I have the lt4 hot cam, ran it all last year with no issues. I'll post results as I move through the install. Go to the marine cam.the truck cam doesn't like to run much past 4000 RPM. I was advised against the LT4 for marine use due to the probability of water reversion even with through hull exhaust.Īnother benefit of the Comp Roller was that it has the Fuel Pump lobe on it in case you elect to run a Mechanical Fuel Pump.ĭon't forget to put brass freeze plugs in.the steel plugs will not make a season in salt water and maybe 2~3 if you are lucky in fresh. These engines will run most of the time in the 3000~4500 rpm range. The valves are stainless with a 3: angle valve job.nothing exotic.
The heads are stock Vortec with Comp springs and retainers, port matching and mild cleaning of burrs in the intake passages. Ignition is Delco Voayger with 32 deg total advance. These numbers were attained running a Holley 750 CFM Marine Double Pumper on an Edelbrock Volvo/Penta High Rise/Dual Plane Marine aluminum intake with brass lined water passages. These engines were run in on the dyno and made 365 horse power at 5000 RPM.390 horsepower at 5600 RPM. I will get the cam cards out and post the numbers. I went instead with a Comp Cams Extreme Marine Roller with Comp Needle Bearing rockers. Thanks.I just bought a pair of 355 Marine Vortecs for my 255 Formula and considered the LT4 cam. Has anyone done this? If so, what was the result? I am thinking of repacing the stock truck roller cam with an LT4 Hot Cam. I have a longer term plan to build a 383 stroker, but in the interim I have picked up a solid 元1 Vortec 350 from a 20 Van - I am going to clean it up and do marine gaskets in it.
0 kommentar(er)
