Originally Posted by oldslover
i have a 1970 429 with dove cylinder heads i want to build the engine as a stroker and put anywhere between 500-650hp out and still be able to run a 150-200 hp shot of nitrous on it but use my dove heads anybody got any ideas on what stroker kit i should use or how i should build it
Those heads were cast at a time when we could get Sunoco 260 at the pump and most of us needed it because all the hot factory motors were high compression, needing high octane to prevent detonation.
So it's 43 years later and they're still high-compression heads with no protection nowadays for the exhaust valves.......(no tetraethyl lead in the fuel today).
Most fellows today will bite the bullet and install hard inserts in the exhaust seats and be done with it. But that still leaves the rather small ~75cc chambers to deal with.
The fuel available today has limited us to about 9.5:1 static compression ratio using iron heads and about 10.5:1 static compression ratio using aluminum heads. You'll have to research a way for you to increase cubic inches and still find a piston that will end up at or below 9.5:1 SCR.
I looked around some and found a Keith Black Icon forged piston part number
IC854 that has a 39cc dish. This piston, combined with a 6.8" connecting rod and a 4.300" stroke crank and a ~75cc combustion chamber, will make a 9.6:1 static compression ratio. 4.390" bore and 4.300" stroke makes a 521 cubic inch motor.
Icon Forged Racing Pistons
This is the largest dish I found on ANY BBF piston.