Rethinking my combo

I need some advice. I have come to the point where I just want to get my truck running so I can enjoy it. But at the same time I do not want a bone stock 460. As long as it is a little better then stock I will be ok.

That and I have a history that when I stall out on a project, it never gets finished. Sent 2 vehicles to the scrap yard because of that so far. This time I am determined to not let that happen.

So the build I had set out on centered around a Crane cam with specs 288/292 adv duration, 226/230 @ .050, 522/530 lift.

Being green to engine building and not realizing how low the stock compression of a 460 is, I didnt realize all the other stuff I would have to buy to get that cam to work.

So now I am looking at a Comp cam, 268H. Specs 268/268 adv duration, 218/218 @ .050, 494/494 lift. I am hoping the springs that they say are required (940-16) do not require machining on the heads. The page on Comp Cams for the cam doesnt say anything about machining on the heads (on the bigger cams it says that). But with that mild cam do I really need guide plates and screw in studs?

I am trying to stay away from having to do any machine work. I already have the bottom end of the engine together, but if I HAVE to change pistons I will. Money is the major issue here so I am trying to stretch everything as far as I can. Im no longer worried about performance at the track, I just want to drive it. Performance can come later.

Intake I am looking at would be a Edelbrock Performer RPM, and a 750 cfm Holly. Recurved duraspark distributor.

Even better would be a mild cam that would work with the stock springs, OR a cam and spring package that would not require head machining.

Heads are D3VE castings.

Tim, I've used both those cams in same 460. I rebuilt the 460 I currently have in my mud truck when it was my daily driver. Stock bottom end with the comp 268 cam and edelbrock performer and a holley 600. It did well as a daily driver and had decent power, enough to out run my lightning. When I decided to make it into a mud truck, I bought that crane cam kit and put in it along with a set of dove heads that I bought from a forum member. Same shortblock, just added cam kit, heads, and the 750 demon. I know it's not the most ideal setup, but it runs well. Chris

What springs did you run with each?

Not knowing any different in my highschool days, I ran the stock springs with the comp 268. Seemed to work ok. Springs, retainers, and locks came with the other cam and lifters. Had to machine the heads for the postive oil seals to run the springs. Chris

I think I may about have my combo nailed down. (Tho as I look back on threads I have made in the past it seems to change often haha)

What is about the max lift you can run with out having to cut the valve guides for different seals and such? Most safe lift for the factory rocker arms? D3 heads.

I read somewhere max lift on a bone stock D3 with factory rockers was .560" , but lets wait for one of the experts to chime in.

I think I have this about nailed down..

D1ve block

D3ve heads with work on the exaught side

Performer RPM intake

KB137 pistons

Eagle SIR rods (SIR6605FB)

Holly 750 cfm carb

Recurved distributor

Headers

Looking for about 400 hp, 9-9.5 cr, pump gas.

Now Im looking for help on a cam. This is for my F100, with 3.00 gears, c6 trans.
Something that will pull to 5500 rpm or so, wont require me to have the valve guides machined. Wont have the idle quality of my moms Escape.

Was looking at..

Comp Cams
x4262H
x270H
268H

Lunati 11603

How about Lunati's 61601 (213/219 @ .050 with .535/.540 valve lift with 112 LSA)
or ...... Lunati's 61602 (219/227 @ .050 with .540/.552 valve lift with 112 LSA)?
If you worried about idle, Rhoads V-Max Lifters.

Here is a vid of my 78 f150 Rering stock 460 750 demon headers and crower cam .220/.226 .524/.541 112 lobe center. Runs good probably a little to much for my 7.5-8.0 compression but it pulls good.
https://www.youtube.com/watch?v=fyKb4AxLZmo

Nice sounding truck you have there Cheatham.

Care to give us any more info on what's all in it? What's the compression, heads (ported?), gear ratio & converter stall (I'm persuming it's an automatic)? You know .... detals, detals, detals!

Great. My dad just called me and informed me that a neighbor called him right before he went to lunch and told him to tell me that if I dont move my F100 he is going to call the county on us.



Im real close to just throwing the heads on it and buttoning it up

Where do you have it sitting at (the front yard) ??????

Just a rering 78 460 stock pistons ect. Crower cam carb and headers, stock d3 heads with good springs no port work and a stock 1970 460 intake stock converter with 3.73 gears. She dont run bad for an old turd

The Pope wrote:Where do you have it sitting at (the front yard) ??????

No. Its in the side yard right by the driveway. Really the only place to put it.



Cheatham, what is the idle like with that cam? Little bit of a lope to it?

OldRedFord wrote:

The Pope wrote:Where do you have it sitting at (the front yard) ??????

No. Its in the side yard right by the driveway. Really the only place to put it.

I'd almost tell them to bite me! But I'm a little older than you and if you were to say it, well .... "You little punk!" might be the responce. If I were you, I'd just let it slide.

Yeah its got a little lope to it not a whole bunch, but I have the idle up just a little.

As far as the cam I think I will go with the Comp 270H.

And the ever changing saga over here takes yet another turn. My brother is starting college and was going to take his classes online. Well now he has to take a math and English class before he can start his program, but he has to go to the campus to take these classes. Guess what he is driving, my Ranger. Sooo in the event he decides he wants to go to the college instead of taking classes online...I need to finish the F100 so I will have a vehicle if I ever land a steady job gig sometime soon. (hopefully).

Got a couple questions now...

Can I reuse the oil pump for now, or should I just go ahead and replace? Can it be dissembled and checked out? Same with the mechanical fuel pump?

Can I get away with running a factory intake and motorcraft carb for the interm? 268h cam I guess.
Run the points dizzy I have?

Yes you can run the stock intake, carb and dizzy with a 268 cam with no problems. I would be sure and check the total timimg when ya get it fired up. Some of those old point dizzys had a lot of advance in them. But for a guy with a tach and timing light thats easy to fix.

For the cheap price of a new Melling oil pump, I'd put a new one in there. Good tight clearances in the new pump, piece of mind. Personally, I'd shim it up with a kit from Paul Kane as a minimum. I think he sells them for like $15. Bolt on the pan and forget it.

4thHorseman wrote:For the cheap price of a new Melling oil pump, I'd put a new one in there. Good tight clearances in the new pump, piece of mind. Personally, I'd shim it up with a kit from Paul Kane as a minimum. I think he sells them for like $15. Bolt on the pan and forget it.

X2

Yea, gona go ahead and replace the oil pump. Peace of mind. Looking for reliability here anyway.

If you are on a real tight budget and have to get it running, use the old oil pump, that is if you know it was working good before removal. I know what its like to be broke and trying to peice stuff togethor, its kow fun but it can be done. Be careful not to expect a race motor out of a fresh re ring job. and keep the revs low and it will last for quiet some time. nothing wrong with being cheap you just have to really look things over and go from there.

cheatham wrote:If you are on a real tight budget and have to get it running, use the old oil pump, that is if you know it was working good before removal. I know what its like to be broke and trying to peice stuff togethor, its kow fun but it can be done. Be careful not to expect a race motor out of a fresh re ring job. and keep the revs low and it will last for quiet some time. nothing wrong with being cheap you just have to really look things over and go from there.

I know it wont be a race motor, but it will be something to drive. Which is better then nothing at all.

Looking for some opinions on the Summit K3501 cam and lifter kit vs a Comp 268H.