How do I identify a 461x head?

The heads are quite easy to identify, as they sport an “X” underneath the #1 or #8 exhaust runner. This particular set has been stored by the seller for over 30 years as backups for his race engine. They’re in fantastic shape, with no signs of porting or gasket matching.

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 461 Chevy heads good?

The 461 heads were THE heads to have in the days prior to the aftermarket heads. They are good if you want to run a class where stock heads are required. With the advancements in casting and air flow research these heads have been eclipsed in today’s world. This aside, they are decent heads and still do a good job.

What did 461 heads come on?

The 461 head is more popularly referred to as the “Fuelie” head, because it was introduced as standard equipment on the 1962 327ci Corvette engine that was fed by a mechanical Rochester fuel-injection system. In some bench-racing circles, all double-hump heads are classified as Fuelie heads.

How much HP can you get out of a 327?

Despite being down on inches to the 350, the 327 Chevy still lays claim to the most powerful production conventional small-block ever produced, the L84. Rated at 375 hp, the fuel-injected 327 was a high-winding screamer, as satisfying to drive as any big-block.

Are Vortec heads better than double hump 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 do I identify Chevy heads?

Chevy heads have often been identified by sight and most commonly by the different casting shapes on the ends of the cylinder heads. While these casting marks cannot tell specifics about the cylinder heads, they can help identify a performance head from a non-performance head.

Are 041 heads good?

Registered. These heads have a triangle casting mark (not the double hump). They are not the best flowing (not bad though), but can be pocket ported at home very easily. These heads are a replacement for the 186 castings.

How much power can you get out of a 327?

Is a 327 and 350 block the same?

Re: 327 block same as 350?? Yes, the first 327 was a small journal engine up until mid 67, when they made the big journal crank. The 307 and 350 were all big journal. Even the mains were smaller on the small journal engine, so the big journal crank will not fit in the small journal block.

What kind of cylinder head does a Chevy 461 have?

Today in the shop we’re learning about our new aluminum double hump cylinder heads for the small block Chevy V8. Wyatt and Joe compare them with the original GM 461 casting or “fuelie heads” that debuted on the 1961 Corvette with Rochester fuel injection.

How many CC’s are in a GM 461x casting?

I don’t know about accuracy as I think I am third hand, but… Intake rwmers should be right around 161 CC’s, and exhaust right around 62 CC’s (unless they were the 461X casting, then they were about 172 CC’s intake, and about 64 CC’s exhaust). .

What should flow numbers be for GM 461 hump heads?

Intake rwmers should be right around 161 CC’s, and exhaust right around 62 CC’s (unless they were the 461X casting, then they were about 172 CC’s intake, and about 64 CC’s exhaust). . I did read one test on flow #’s for a 461 (stock, untouched), the #’s were as follows:

Which is the fourth part of the value chain?

Marketing and sales are the fourth part of the value chain and include all strategies to enhance the visibility of the product, satisfy consumer needs with the product, and facilitate the sale of the product. Activities include channel selection, advertising, and pricing.