Headgasket for Kb399 and 302 Heads
Sorry for late response!! Life has been little crazy.
@rumblefish360 the flat part of the piston is basically zero deck at .005 in the hole. When I did the putty on the 302 heads with the dome of piston. There was plenty of room. closes thing was the spark plug. With the head bolted on and NO headgasket I got .188 clearance measuring the puddy from tip of spark plug to the dome.
I dont see a reason why that wont work. My concern at this point is valve lift. On intake with piston at TDC I got .353 when the valve hits piston. On exhaust I got about the same. Fyi these are stock valves in the 302 heads.
The cam I wanted to run is a hydraulic roller and I was going to use solid roller lifters. The cam has 468 lift on intake and 475 lift on exhaust with 1.5 ratio rockers. Duration at .050 is 230 on intake and 234 on exhaust. Valve timing events are as follows. Intake opens 7 btdc and closes 43 abdc. Exhaust open 45 bbdc and closes 9 atdc.
I'm far from a cam expert but I'm afraid there might be no room for that lift with these heads and the kb399 pistons. Sigh can someone more knowledgeable confirm that?
I know you guys like pics so I attached a bunch. Yes the bench in background is a mess
Sorry for late response!! Life has been little crazy.
@rumblefish360 the flat part of the piston is basically zero deck at .005 in the hole. When I did the putty on the 302 heads with the dome of piston. There was plenty of room. closes thing was the spark plug. With the head bolted on and NO headgasket I got .188 clearance measuring the puddy from tip of spark plug to the dome.
I dont see a reason why that wont work. My concern at this point is valve lift. On intake with piston at TDC I got .353 when the valve hits piston. On exhaust I got about the same. Fyi these are stock valves in the 302 heads.
The cam I wanted to run is a hydraulic roller and I was going to use solid roller lifters. The cam has 468 lift on intake and 475 lift on exhaust with 1.5 ratio rockers. Duration at .050 is 230 on intake and 234 on exhaust. Valve timing events are as follows. Intake opens 7 btdc and closes 43 abdc. Exhaust open 45 bbdc and closes 9 atdc.
I'm far from a cam expert but I'm afraid there might be no room for that lift with these heads and the kb399 pistons. Sigh can someone more knowledgeable confirm that?
I know you guys like pics so I attached a bunch. Yes the bench in background is a mess
