Will Vortec Heads Fit A 350?

Is the 350 Vortec a good engine?

The best-known and most-beloved has to be the “350” or 5.7-liter version; especially with Chevrolet and GMC trucks.

They are powerful, tough, reliable and it is relatively easy to “soup up” or increase their performance..

What is so special about a Vortec engine?

The redesigned cylinder heads of a Vortec engine provides for improved combustion efficiency. The intake ports (reshaped) of the engine provides for better cylinder filling and fuel atomization by promoting higher air flow velocities to the combustion chambers via the ports.

How long do Vortec engines last?

Re: Chevy Vortec Engine longevity I know that 6.0L Vortec’s are renowned for going well beyond 300,000 without any major issues.

Are Vortec heads worth it?

vortec heads are one of the cheapest hp gain and they’ll give you better gas mileage. For the center bolt valve covers the ones for the vortec heads are taller then the center bolt valve covers you find on non-vortec heads.

What vehicles have Vortec heads?

Re: Which vehicles came with Vortec heads? ( 96 thru 99 Chevy and GMC pickups, Suburbans, Tahoe, and Blazers. There were two types of Vortec heads, small heads were used on the small V-8 truck engine, the larger L31 heads were used on all 5.7 V-8s. The ones you want are L31, 5.7 heads.

What is the difference between a Vortec 350 and a regular 350?

The Vortec combustion chamber is a kidney-shaped design that promotes better combustion and will have the spark plug located near the center of the chamber. The regular 350 head utilizes a 90 degree intake bolt angle while the Vortec makes do with a 72 degree bolt angle.

What is the difference between Vortec heads and regular heads?

The Vortec heads are a little bit lighter than the older heads and have a “kidney” or “heart” shaped combustion chamber that is more efficient than the double hump chamber. The L31 Vortec comes in two different casting numbers, 10239906 (#906) or 12558062 (#062).

What year is the best Chevy 350 engine?

L31 (2002) From a purely technical standpoint, the most recent version of the Chevy 350 would naturally be the best of the bunch. Marketed as the “Vortec 5700” engine, but known internally by the moniker of L31, this engine was used primarily in GM vans and trucks until 2002.

How many hours will a 5.3 Vortec last?

Re: Engine hours Idling the engine is running around half the speed of the engine compared to going down the highway. I would say it’s probably comparable to a truck with around 3500-4000 hours on it.

Will 327 heads fit on a 350?

They are perfect for a 350. Both the 327 and the 350 have a 4″ bore so they like the same heads. Old heads like that will have softer valve seats, so if you want them to last a long time, you should either replace the seats or run leaded gas in the engine.

How much HP can Vortec heads make?

GM Vortec cylinder heads are used with a Comp Cams Xtreme Energy 262° camshaft to produce 390 HP and 426 ft-lbs of torque. These numbers are made with 87 octane, while most of the combos on my site used 92 or 93 octane gasoline.

Will a TBI intake fit on Vortec heads?

If you wanted the Vortec heads on your engine then you would have to buy a new intake manifold to be able to get the TBI set-up onto the heads. … But you would need to buy a TBI intake manifold to bolt up to the Vortec heads. You can’t by a spacer for the Vortec intake manifold.