How much HP can camel hump heads make?
“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 are power pack heads?
The Power Pack heads are just a higher compression variant of the standard 2-barrel heads, nothing more. The higher compression along with a 4-barrel carb and dual exhaust made the added power (220 HP) over the lower-compression 2-barrel engine with a single exhaust (185 HP).
How much power can Vortec heads make?
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 do I know if my Chevy has double hump heads?
The term “double-hump” originated from the shape of the casting symbol (identifier) at the end of the heads. The best way to properly identify cylinder heads is to cross-reference the casting numbers and casting dates.
What are 041 heads?
The “041” head was a 1969-1970 high performance head, with the same exact performance characteristics as both the “186” and “187” Camel (double) Hump heads. It also is a 64 cc combustion chamber. It was available from the factor with both 1.94/1.5 and 2.02/1.6 valves, just depended upon which vehicle GM put them in.
What’s the difference between Chevy 461 double hump cylinder heads?
Also note how the spark plug on the aluminum head is closer to the center of the chamber and nearer to the exhaust valve, which improves the flame front across the cylinder. These heads have 2.02″ intake and 1.60″ exhaust valves, whereas most 461 heads came with a 1.94″ intake and 1.50″ exhaust valve.
What was the original Chevy 461 cylinder head called?
Wyatt: “What we have here is an original GM 461 casting. These are often referred to as the ‘fuelie head’. These debuted on the ‘61 Corvette with the Rochester fuel injection, so that’s why they’re called ‘fuelie heads’.
What was the first Corvette double hump called?
These are often referred to as the ‘fuelie head’. These debuted on the ‘61 Corvette with the Rochester fuel injection, so that’s why they’re called ‘fuelie heads’. This is the first iteration of GM’s double hump cylinder heads. There are many different versions of those.
How much horsepower does a double hump head add?
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. We may be the only company around with CNC programs for the “double hump” heads.