I've not installed the cam yet so this is the procedure I'm going to use. I do hope this helps I'd hate for you to have a problem where you either valve make contact with the piston or the rocker arm falls off the stem and pushes on the valve spring and the locks fall out causing damage that was avoidable. then send the test push rods to the likes of Comp cams and they will either make you the length rods you need or if you have the ability to measure to the thousandth they just may have the rods in stock and can send you a set of 16. Now it you don't get the proper travel, Summit offers an Adjustable push rods (You only need 2) where you can make the adjustments and set the push rod length required. then looking to make sure I have the proper travel over the valve stem. (I & E ) Any cam shaft I've installed I've installed a push rods on one cylinder and rolled the engine over by hand. Using a die on the top (tip) of the valve stems. I am always surprised at how good a base 310hp setup is for the acceleration out of the hole and up to 36 mph, that is really a very good combination.I'm not going to be able to provide you with a solid answer. 474/.510 lift), some comp cams self-aligning roller tipped lifters that I already have (1.52 ratio), a TH350 with (perhaps) a little more stall, and 3.08 gears. Would be a straight drop in swap as external dimensions are the same. Here's what I'm thinking: the ZZ4 roller cam (208/221 duration. No question, a 383 would be nice, so if the lower end is needed certainly worth considering. Another option for more "cam" would be to simply swap to a set of 1.6 rockers, easy swap and lots of vendors offer them. This boat is used mainly for skiing and barefooting and the power curve is perfect for it. Makes a great barefoot combination and great short set up combination as 0-36 or 0-40 mph times are short.
#Zz4 roller cam 350 specs upgrade
Easy upgrade to do, you don't have to pull the engine, but you do need to twist it slightly for the cam swap (won't clear the pylon). The ZZ4 cam works great and does not negatively affect idle or roll on power which is very important for these boats, I would go that route. I also did a host of other mods, including aluminum exhaust manifolds, my own 4" exhaust system, cold air intake, timing and fuel calibration tweaks.
More power (added top end), as much if not just a bit more torque and I shed over 200# in the process with all the aluminum stuff. I did the fast burn head / ZZ4 cam swap and am very happy with the results. You're looking at the fuel injection, heads, cam, block, computer, etc. If you're looking to swap to a HH from a Monsoon it's much more than just a cam. Would love too, but don't want the extra weight.Īlso does the Hammerhead run Aluminum heads? The plan would be to swap the Monsoon intake, ETX exhaust manifolds on, fuel and wiring systems.Īlso does the Hammerhead run Aluminum heads? Edited Octoby CumminsBu Recommended spark plug: Accel #111-0526-4 or any spark plug with 14mm. High Silicon Aluminum Pistons w/Offset PinsĪluminum 62cc Fast Burn Chamber Cylinder Heads w/ 2.00'' Int./ 1.55'' Exh. Its forged steel crankshaft and forged PM connecting rods are proven to 500 horsepower.ģ85 ft/lbs TQ 4000 RPM (Max Recommended RPM: 5800) The Fast Burn is an excellent choice for the basis of a custom engine. The Fast Burn uses stamped steel 1.5 rocker arms and the same camshaft as the ZZ4, but these heads are hungry for more. This GM Performance engine uses the ZZ4 short block and adds to it the Fast Burn cylinder heads for 385 horsepower. High-Silicon Aluminum Pistons with Offset PinsĪluminum Angle Plug 58cc Cylinder Heads (1.94" Int/1.50" Exh valves) Get even more power with a ZZ4 Valvetrain Package.Ĥ05 ft/lbs TQ 3500 RPM (Max Recommended RPM: 5800)Ĭast Iron 4-Bolt Block with One-Piece Rear Main Seal your block casting number is a 1995-1999 350 for either a boat or a truck and has a 1 piece. The 350 crate engine of choice for many street rods, drag racers, and show cars, this aluminum 4-bolt small block gives a lot of bang for the buck starting with an undercut rolled/forged steel crankshaft, powdered metal connecting rods, and high-silicon aluminum pistons.
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