Need help, advice with my 318 build
Thanks for all the opinions and guidance it really helps. I want to make the engine, trans, gearing and suspension work together well. My goal isn't really to make that 275 - 300 hp my goal is more to make we say that I'm going to have 250 hp at the crank. That those 250 hp is utilized and dialed in so I have a very efficient power band for my driving style.
If I play with the numbers and say that my 250 hp is reached at 4500 rpm. Then building the same engine with but with some more porting and higher lift and duration cam and we got 300 hp at 5500-6000 rpm. That 300 hp engine maybe have ~250 hp at 4500 rpm also but missing a whole lot from idle to 1500 rpm. I will probably seldom rev as high as 4500 + rpm so that 300 hp at 5500-6000 rpm will probably never be utilized for my driving style and if I doesn't change rear gearing It will probably be a slower from the line compared to the 250 hp engine with same gearing. So that's how I think and why I want to stay around that cam duration so I dont need to sacrifice to much low end power and mpg. But I will say that Lunati Voodoo 10200700 cam sounds very interesting. But since I live in Sweden and already have the cam I'm going to run it to see how it turns out but in the future a cam change feels possible. Those other cam also sounds good. I feel I need to test and see how my way of thinking and building this engine turns out before I decide to change cam.
I have a header flange that I'm going to build my own "Hedman tight tubes" on. They are laser cut from 0.472 inch steel (12mm) so they are thick and sturdy which I think is good? They got the "connected strips of steel" on the "wrong" upper side they need to be at the bottom so I can change spark plugs. But going to build the headers first then weld in new strips of steel at the bottom and then cut the upper ones.
But back to porting my exhaust side, if you look in the picture I have done very minor work at this side of port since I didn't have any gaskets to guide me to grind away any material. But now I got this header flange from a friend so now I have something to grind away to match against. Is it worth and good for the flow to take away all the material so I match the header flange?
Thanks for all the opinions and guidance it really helps. I want to make the engine, trans, gearing and suspension work together well. My goal isn't really to make that 275 - 300 hp my goal is more to make we say that I'm going to have 250 hp at the crank. That those 250 hp is utilized and dialed in so I have a very efficient power band for my driving style.
If I play with the numbers and say that my 250 hp is reached at 4500 rpm. Then building the same engine with but with some more porting and higher lift and duration cam and we got 300 hp at 5500-6000 rpm. That 300 hp engine maybe have ~250 hp at 4500 rpm also but missing a whole lot from idle to 1500 rpm. I will probably seldom rev as high as 4500 + rpm so that 300 hp at 5500-6000 rpm will probably never be utilized for my driving style and if I doesn't change rear gearing It will probably be a slower from the line compared to the 250 hp engine with same gearing. So that's how I think and why I want to stay around that cam duration so I dont need to sacrifice to much low end power and mpg. But I will say that Lunati Voodoo 10200700 cam sounds very interesting. But since I live in Sweden and already have the cam I'm going to run it to see how it turns out but in the future a cam change feels possible. Those other cam also sounds good. I feel I need to test and see how my way of thinking and building this engine turns out before I decide to change cam.
I have a header flange that I'm going to build my own "Hedman tight tubes" on. They are laser cut from 0.472 inch steel (12mm) so they are thick and sturdy which I think is good? They got the "connected strips of steel" on the "wrong" upper side they need to be at the bottom so I can change spark plugs. But going to build the headers first then weld in new strips of steel at the bottom and then cut the upper ones.
But back to porting my exhaust side, if you look in the picture I have done very minor work at this side of port since I didn't have any gaskets to guide me to grind away any material. But now I got this header flange from a friend so now I have something to grind away to match against. Is it worth and good for the flow to take away all the material so I match the header flange?