Choosing con. rods
Thread Starter
|
Senior User
Joined: Mar 2002
Posts: 177
Likes: 0
From: Sapulpa
Choosing con. rods
Im to the point of choosing my cam and rods for my 460. I am going to use this in a highboy, with an automatic, mostly for torque, but want to make sure it will be strong enough in all regards. I want to be able to wind it up to 6 grand or 7 if the need arises, never know when you might get ****** off!, and dont want to risk chucking a rod. Thought about going to DSC and getting recon. truck rods, but would I be better off getting H beam rods like on ebay, for $340? I think they are made by CAT. After Im over this hit in the wallet, down the road I plan upgrading the heads with better flowing edelbrocks or something, hence the thought of beefing things up now.
Elder User
Joined: Jul 1999
Posts: 877
Likes: 2
From: Missouri
Choosing con. rods
The truck rods should be fine for what your doing. I think they come with good bolts from DSC. Thats what I have in my pulling motor and it runs between 6 and 7000 rpm and have never had any problems. Be sure and have everything balanced.
Dennis
1999 F-350 Powerstroke
1977 Highboy 429 4-speed 35"s
1972 Ranger on a 1978 F-250 4x4
frame 466 Pulling Truck
Dennis
1999 F-350 Powerstroke
1977 Highboy 429 4-speed 35"s
1972 Ranger on a 1978 F-250 4x4
frame 466 Pulling Truck
Postmaster
Joined: Aug 2001
Posts: 2,882
Likes: 0
From: Nevada
Choosing con. rods
Any cam that's going to provide usable 7000rpm in a 460, assuming you use heads to support such a cam, will be well over .600 lift and won't be much fun or provide usable off-idle torque below about 3500rpm. And without a torque converter of at least 3500rpm, it'll be a dog off the line. I'm not aware of any hydraulic flat tappet cams other than marine or light weight vehicle applications that will provide 7000rpm in a 460. You're going to be looking at a solid flat tappet or roller cam. A mechanical roller will be a real heavy hit in the pocketbook and their high seat pressures eat valvesprings. And 6-7000rpm requires roller rockers, guideplates and 3/8" pushrods, regardless of which heads you're using.
Stock passenger rods are fine up to 5500rpm, many people run them over that on a regular basis without problems. Truck/CJ rods are designed for 6000rpm, again with many people running them at much higher rpms without problems. If your cam provides a usable power band up to 7000rpm and you don't utilize a rev limiter, that engine could easily see low-middle 7000rpms. I'd sure go with aftermarket rods for the cheap insurance factor.
Stock passenger rods are fine up to 5500rpm, many people run them over that on a regular basis without problems. Truck/CJ rods are designed for 6000rpm, again with many people running them at much higher rpms without problems. If your cam provides a usable power band up to 7000rpm and you don't utilize a rev limiter, that engine could easily see low-middle 7000rpms. I'd sure go with aftermarket rods for the cheap insurance factor.
Thread Starter
|
Senior User
Joined: Mar 2002
Posts: 177
Likes: 0
From: Sapulpa
Choosing con. rods
Ok, someone had to ruin my dream. I plan on putting a rev limiter in place for 5500-6000 to be safe. I just dont wanna chuck a rod if things get hairy. When you say up to 6 grand, you mean ran, or just peaked?
Senior User
Joined: Aug 2002
Posts: 301
Likes: 1
Choosing con. rods
I got ****** at my old race car engine a few years ago & placed the proverbial "brick on the throttle". The tach stayed a 6500 & I was gone for about 5 munutes, still running but kinda hot. Those rods had stock bolts & I had 750+ passes on them, some on the bottle. Got them in the wifes '65 F-100 now. They are a good rod, just resize them & go!
