Yes I know it's a 6, so please don't tell me to just "Swap an 8". I have my reasons why I'm sticking with the I6. So that out of the way, I'm first working on a new camshaft. I have a 1977 Maverick 250ci. I want to get some more power out of it, obviously, but more so my father and I are "restoring-modding" a car. He's done cams before, but all on 302s, so I'm wanting to do a cam myself to get the "hands on" experience of it. I saw Summit sells Comp Cams with all sorts of durations/lifts, and I am just curious which kind I should be looking into? They had lifts of .446,.440, .436, .456...all of which is Greek to me, and my father says he's not sure what to use on I6 models. So with that in mind, I'm not looking for a drag car, just a bit more horsepower/torque and more so for the learning experience. Should I do straight cam? Or Cam and lifters? Hydraulic? Solid? Anything to help me out or suggestions is really appreciatted! Thank you.
i'd recomend definatly getting a 2bbl carb on it like i did. the stock 1bbl can barly feed a stock engine the links above are definatly the way to go
Thanks for the links, but I've been to both those sites already, and many others, and I just need help selecting the right duration/lift and such that will suit my wants. I know I could order just any camshaft they say will fit my car, but when you see cams they have about 9 you can chose all of which have the same factory descripition for powerbands. Any help on duration and lifts that best suit a daily driver with a little more horse?
Oh and I forgot to mention, my father actually has a brand new, in box/shrink wrapped Offenhauser "tri-power" intake manifold for my 250. He's totally against me putting in on the car because he thinks it's a waste and like "flushing a toilet" of gas with only slight gain.
My 250 has the Comp Cams 252H cam in it. More bottom end than stock; maybe a tad better on top end, but a very small tad. However, it does give the engine a nice "thumpity-thumpity" through the header. When I finally add the 2bbl, it will wake up the cam and make use of the exhaust.
I see the one you are talking about, and it says the operating range is more low end oriented (500-4,200rpm). Did you put the Comp Hydraulic Lifters as well, or just cam? There are others that show a more top end oriented way with 1000 or 1,500 operating ranges.
"I'm not looking for a drag car, just a bit more horsepower/torque." the ...head...is what you need to address first.that...turd intake...is the choking point. changing the ...cam...alone is not going to do what you want. it looks to me like what you found here, www.fordsix.com www.classicinlines.com ,is not what you wanted to hear.:sorry: ...been there done this... Frank
To select the best cam, we need to know what RPM you are looking for, the rear gears you are going to run and what transmission you have in it. You will need that tri-power kit if you go any bigger than 218 duration (SAE). A Holley/Weber progressive two barrel is not sufficient when the RPM goes over 6000 RPM.
"I'm not looking for a drag car, just a bit more horsepower/torque." as Hawkco, said that...252H... cam will do this. without addressing the points you mentioned and a head he still want have anything... ......
I'd love to address the head, as well as my financial state as a poor working college student with 3 cars, and when the aluminum heads you are referring me to cost $500 more than the car itself...I hesitate. Regardless, I wanted to do a new cam for the experience, as mentioned, and because I've always been told that's an easy way to do a modest gain in power, and also because THEY ARE CHEAP. Plus I'm not looking to poor thousands into a late 70s I6. Just looking for the right camshaft that can still be considered "mild" or a daily driver. Thanks for the input!
I honestly have no idea what my car does at what RPMs. It doesn't have a tachometer and I've only had the car for a little over a month, so I've not had one installed either. The car is 100% stock, except for the beauty rings, and I was told it has a auto C4. As for gears...I don't know. Whatever is stock I'm keeping.
"I wanted to do a new cam for the experience" there is a lot of work and time in changing a cam in a 250. do a price and parts list list first... cam cam bearings lifters timing gear set pushrods (if not a stock cam) gaskets pull motor/radiator/condenser etc. etc. ...and when you are through...old motor with new cam...5 cents worth of power gain if you don't rebuild the complete motor. if experience is what you want, get a junk motor and tear it down and put it back together...use old parts and gaskets. JMO ......
yea all that time and $ would be much better spend elseware. for 1/2 that you could have a new gear in you 8'' for example
