Posted by PARTSMASTER on December 29, 1998 at 22:55:28:
In Reply to: Performance Potential of #10114156 Big Block Heads posted by SteveM. on December 28, 1998 at 14:47:06:
: I've got a Gen VI 454 (casting# 10237297), with a set of casting# 10114156 heads(round port, 2.07/1.72 valves, the same heads as the 502 "Tow Truck" engine)in my Jet Boat. First, can anyone tell whether this is a 4 bolt block or not? Second, is there any performance potential in these heads, or should I just give up and buy some high-po heads? The desired max rpm is 5000-5200. It's got a 750 Holley, and factory cast iron low rise intake. What is the best intake to use, based on the round intake ports, and are there any recommended cams for this combo. I haven't been able to find much info. on this engine, but I know that someone here has the knowledge.
This is a 4 bolt main block. The heads are low performance heads made for low speed RPM and torque. Ths engine can be upgraded in many ways heads ,intake , camshaft, Don't forget it must fit what you want your boat to perform at.Your exhaust is a factor also.Is the boat a closed or open cooling system.