Anyone have any good recommendations for a torque/RV cam? I will be rebuilding my 1986 F350 460 soon and was looking for a slightly bigger cam than stock. I will be raising CR to 9.5:1, advancing cam to pre-72 specs, everything else pretty much stock. I have C6, 3.54 ratio rear.
Thanks
Makr

 

id say lunati 61600 or 61601 should be good for you... but youre still running pump premium with 9.5-1 compression and cast iron heads... if you want to be able to run regular youd have to switch to aluminum heads, get a much bigger cam (not practical for a towing or daily driver application) or lower the compression a half a point to about 9-1

 

I like the specs on the Lunati cams. I've also had others recommend the 61600 or 61601. With the weak exhaust port on Fords, I usually like the split duration, higher lift cams. I also have heard about single pattern working good for lower RPMs since the exhaust port flow is not limiting at lower RPMs. I was also looking at the Comp cams, 260H with 212 @.050, .484 lift and 110 deg Lobe Sep. Any ideas? Lets talk about some cams.

Thanks
Mark

 

mark460,
This is what I am doing to my 1987 460 for my motor home.
Intake Performer 3766
Carb Performer 1411 750cfm
Cam Luanti part # 6160 lift 503/535
Double roller timing set
Crane rocker arm conversion kit.
Roller rockers by Harland&Sharp
Valves Ferra stainless 5000 series 2.19 int. 1.76 exhaust. I had new hardened seats installed on the exhaust side because Ford only does induction hardening on the factory seat. That means it is more of a surface hardening and not verrey thick. I was in the machine shop when they cut the head for the new seats and it only cut about 2 turns before you could hear it break into the softer metal. They told me it was possible /probable to cut through doing a valve grind.
ARP main and rod bolt kit.
Water pump by Milodon high performance (has plate on the impeller looks just like the ones they sell as a kit)
MSD Pro billet Distributor
MSD 6A box
Thorley TRY Y long tube headers for improved low end torque always use a X or cross over pipe this helps torque to.
TCI low speed stall torque converter to reduce slippage and improve mileage part# 443630
You really need to go to
http://www.reincarnation-automotive.com/
and see the info there on what to do to your heads to make them flow better.
If you don’t want to do the work yourself you can have it done.
Some of the best gains come from opining up the exhaust side of the heads.
Any questions feel free to ask.
I am expecting to get 350-375 rw hp and 500-525fp torque.
I have found a place to run it on a dino when I finish just to see what reality is. There is some controversy on what carb 750 or 600 is best. I have the 750 and will run it first and see how it works.
By the way I think if you can afford supper priemum go for it. I want about 8.5-8.8 compresson so when I fill up the 125 galon tank it dosen't hurt as much.
Bill

 

mark, the stock cam with stock rockers gives you .487 lift, why would you downgrade in the lift department?
bill, i think youll be disappointed in the chassis dyno. i would figure around 290-300 rwhp with that combo... you lose alot through the drivetrane... 25%+, also ive heard bad things about the harland sharp rockers... if you want roller rockers get the cranes, frpp blues or trick flows- ive heard the harland sharp rockers are difficult to set up, may require pushrod clearancing, and will break down if pushed hard.

 

Yes the lift is almost the same, but the comp cam has more duration. I don't know where the lobe centers are in comparison. I still perfer the higher lift with split duration on Ford engines so I'm leaning on getting the Lunati Cam,b ut now I'm thinking about going with the 61601. This was mostly from my experience messing around with Clevelands. I have decided to keep the compression at around 9:1 or slightly below. I don't want to have detonation problems and I don't want to compromise ignition timing to make up for it.

 

in general, the more lift the more torque you get (until you reach the flow limit on the heads) and the more duration the higher the torque comes on in the rpm range... thats why id go the 61600 rather than the 601... less duration

 

I haven't heard aneything specific on the Harland & Sharp rockers. Do you have some specifics? This is a low rpm torque moter so I dought they will be "pushed".
I think there should be a marked inprovment over stock hp and torque numbers. Well at least we will have some real numbers when I get done not "I think" numbers. The stock numbers that I found were 225 HP. and 335 torque or in that range I don't have the book handey.

 

but those arent rear wheel hp... those are flywheel hp with accessories and exhaust attached... rear wheel hp will be lower by somewhere around 25%... if you had bigger tires it could be as high as 33%
if you want, you could go do a search on harland sharp rockers over on www.460ford.com theyll be able to tell you more about the rocker issues there.

 

Ok guys, Please do not get on me for hyjacking the thread. I asked in a separate thread but got no reply. You guys sound like you've been around the 460 a time or two,....
Question: Does the EFI 460 in my 1990 F350 in front of the E4OD have flat or roller lifters? The engine has never been into and has 106K miles.
thanks,
ray

 

its a hydraulic flat tappet... every factory 460 in history is that way... the only way to get a hydraulic roller 460 is to retrofit it with some crane retrofit lifters, and either their shelf retrofit cam or a custom cam
i think there were 2 429s that got a solid flat tappet cam... the boss 429 and the scj... but not positive on that.

 

darrin999 is right on this.

 

i say the 210 218 @.050 comp cams xtreme 4x4.....from personal experiance that is

 

I think you might want to re read raytasch's post.

 

i think he was answering the original thread question, trying to get back on topic