How do I identify 350 Vortec heads?

Vortec heads have the “sawtooth” pattern casting mark on the end of the heads. The bowl area is wide around the valve guide – much wider than the old GM cast iron ‘camel-hump’ heads. The intake and exhaust valves and valve seats have a three-angle grind from the factory.

What year 350 has Vortec heads?

The Debut. From 1996 to 2000, GM truck and van 350 engines came equipped with L-31 Vortec cylinder heads.

What is the difference between a 350 and 350 Vortec?

The regular 350 head uses a 90 degree bolt angle while the Vortec uses a 72 degree bolt angle. When the head is bolted to the engine, all the attachment bolts point straight up, as experienced mechanics know.

How much lift can stock Vortec heads handle?

around 0.420 inch
The factory Vortec heads use a light, single-wire valvespring with a damper that generates between 70 and 80 pounds of load on the seat. Because these heads are meant to work with a 1.5:1 rocker, their tall valve guides can only handle maximum valve lifts of around 0.420 inch.

How much horsepower do Vortec heads add to a 350?

Jeff Smith: We wrote about Vortec heads in 2016, and that article spawned this question. 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.

How much horsepower does a 1999 5.7 Vortec have?

5.7 Vortec Transmissions It is rated at 255 horsepower at 4600 rpm and 330 foot-pounds (lb-ft) of torque at 2800 rpm.

How much horsepower does a 1998 5.7 Vortec have?

What is the max lift on Vortec heads?

How much horsepower does a 350 with Vortec heads?

around 350 hp
Cam And ValvetrainAs good as the Vortec heads are for a production-based head, they still poop out at around 350 hp.

What size valves are in Vortec heads?

1.94/1.50-inch
These production Vortec heads were used in the new Vortec 350ci engine intended for -, -, and 1-ton Chevy pickups. Amazingly, this mundane, production-based 1.94/1.50-inch valve head performed better than the iron Bow Tie head.

Whats better 5.3 or 5.7 Vortec?

IMO-The 5.3 is definately a faster motor but the 5.7 seems to handle weight better. My 5.3 averages about 17mpg while and I got about 15mpg with my 5.7. It is hard to get a good comparison though. The 5.7 was a Z71 regular cab, short bed with an auto and 3.73s.

Where can I buy a Chevy 350 cylinder head?

Clearwater Cylinder Head Inc. (CCH) is a reputable, experienced (over 25 years) dealer. We specialize in providing quality and warranty-backed rebuilt cylinder heads for a variety of vehicles (cars, trucks, boats, etc). With a massive online catalog, you can easily view our inventory of Chevy 350 cylinder heads.

Can a cracked head on a Chevy 350 engine be repaired?

Therefore, with cracked cylinder heads, your engine will experience a substantial loss of power and the harmful mixing of antifreeze and engine oil. At worst, it results in a severely damaged engine that requires replacement. Repairing a worn down Chevy 350’s cylinder heads would not break your bank, therefore don’t give up on your engine.

How much horsepower does a Chevy 350 have?

As a small and light engine, Chevy 350 put out horsepower ranges from 145 to even more than 370. Chevy 350’s outstanding performance is what has made it stand the test of time.

When did the Chevy 350 become a muscle car?

However, GM was not officially made a standard-bearer in the industry until 12 years later, in 1967, when the Chevy 350 was born. The small-block Chevy 350 gained its reputation as a powerhouse designated for muscle cars in no time.