Are L98 heads any good?

Are L98 heads any good?

The L98 heads don’t hold up to modern cylinder head designs, but they aren’t a terrible cylinder head. Some port work and upgraded valves can make them perform solidly. Really, it depends on what motor they are going on.

Will TPI fit TBI heads?

they’ll work fine with a TBI intake assuming same bolt pattern.

Can you put Vortec heads on a TBI motor?

The heads will bolt to the block fine but you will need a specific intake manifold. Either the gm TBI/vortec intake or a vortec intake for carbs and use an adapter for the tbi. If you use the carb intake you will loose the EGR. You can keep it with the gm intake.

How much horsepower can you get out of a TBI 350?

The 350 TBIs only flow like 475 cfm, but can be bored to flow ~650 cfm. The bored TBI with the bigger injectors (96 lbs), the right chip, and a bumped up fuel pump (20 psi), should be able to support 345 hp (according to John’s calculations).

How can I get more horsepower out of my L98?

According to Myron, with these modifications you can have an L98 with about the same horsepower as a C5 for considerably less cash….You Can Spruce Up Your L98 With The Right Parts

1. Tune It Up.
2. Fuel Pressure.
3. Porting & Air Flow.
4. Computer Tuning.
5. Throttle-Body Openings.
6. Exhaust.
7. Ingnition Module.
8. Cam & Intake.

How do I get more power out of my L98?

How to Get More Horsepower Out of a Corvette L98

1. Remove the factory Chevrolet air intake system and install a performance-oriented aftermarket cold air intake system in its place.
2. Remove the factory Chevrolet exhaust system and install a performance-oriented aftermarket exhaust system in its place.

What is the biggest cam for stock 350 TBI?

COMP Cams CL12-600-4 is the biggest cam for stock 350 and plays its role as the topper since 1976. This Chevy cam increases horsepower along with torque performance.

Is a TBI 350 a Vortec?

GM’s first-generation Vortec engine was derived from its fuel-injected predecessor, the throttle-body fuel injection (TBI). Both the TBI and Vortec engines used only two injectors to supply fuel to the 350ci V-8. The first-generation Vortec was GM’s early attempt at an inexpensive port injection system.

How can I make my 5.7 TBI faster?

How to Get More Horsepower for the 1994 GMC 5.7 Liter TBI

1. Fill up your vehicle with high octane fuel rated above 90 octane.
2. Add fuel injector or carburetor cleaner to your vehicle’s gas tank every 3,000 miles.
3. Install a cold air intake on your vehicle’s air intake manifold.

Which is better TBI or carb?

Compared to a carburetor, a bolt-on TBI system is like night and day. For one thing, fuel injection depends much less on intake vacuum than a carburetor. The engine will run smoother, idle better, start easier and provide better throttle response and cold driveability with TBI than a carburetor.

How much HP can you get out of a L98?

The L98 engine was the standard engine option on Chevrolet (or Chevy) Corvettes produced from 1985 to 1991. It was a small-block aluminum V8 engine which produced 230 horsepower and 330 lb-ft of torque.

How much HP can a L98 handle?

They can handle about 800 hp and 7000 rpm in boosted applications (at least for a while).

How many CC are in a TBI 5.7 V8 head?

Typically they are 64 cc on the 5.7 v8 heads for either the TBI or TPI 5.7 v8 iron heads. The chamber shapes are the same on both. Re: 193 heads?? hwp wrote:

What kind of plugs do I need for a TBI?

R44TS for stock iron heads that use .500 reach plugs or R44LTS for .750 reach plugs for vortec heads and aluminum heads. Some of the aftermarket iron heads take the .750 reach plugs now so check that out when you order your heads. 4. The cam in the TBI engine is just plain AWFUL.

Can a TBI head out perform a Vortec?

Stock TBI heads actually out perform stock Vortecs to about 3000 – 3500 rpms. BLASPHEME??? No, simple truth. Go ahead and blend the bowls as much as you can and clean up the runners. Aftermarket chip, headers will help a lot! I’d like to see the data to support the TBI heads outflowing a Vortec at any thing beyond idle.

What should the lift be on a TBI head?

They are definitely sub-5000 RPM heads. The lift is limited to about .450″ before the retainers hit the guide seals, so you’ll be OK in that respect. About the only thing you can do is measure them.