Image 1 of 1
Image 1 of 1
Image 1 of 1
Image 1 of 1
How to Make Power, Improve Mileage & Build a Better 350 Chevy
A real-world guide to getting more from GM's throttle-body-injected 5.7L/350 small-block.
Written from years of hands-on experience modifying, tuning, driving, and troubleshooting GM TBI engines, this guide cuts through the random parts-swapping and internet myths. It covers the areas that actually matter: airflow, TBI modifications, cylinder heads, camshafts, exhaust, fuel pressure, injectors, computer tuning, ignition, cooling, electric fans, gearing, overdrive, torque converters, and fuel mileage.
You'll learn where the factory 5.7 TBI combination is restricted, which modifications work together, which ones don't, and where I wouldn't waste the money.
This isn't a factory service manual or a collection of generic horsepower claims. It's the practical stuff I learned the hard way, including historical parts and specifications that can still be useful when working on these engines today.
Inside you'll find:
GM 5.7/350 TBI airflow and power limitations
The Ultimate TBI throttle-body modifications
TBI vs. Vortec cylinder heads
Choosing the right cam and powerband
Why the Y-pipe matters before you buy headers
Fuel pumps, injectors and fuel pressure
Custom chips and TBI tuning
Ignition upgrades
Electric fan conversions
Real-world fuel-mileage improvements
Gearing, overdrive and torque converters
What not to waste your money on
A practical step-by-step 350 TBI build strategy
Historical part numbers and reference information
Built for the person who still owns one of these trucks, SUVs, or cars and wants to make the 5.7 TBI work better without throwing money at every shiny part that comes along.
Current parts, replacement numbers, tools, and additional resources are available through the Bigfoot Trails Basecamp Resources page.
How to Make Power, Improve Mileage & Build a Better 350 Chevy
A real-world guide to getting more from GM's throttle-body-injected 5.7L/350 small-block.
Written from years of hands-on experience modifying, tuning, driving, and troubleshooting GM TBI engines, this guide cuts through the random parts-swapping and internet myths. It covers the areas that actually matter: airflow, TBI modifications, cylinder heads, camshafts, exhaust, fuel pressure, injectors, computer tuning, ignition, cooling, electric fans, gearing, overdrive, torque converters, and fuel mileage.
You'll learn where the factory 5.7 TBI combination is restricted, which modifications work together, which ones don't, and where I wouldn't waste the money.
This isn't a factory service manual or a collection of generic horsepower claims. It's the practical stuff I learned the hard way, including historical parts and specifications that can still be useful when working on these engines today.
Inside you'll find:
GM 5.7/350 TBI airflow and power limitations
The Ultimate TBI throttle-body modifications
TBI vs. Vortec cylinder heads
Choosing the right cam and powerband
Why the Y-pipe matters before you buy headers
Fuel pumps, injectors and fuel pressure
Custom chips and TBI tuning
Ignition upgrades
Electric fan conversions
Real-world fuel-mileage improvements
Gearing, overdrive and torque converters
What not to waste your money on
A practical step-by-step 350 TBI build strategy
Historical part numbers and reference information
Built for the person who still owns one of these trucks, SUVs, or cars and wants to make the 5.7 TBI work better without throwing money at every shiny part that comes along.
Current parts, replacement numbers, tools, and additional resources are available through the Bigfoot Trails Basecamp Resources page.