Question: Why Are Vortec Heads Better?

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.

The non-vortec head center bolt valve cover with not fit on a vortec head..

Is there a 327 4 bolt main?

They never made a 327 4 bolt main block. You can make one with a large journal 327 crank in a 4 bolt 350 block due to the same bore that they have.

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.

Can you put 400 heads on a 350?

The only difference is that 400 heads have steam holes drilled in them for the 400 block. You can put 400 heads on a 350 but you should not put 350 heads on a 400 without drilling the steam holes.

Are Vortec heads 23 degree?

Similar in outward appearance to familiar 23-degree heads, the new Vortec Bow-Tie promises to deliver the performance equivalent of a comparable aluminum cylinder head.

How much HP can a 5.3 LS make?

The normally aspirated 5.3L eventually produced 503 hp at 6,600 rpm and 441 lb-ft of torque at 5,700 rpm. The new heads, cam, and intake shifted the power curve higher in the rev range, as a stock 5.3L will produce peak power at just 5,400 rpm.

How much horsepower do headers add to a 350?

The length of the primary tubing determines the effective rpm range, but headers can be worth 15-20 hp on the right application. Run on our restrictive two-barrel 350, the headers improved the power output to 248 hp and 365 lb-ft of torque, with consistent gains through the rev range.

How much horsepower does a cam add to a 350?

Say you put that Edlebrock Performer intake on your engine with the stock cam and you will pick up about 15 hp, over stock, however, if you put that same intake and carb on your new cam, you could pick up 20 hp from 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.

What cars 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.

Are Vortec heads better than double hump heads?

The L31 Vortec heads have larger ports than the older Gen I cast steel heads, so they outflow the older 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.

How much horsepower does a Vortec 350 make?

195 horsepowerChevy 350 Crate Engines The base version of this engine makes 195 horsepower and features an 8.5 compression ratio. These engines are available in 2-bolt and 4-bolt versions; those intended for cars built after 1987 have an enhanced hydraulic roller lifter camshaft for better performance.

How do you tell if you have Vortec heads?

The easiest way to identify a Vortec head is by the sawtooth pattern cast into the front. Look for casting number 12558062, but avoid casting number 10239906, which has a modified exhaust seat and loses 20 percent of its flow at 0.120-inch lift.

What is the difference between Vortec heads and regular heads?

Vortec Means Power Vortec heads instantly added 55 or more horsepower to a regular 350 head with the same displacement. … It is hard to tell the two cylinder heads apart when it comes to the physical aspect of the build, but there are major differences that make Vortec heads more powerful and efficient.

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.

What’s the difference between 906 and 062 Vortec heads?

The only difference between the #062 and #906 Vortec head is in the exhaust seat of the HD/1-ton truck #906 version, as described above. The #062 has a 3-angle grind on a standard induction-hardened seat, as does the non-HD #906 head.

Will Vortec heads work on older 350?

Yes the 1996-02 L31 350 vortec heads will bolt to ANY gen 1 350 engine.

Is the 5.7 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.

How much horsepower does double hump heads add?

“Double-hump” heads were found on many of its high-performance engines in the 1960s and early 1970s. They were manufactured with larger intake and exhaust port volumes and valves for the period, and engines equipped with them had output ratings of more than 350 horsepower.

Are 906 Vortec heads good?

the better of the 2 are the 906 casting heads because they have like 20% better flow over the 062 heads. 062 heads come of the 3/4 ton trucks. So you have the lower flowing vortec head but hey man be happy you have vortec heads man those heads work wonders. But all in all 062 is less flow and 906 is high flow.

Are Vortec heads angle plug?

Fred Mertz said: My vortec heads have angled plugs. I have no problems with the wires.