Hey fellas- I'll try to make this as short as possible, but I need any advice I can get before I start tearing the engine down.
1974 f250 camper special(std cab)/390/c-6/4:11 dana 61
(Block)-Bore as little as needed to bring true. Deck as required for 10:1 compression. Line hone; oil mods per FTE;dress beams;high vol. oil pump;bal. crank to 0/0. Eld. perf. cam, lifters and springs, windage tray.-(Heads)Remove exhaust "bumps";surfaced(ex.&int.);bowl cut;bronze guides;pos. lock valve. seals;3 angle valve job;hardend seats;match port to intake;ported;stock valve size.(Misc.)-Eld. performer intake;Eld.600cfm carb.Stock rebuilt dist. with pertronix ignitor2 conv. & flamethrower 2 coil and thier plug wires; rapid fire plugs;flow tech headers;high flow H2O pump;electric fan; k&n air filter;1.5" swirl torque carb spacer.

Any suggestions would welcomed

 

did I miss headers in there somewhere ? otherwise don't bother with the port work, other than a tid bit of efficiency it wont matter. IMO

 

Yeah headers are in there. Flow tech for now. Actually, the port work will be mainly matching intake to head. Intake runners will be what I refer to as rough porting, smoothing flow areas, etc.Not going to be hitting high rpm's enough to warrant a "true" port and polish.
Any particularities I need to know about the FE's other than the oiling mod's?

 

JMHO...I would not use a HV oil pump. I did use one in my last 390 build. I really think an HV oil pump is only good when you're trying to get more life out of a worn out engine. If you've got a fresh rebuild a regular oil pump is more than enough. Also, I would restrict the oil flow to the heads. On an FE, it's not too hard to end up with too much oil pumped to the top of the heads...it will pool until it's above the valve guides and excess oil will get sucked down the intake valve guides. I had this problem myself...it took me a long time and a lot of extra money to figure out.

Good Luck!

Tracy

 

Thanks falconstng;Iwas wondering if a hvp would actually help any.I think I remember seeing the head restriction advice before, Thanks for bringing it back to mind. Would the direction to take on the forementioned be included in the "oil mod's" on FTE????

thanks again

 

What are the combustion chamber volumes? And what are the lift measurements of the cam?

 

Claude, where do you live, and what are you going to do with this truck once the build is finished ? I'll presume from the cam and intake that you've chosen that you plan on doing trailer pulling and other truckish things. If you're planning on useing gasoline for fuel, the 10 to 1 compression is too much. If you are planning on useing E85 for fuel, 10 to 1 is not enough. Do you have a part number for the piston you want to use ? If the 390 in your truck is unmolested, you have about 8 to 1 now. And, yes, you need the HV oilpump. Or at least it is a very good idea. I would use an M57HV if it were my engine. Unfourtunately, even many supposedly professional engine builders don't understand the thinking of why the HV is helpful or what it is supposed to do for you. It wasn't the HV pump that caused FalconStng's problem, it was lack of restriction to the rockershafts, and worn rockers. DinosaurFan, on work's old 'puter

 

I understand that the need for restrictors was there period. All I'm saying is this....if you've got a good build and all tolerances are normal, the a standard oil pump is more than enough to supply the engine....in fact you'll still want the restrictors and probably the long finger splash shields too. This issue has been discussed so many times on here. I got hit hard by it on my engine. I came away with the impression that the top oil drainback system is borderline and a little messing around and you'lll find you've now got a problem. I looked for an elegant solution but just coundn't come up with anything better than head restriction and a standard oil pump. Recently I've seen another possibility, drain lines drilled and tapped into the oil feed post. the oil tap drains excess oil back to the valley, bypassing the head oil drain. This has good potential as you can run an open system that will lower the pressure a bit and you're still quaranteed enough oil everywhere but not too much. At any rate, a HV oil pump with head restrictors will work, however all that pumped up pressure is more stress on the oil pump, oil drive shaft, & distributor...not to mention that that higher pressure directly relates to a loss of output of the engine. After a few recent instances, my views on HV oil pumps have changed. I'd use them on a worn out engine in order to squeeze some more life out of it....I'd also us them on a more race style engine where you might have cut back rod or main widths and have more leakage because if it. For most of the typical builds you see in here I really think a standard oil pump is more than enough(you'll still want the restrictors). The HV just give you more potential for problem.

Good Luck!

Tracy

 

Falcon, It is rather frustrating to see how much misinformation and misunderstanding there is out there. The purpose of a HV pump is not for 'racing' or for worn out engines. It is useful in those areas, but thats not it's intended purpose. I'm not sure what you're refering to by 'drilling the oil post'. Most of the oil in top the already drains over the intake side of the cylinderhead and into the valley......this idea that the FE has an oil drainback problem is misguided. Also misguided is the notion that the HV pump can cause problems for the dizzy and cam gears. Yes, the HV pump puts about 20-25% more load on these parts......but those parts are already much much stronger than they need to be to do their jobs. They won't even notice the extra load, they just don't care. As far as the power required to turn the pump, we're talking about something between 1/4 and 1 horsepower....are you even going to be able to measure that on an almost 400 hp engine ? In 25 years of engine building, I have never seen a worn or broken cam or dizzy gear caused by a HV pump, it just plain doesn't happen. There is way in most engines, ( FEs included ) to supply oil to the cam gear, if this is not done, even the standard pump WILL kill the cam gear and dizzy gears. Some people have been told a bunch of BS about 'normal' or 'standard' or 'proper' oil clearances needing only the standard pump to do the job. But what are normal clearances ? If we go by the numbers from Ford, if journals were on the big side of tolerance and bearing bores wear on the small side, you could have as little as .0005 clearances on the rods and mains. With things that tight, I can give you lots of pressure with about one half of the standard pump ! But running the clearances that tight on the rods and mains gains you absolutely nothing.....but you DO have a much greater risk of metal to metal contact if the oil is low or the engine is really hot. Speaking of heat, your engine also needs oil to cool the bearings. Running tight clearances is not helpful to to us here. On an engine like our FEs, there is no reason to ever run the mains tighter than .0025, and .003~.0035 would be better. On the rods, .0025~.003 is excellent. It sounds like our man Claude is going to truckish things like hauling and pulling. Think of the HV pump as being for heavy duty use. Think about the inside of your engine this summer when the outside air is more 100* and you have the AC on and you're pulling a heavy camping trailer up a long grade....your engine's bearings will be very glad you gave them enough clearance and sent them plenty of oil. The crank grows a little as it heats up, and it squirms around abit. All one does running tight clearances is increase their risk of wiping a bearing. I will gladly pay a 1/4 to 1 horsepower penalty to gain peace of mind about whether or not my bearings have enough oil and enough clearance to use it. The shop where I have worked is still in business and puts a HV pump in every engine that there is one offered for. In 25 years, there have been no problems with this practice. If HV oilpumps caused any of the problems for which they have been blamed, why hasn't this shop seen any of these problems ? DinosaurFan, on work's old 'puter