What are 202 heads?
“202” refers to the intake valve diameter of 2.02″. Fords and Chevys usually don’t have an intake problem… they usually have an exhaust problem.
Where are GM head casting numbers?
The casting number of a GM cylinder head is located between the valve springs. It’s a long number of 6 to 8 digits.
How do I identify Chevy Cylinder 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.
What CC are camel hump heads?
Even older is the troglodyte-like 64-cc chamber heads, often referred to as “double hump” or “camel hump” heads because of their distinctive casting marks on the ends of the heads.
What are double hump heads worth?
RIP: 2/16/2019. 461 and 462 double hump complete heads should be worth or priced at $200 a set at the very least. With all the choices in new motors and heads these do not have the interest they once had.
How much horsepower does double hump heads add?
Stock “double hump” heads flow 202 cfm intake and 141 cfm on the exhaust. If you must maintain a stock looking port, consider our “Undercover Porting”. With our “Undercover Ported” they will flow 220-230 cfm intake and 165 cfm exhaust. This flow improvement will add 15 to 25 horsepower to your engine.
What are 882 Chevy heads?
882 heads were designed by Chevy to be used in 350 ci and 400 ci engines. The reason that the earlier iterations of this engine cracked was due to the fact that they ran really hot. This was due to the double heat riser passage. The 882s are quite similar to 84-86E 462624 heads.
Are all SBC heads interchangeable?
One thing to keep in mind, the Gen-1 and LT-specific heads are not easily interchangeable. Each will physically bolt up to the other engine, but the water passages don’t line up. The exhaust ports and exhaust manifold-bolt holes are in the same location.
Are Chevy 882 heads good?
882s could be called the best of the worst. The catch with performance engines is you can usually find ready to run, used aftermarket heads for $450-500. Granted, they’ll be small, like a performer or dart iron eagle 180, but still offer significant improvement over a stock head.
What heads came on 327 Chevy?
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. These heads appeared on 327 and 350 cubic inch engines across most of the 1960s (beginning in 1962).
What are bowtie heads?
Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. These upgraded production cylinder heads are ideal for 400-450 horsepower street and racing (great for circle track applications) engines.
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.
What is the casting block number for head casting?
BLOCK CASTING NUMBER HEAD CASTING NUMBER CRANK CASTING NUMBER 1989-91 122 2.0 3.346 L-4 OHC, M.F.I.,
What is the difference between aluminium heads and cast iron heads?
Aluminum heads use a valveseat insert into the head; cast-iron heads typically grind the valveseat directly into the casting, but seat inserts can be used for repair purposes. One of the secrets to a valve job with any valve insert is to create a smooth transition from the port to the valve job and into the chamber.
What is the difference between 340 heads and 308 heads?
Both heads had the same open combustion chamber as the other 340/360 heads and the same 1.88/1.60 valve sizes. Mopar Performance created an offset pushrod version to duplicate the 340 T/A heads, but it wasn’t very popular. The 308/576 cast-iron head was quite popular for about 10 years when production stopped.
What is the difference between Edelbrock 340 and 360 heads?
Caution: ARP lists the same head bolts for Edelbrock heads as for the W2, which means two extra-long head bolts (a typical 340 or 360 has five long and no extra-long). Edelbrock also has an aluminum head for race only, which features a 58-cc chamber and a larger 225-cc intake port. The ports are fully CNC-ported and use 16-degree valve angles.