Question: Are Vortec Heads Better Than Double Hump Heads?

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 much horsepower will Edelbrock heads add?

After installing the Edelbrock Performer heads, the 302 blasted out 383 hp and 364 lb-ft of torque, for a gain of 78 hp peak to peak. Near 6,000 rpm, the difference in power was an astonishing 92 hp. The name Edelbrock conjures up all manner of performance components, and for good reason.

What are camel humps for?

A camel’s hump does not hold water at all – it actually stores fat. The camel uses it as nourishment when food is scarce. If a camel uses the fat inside the hump, the hump will become limp and droop down. … The hump is not used for water storage, but camels can go for long periods of time without water.

How much horsepower do Vortec heads add?

The original answer was related to modifying the heads to accept more valve lift. Our original answer combined the Chevrolet Hot cam with a set of these Vortec heads. Our estimate then and now is around 350-375 horsepower. Your question relates to porting the Vortec heads to improve the flow, which is a great idea.

How much horsepower can you get out of a 327?

Rated at 375 hp, the fuel-injected 327 was a high-winding screamer, as satisfying to drive as any big-block. At the other end of the spectrum, the 327 was also offered at much more pedestrian power levels, as low as 210 hp (gross).

Are 882 Chevy heads any good?

GM 882 Iron The smallest of the GM heads we tested at only 151 cc, the 882, turned out to be the best-flowing of the early iron heads. This head was tested with the 1.94/1.50 valves. … If you are into these heads, the best way to find a good one is to flow-test several. But in most cases, that’s impractical.

Does porting heads lower compression?

In general, head porting does not affect compression. Porting the head usually means enlarging the intake and exhaust runners, that’s it. However, some porters “work” the combustion chamber, removing material for whatever reason. This will lower the compression.

How can you tell if a 350 head is a Vortec?

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 are double hump Chevy heads?

These heads got their nickname because of the raised identification shape on the each end. It’s two half-ovals connected by a straight bar-most easily described as “two humps.” Some of these are also nicknamed “Fuelie” heads because a version appeared on fuel-injected 327-powered Chevy Corvettes.

Will Vortec heads work on older 350?

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

What makes Vortec heads so good?

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.

What are the best small block Chevy heads?

Peak Torque and HorsepowerCylinder HeadPeak HorsepowerPeak TorqueEdelbrock395 at 5,900 rpm409 at 4,200 rpm (5)Speedway381 at 5,400 rpm409 at 4,200 rpm (5)Vortec378 at 5,300 rpm408 at 4,300 rpm (7)Stock Iron358 at 5,800 rpm379 at 4,300 rpm (8)4 more rows•Jul 12, 2012

Are camel hump heads good?

Any camel hump head is a candidate for a street engine build. But the key is what you have to spend to make them useable. A lot of them are cracked in the exhaust seat area. If you find a set of original stock heads, you’ll need a valve job, exhaust seats, valve guides – maybe screw in studs/guide plates.

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 do I identify my SBC heads?

The most recognized end casting identifier of the SBC heads is the “fuelie”, “double hump”, or “camel hump”. It got the name fuelie from the fact that it was used on optional high performance fuel injected SBC engines, mainly installed in the Corvette.

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.

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.

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 much horsepower do heads add?

Porting the heads will definitely help airflow. You will gain 25 HP over the stock setup.

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.