2007年3月10日 · This Chevrolet L98 TPI engine has its displacement stroked to 383 cubic inches and has stealth mods installed including a new cam and an extrude honed tuned port injection system to make 458 HP...

2006年7月12日 · Compared with its carbureted predecessor,the new-in-'85 L98 TPI motor not only offered superior peak power, butit also greatly reduced emissions, improved driveability, and--thanks toits long,...

The Key reason the the 88-92 L98 350 TPI motors made 245hp and the 93 LT1 made 275hp is that intake. heads flow practically identical numbers and the cam was almost as similar. Best intake for TPI in my opinion is the TPIS miniram. which is pretty much a …

We investigate whether the TPI intake or a carburetor is the better induction system for the L98 engine in your C4 Corvette - Vette Magazine

2021年12月31日 · I like the power curve and values given by the Extrude Hone port/polish of the factory TPI base, TPIS big tube runners, and the port matched plenum plus larger TPI throttle body. I also like the curve and numbers of the big runner complete TPIS system.

2010年4月23日 · IF your goal is to have a significant increase in torque, to match the stock rear gearing, and keep the basic low rpm torque and response of the stock tpi and don,t mind the engine nosing over on power as it runs out of air flow at about 4700rpm

2018年5月31日 · C4 Tech/Performance - L98 Tpi tuning and EPROM chip - Has anyone gotten into tuning their L98 themselves? I've heard there are after market EPROMs and compatible tuning software you can buy but I have yet to find much information on it. I plan on doing a lot of performance upgrades such as comp valve springs and valve...

2015年9月21日 · For dyno purposes, the stroker was first topped with the stock L98 TPI set up. We took the liberty of replacing the stock injectors with 50-pounders from Holley and the system was tuned to perfection using a FAST XFI management system.

2022年7月29日 · The L98 was the new designation for the updated 350 cubic-inch engine. During its lifetime, this engine underwent minor modifications to tweak its horsepower. The Tuned Port Injection (TPI) improved 350 small-block’s fuel economy and performance.

2024年2月18日 · – Fuel Injection: The L98 engine was one of the first Chevy engines to feature Tuned Port Fuel Injection (TPI). This fuel injection system improved fuel efficiency and power output compared to carbureted engines. – Horsepower and Torque: The L98 engine produced around 230 horsepower and 330 lb-ft of torque.