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2 different cam profiles to discuss

I have posted them here a few months back, all through the porting project...

I need to update that thread I guess sometime.

I'll have final flow numbers when the heads are done, still have some cnc work to be done to them..
 
ewc... I used them with the other motor, the p motor has different pistons and stock 6.5 pistons aren't compatible either way so I will be coping & changing it some to meet the cc's needed to get to the comp I want...

AK.... I'll be adding valve reliefs to the top's for both valves... I believe the way Kennedy's tops are work's very well, maybe even keeps some of the piston rock down some...
 
I posted pics here but I can't find them....

The tops are the same style, the rest looks like a cummins piston, long round thick skirts & large pin....

I'll see if I can find pics somewhere or take more later....
 
Thanks Leroy . Are the rods different for the P400 ? Sure look beefier .
 
Yes. I did not have a regular one to compare but they looked more "beefy" on the piston pin area and overall. The caps are fractured and have bolts that go through the cap into the rod instead of a stud sticking though the cap with nuts.
The fractured cap creates a perfect surface for alignment. You must get the cap on the rod that it belongs to and the proper orientation or it will not even come close to fitting.
 
tanman_2006 said:
Sub'd, I like cam 2 and a set of rockers.

How close will the valves touch with that combo? Aren't there people running the P400 and Harlan rockers,
Click to expand...

Tanner I don't have all the numbers I need yet, can't do anything with the pistons until the heads are complete & cc'ed.

Already know space will be needed for valves as the lift is somewhat more with 1.7's... exactly how much will be cut remains unknown at this time...
 
These are stock cam grinds? I was thinking that the 1.7 rockers were supposed to work on a stock engine without any modifications.

I was under the impression that the stock cam had a 101* icl. I am running ~111 on mine, with stock lifters and a slightly lower lift (.275" I think is what it ended up being at the cam) I have fairly tight clearances. I haven't tried the 1.6 rockers yet though. I am not really sure how close my cam compares to a stock cam though as far as your other specs. I didn't think about it at the time, but I may put the degree wheel back on and check to compare.


Sent from my iPhone using Tapatalk
 
FWIW, Kennedy 18:1 piston vs stock piston

5e121ab97e431bd29825f21dea520748.jpg


f624f5c28b063d8ebee70d154f3f405b.jpg



Sent from my iPhone using Tapatalk
 
Yep, stock cam grinds...

You could always send the cam off and have it read for around 100$ then you would know for sure what you have in the stick if there is any doubt... would be interesting to see a reground cam and see for sure what they changed... other than just stating a few things maybe...

1.5 rockers = .420" @ valve
1.6 rockers = .448" @ valve + .028" over stock
1.7 rockers = .476" @ valve + .056" over stock

That's .056" more valve lift than stock @ 1.7.... that number alone will need a good bit more clearance me thinks but I'll know more a little later...

Do you know how much clearance you have or had in stock trim??

Some putty on a piston might be a good for finding where your at....
 
Have ya done a simple valve drop measurement @TDC yet??

On this P motor mine were at .062" in / .059" ex

This gives me a rough idea how to proceed along with more figures..
 
sctrailrider said:
Have ya done a simple valve drop measurement @TDC yet??

On this P motor mine were at .062" in / .059" ex

This gives me a rough idea how to proceed along with more figures..
Click to expand...


I didn't do it at tdc, I tried to get a rough estimate of how much clearance I had before the valve hit the piston in a revolution and I ended up with .066" before the piston hit the valve. I think that was just before top dead center when it would hit.

I don't think our rockers are quite 1.5 either. I'll have to look at my notes again, but when I measured lift at the valve, it was less than what it should have been at 1.5 times the lift of what I measured the actual cam lift at.
 
sctrailrider said:
Yep, stock cam grinds...

You could always send the cam off and have it read for around 100$ then you would know for sure what you have in the stick if there is any doubt... would be interesting to see a reground cam and see for sure what they changed... other than just stating a few things maybe...

1.5 rockers = .420" @ valve
1.6 rockers = .448" @ valve + .028" over stock
1.7 rockers = .476" @ valve + .056" over stock

That's .056" more valve lift than stock @ 1.7.... that number alone will need a good bit more clearance me thinks but I'll know more a little later...

Do you know how much clearance you have or had in stock trim??

Some putty on a piston might be a good for finding where your at....
Click to expand...


I don't know what clearances were with the stock cam. I based the 101 icl off of the specs I read on a SSDiesel cam, which, I believe is based off of the marine cam. I assumed that was the stock icl. Since I had to move my timing marks by one tooth and then a 2 degree offset to get the 111, that reassured me that stock was around 100. But I guess if the cam was changed that much, the icl could have been moved so the timing had to be adjusted accordingly.

I plan to check clearances with the putty once I get my 1.6 rockers on the engine.
 
I haven't done a revolution measurement yet either, will need to get some things back together first... I'll do a stock rocker to get a base and go from there...

I need to re read your thread as I've only skimmed through it so I don't know what all ya did....
 
3500_6.5 said:
I don't know what clearances were with the stock cam. I based the 101 icl off of the specs I read on a SSDiesel cam, which, I believe is based off of the marine cam. I assumed that was the stock icl. Since I had to move my timing marks by one tooth and then a 2 degree offset to get the 111, that reassured me that stock was around 100. But I guess if the cam was changed that much, the icl could have been moved so the timing had to be adjusted accordingly.
Click to expand...

With a regrind ya just don't really have anything to ponder over, no spec card hurts and all anyone can do is "swag" it....

I'll do some re reading to get caught up on what your doing..
 
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