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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #1  
Old 02-12-2008
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Cam Swap

I wan't a more agressive cam. I heard that with some performance cams you lose torque. I do not want to lose any torque and am looking for more high end power without loosing any lowend power.

What cam should i get?
What parts do i need?
All totaled up what will the price be?
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Old 02-12-2008
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you should get the Comp Cam 422 cam...it will give you high end power and keep your low end torque.....you will also need new pushrods and all the gaskets.....

you could probably do it for roughly $500..
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Old 02-13-2008
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Originally Posted by lifted97ranger View Post
you should get the Comp Cam 422 cam...it will give you high end power and keep your low end torque.....you will also need new pushrods and all the gaskets.....

you could probably do it for roughly $500..
$500 does not sound so bad. By pushrods do you mean pushrods and lifters. I have heard anytime you change the cam you need new lifters. I replaced the rockers and pushrods not too long ago < 600 mi.
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Old 02-13-2008
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lifters = pushrods

anytime you put in a new cam, you should replace the pushrods because of the excessive wear they get on the end...
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Old 02-13-2008
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I found the cam but cannot find any lifters, any idea where to get them?
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Old 02-13-2008
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as long as your newer pushrods are the length the cam specifies, then your fine with those. You DO want to replace the lifters when you replace the cam. Usually they come in a cam kit
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Old 02-13-2008
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Quote:
Originally Posted by lifted97ranger View Post
lifters = pushrods

anytime you put in a new cam, you should replace the pushrods because of the excessive wear they get on the end...
Lifters do not equal pushrods. the lifters ride on the cam lobes and the pushrods sit in the lifter and the rockers.
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Old 02-13-2008
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heh, new stock lifters are suffficent.

anything over .500 lift on the cam will require new springs. Stock ones can tolerate .500, if urs has a lot of miles id have them tested or just get new springs. u dont want a vavle spring to break or bind.

what are the specs on the cams for the 4.OHV?
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Old 02-13-2008
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Originally Posted by meemooer View Post
as long as your newer pushrods are the length the cam specifies, then your fine with those. You DO want to replace the lifters when you replace the cam. Usually they come in a cam kit
I can only find cam kits for 4.0 up to 1997.
I need one for a 1998 4.0, otherwise I found a cam but cannot find lifters.
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Old 02-13-2008
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The comp cam has .500 in. lift with the stock rocker arm raitio.
Should i be alright with that?
I had the heads replaned, valves reseated+new valve seals, replaced rocker arms+pushrods, but i don't know if i had the spings changed. (133,000mi)
Should I be OK?
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  #11  
Old 02-13-2008
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they should have been tested, u should be ok.

id go with the less of the two that summit offers.
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Old 02-13-2008
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Any idea where to get lifters, I really cannot find them?
Would the ford dealer have them at a reasonable price?
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Old 02-13-2008
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Quote:
Originally Posted by leadfoot View Post
Any idea where to get lifters, I really cannot find them?
Would the ford dealer have them at a reasonable price?
you could probably order them through NAPA or Advance auto or some other parts house...
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  #14  
Old 02-14-2008
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Quote:
Originally Posted by leadfoot View Post
I can only find cam kits for 4.0 up to 1997.
I need one for a 1998 4.0, otherwise I found a cam but cannot find lifters.
ANY cam for a '97 will fit your '98......it has the EXACT same engine.....
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  #15  
Old 02-21-2008
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There are a few options when it comes to cams...

Comp Cams 410 cam an excellent cam for a daily driver and towing. Offers great off idle torque and keeps the overall power curve nicely inside the rpm range of the stock PCM without any tunability problems. Slightly rougher idle than stock. It works fine with stock heads/springs.

Comp Cams 422 cam is more aggressive. In order to run the 422 cam, you must upgrade your valve springs to handle the .500 lift. It is recommended that you get a tune (bamachip) to add more fuel and raise the rev limiter to achieve the benefits of the cam. The addition of some exhaust port work and headers will enhance this cams output. Lopey idle.

Both cams are ground on reduced base circles, therefore, you will need longer pushrods. I do believe 5.525 are needed if the head has been milled, 5.550 if the deck surface/head are stock.

As far as torque, both cams peak in the 2500-3000 rpm region depending on the engine setup. The 410 of course would be lower, and and the 422 will be slightly higher and build more hp higher in the rev range.

Delta Cams also makes custom ground cams as well...
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