I think your O2 sensor is too far back. I put mine a little too close in my header collector. Otherwise, I don't see anything glaringly wrong with your combination.
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
I don't know if your EFI has the capability, or table, where you can adjust the delay to compensate for the position of your O2 sensor. Usually if it's off you'll get stumbling because the ECM is adjusting to soon or late based on O2 feedback. Here's the table in the EBL. It's based on Gms/Sec.I think your O2 sensor is too far back. I put mine a little too close in my header collector.
My main concern is the cam, stall, ring and pinon ratio combination
"VIN K" stock replacement engine. Functionally the same as the original engine. Dished pistons, too deep "in the hole". Low compression. Crying out for thin head gaskets.GM 350 Crate Engine Long Block #12568758
I don't know this company or their products.FTI Lock-Up Torque Converter (ESR3082): 9.5in./2800-3000RPM
4.56 seems excessively deep; but that'll depend on your tire diameter.Richmond 4.56 Gears
Good luck. MSD quality has taken a nose-dive; and their Street Fire line was always imported from Asia.MSD Street Fire Ignition Box
WHY are you using premium fuel in a nothing-to-one compression engine? This is crazy. You might actually get more power from lower octane. Won't be much of a difference, but it's possible. And less expensive.AFR 180 Fully Assembled Cylinder Heads (0918) 65cc Combustion Chamber... ... (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.)
Nice, mild specs yet still far "bigger" than the original cam.Comp XFI268 Hydraulic Roller Cam DURATION: 218int./224exh. LIFT: .570int/.565exh (w/1.6) LSA: 113
Die-cast arms? Kinda scary.COMP 1.6 High-Energy Die Cast Aluminum Roller Rocker Arms
New catalyst, and the exhaust still smells "rich"?High-Flow Cat
That's some serious downgrading of the cooling system.Flex-Lite Dual Electric Fan Kit/Edelbrock Aluminum Water Pump/New Radiator/Underdrive Pully Kit
Axle ratio is too deep. You've got a mild engine with low compression ratio. It's not set up for high-rpm power, but you've got small-ish tires, deep gears, and higher stall speed. You're throwing away any low-rpm power, and not fully using midrange power. But, sure, it'll make the engine seem peppy.Front: Original OEM 16x7 General Grabber UHP 255/65R16
Rear: Original OEM 16x7 General Grabber UHP 255/65R16
1. Define "perfect" A/F, and "perfect" timing.(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,
WHY would you do that???perhaps it's the charcoal canister delete?).