driver's side header, I had the fuel smell problem, but when I moved it to the Y-pipe, most of it went away.

My main question is what is your opinion of my cam/stall/gear ratio for my stated purposes? Is this the best combo for power and street drivability while not being concerned with mpg? What would you have done differently if anything?
The o2 sensor is located in the y-pipe, not the driver's side header collector. The gas smell is not too bad but it does smell rich. I have triple checked the air/fuel ratio and timing but that doesn't stop the smell. I will try the leaning out idea mentioned before, thanks!

 

[Andrew Warfield]

Can you try and lean it out at idle and see if that helps.
Ive never messed with that EFI system so not sure what all it has for options.
But Getting the compression up and going with a larger cam would be my advise. Especially since your already running 93 octane.
Didn't see Headers mentioned?

RPC mid-length headers. I really don't want to go with a larger cam. I feel this is the largest cam I want for drivability purposes. Same with compression. Thanks for the leaning out idea, I will try it

 

[arrg]

My main question is what is your opinion of my cam/stall/gear ratio for my stated purposes? Is this the best combo for power and street drivability while not being concerned with mpg? What would you have done differently if anything?
The o2 sensor is located in the y-pipe, not the driver's side header collector. The gas smell is not too bad but it does smell rich. I have triple checked the air/fuel ratio and timing but that doesn't stop the smell. I will try the leaning out idea mentioned before, thanks!

What do you have set for idle AFR and timing?

 

[PlayingWithTBI]

Do you have a Cat on it?

 

[RDF1]

RPC mid-length headers. I really don't want to go with a larger cam. I feel this is the largest cam I want for drivability purposes. Same with compression. Thanks for the leaning out idea, I will try it

It might sound odd, but you can try and richen it up also.
Ive tried leaning out a LS one time to kill the smell and it got worse. richened it up and it got alot better.

Also does it have a option of Injector timing?
If you can adjust when the injector fires where it hits a closed intake valve it will atomize and burn better plus kill the rich smell

 

[LC2NLS6]

What rpm are you shifting at? You have good heads, so it should run to 6000 easy with that cam I'd think. Get it dynoed and see what it does.

 

[Andrew Warfield]

Do you have a Cat on it?

I have a flowmaster universal high flow cat. Perhaps because it is a high flow there is a rich gas smell?