302 questions
Freshman User
Joined: Jan 2006
Posts: 37
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From: Altus, OK
Correct. However the H.O.'s use a different firing order. You are going to have to change the firing order, because you are using the H.O. cam, to 1-3-7-2-6-5-4-8.
Non-H.O.'s are 1-5-4-2-6-3-7-8.
Non-H.O.'s are 1-5-4-2-6-3-7-8.
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Junior User
Joined: Dec 2005
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If I put the H.O. cam in the truck and get running before I convert it to Mass Air will it run ok? Can you just change the firing order to run the H.O. cam? I was wondering if the H.O. cam is different between Speed Density Mustangs and Mass Air becuase if not you would think it would work in the truck. When they say "Roller" does that include the rockers as well or is that cam specific? Im also assuming that there is no difference in the size of the pushrods between the two? (Roller vs Non Roller)
Elder User
Joined: Jan 2004
Posts: 819
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From: Troy,NY
No you shouldn't use that cam in your truck. It has a different firing order. Roller cam is a specific cam that uses roller lifters. You would need new lifters and pushrods to use it .It doesn't have anything to do with the rockers. You really need to give up on that cam. It's not designed for a truck anyway. Sorry.
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Junior User
Joined: Dec 2005
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Its just that a few people Ive talked to said the cam would work, and help increase power being that its the H.O. cam. Im not looking to have a ton of problems getting this truck running so do you think this is the safest way to go..... Put the truck cam, lifters, and pushrods in it, then after I have all the parts to convert it to MA buy a truck specific roller cam, and lifters.
I also need to change the cam bearings correct when I put the truck cam in the H.O.?
I also need to change the cam bearings correct when I put the truck cam in the H.O.?
Last edited by wakojoe; Jan 18, 2006 at 08:57 AM.
Hotshot
Joined: May 2004
Posts: 12,170
Likes: 5
From: The hills of No. Calif.
As long as the cam bearings are still in good shape (I.E. no scratches, gouges or showing signs of wear like the copper layer being visible) you should be able to leave them in the block and reuse them.
I merged this thread with your earlier one, so that we would have a better idea of what's already been said on the subject.
Refer back to post #12:
This is good advice. It can be a PITA to switch cams later on when the motor's in place. The timing cover has to come off which means that you will probably screw up the oil pan gasket. Not as much risk if you use a one-piece gasket, but virtually guaranteed if you use the standard cork gasket. They do make a special gasket for this that has just the front cork pieces for the pan and a new rubber end seal, but you still run the risk of an oil leak developing if it's not done exactly right. And every time you change the cam you run the risk of scratching or gouging the cam bearings.
By far the best way is to wait a little longer till you can afford the cam you really want and install right from the start. If you have to wait till you can afford the Mass Air conversion to run that cam, then you're still better off.
(With some scrounging, you may be able to find the Mass Air stuff you need off a wrecked car more cheaply than buying the conversion kit.)
I merged this thread with your earlier one, so that we would have a better idea of what's already been said on the subject.
Refer back to post #12:
Originally Posted by MustangGT221
The HO cam would work, but do ya really wanna switch it when you run MAF? It'll be a heck of a lot easier to do all of this at once. Put that setup together and run it off MAF with a comp cam and 1.6 rockers.
By far the best way is to wait a little longer till you can afford the cam you really want and install right from the start. If you have to wait till you can afford the Mass Air conversion to run that cam, then you're still better off.
(With some scrounging, you may be able to find the Mass Air stuff you need off a wrecked car more cheaply than buying the conversion kit.)
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Junior User
Joined: Dec 2005
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I was told by the guy I got the truck from that the old cam is junk do to the fact that he changed the oil in the truck a few times in 160k. At this point I cant put the mass air in yet becuse buy time I buy everything but the ma meter it would be at least $500, the wiring is big bucks... So I was thinking buy a sd cam for now and down the road convert it. Ill just have to do more work later and take my chances with oil leaks.
Freshman User
Joined: Jan 2006
Posts: 37
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From: Altus, OK
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Post Fiend
Joined: Nov 2001
Posts: 14,947
Likes: 6
From: Topsfield, MA
You can get a wiring harness from FordFuelInjection for I think $150 - or make one yourself it's not hard when you follow a diagram and take your time.
Look up MAF threads with the search - you don't need to spend a lot of money in order to get the job done.
Just the right mustang computer, the wiring, a MAF sensor, and you're good to go. Not very difficult things to pick up.
Look up MAF threads with the search - you don't need to spend a lot of money in order to get the job done.
Just the right mustang computer, the wiring, a MAF sensor, and you're good to go. Not very difficult things to pick up.
Elder User
Joined: Jan 2004
Posts: 819
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From: Troy,NY
Originally Posted by Low55
SD and MAF HO cams are the same.
Last edited by ken75ranger; Jan 18, 2006 at 07:45 PM.
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Junior User
Joined: Dec 2005
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Originally Posted by ken75ranger
The problem is he has a truck. It's different firing order than the HO cam. I'm not sure if that make a difference with the batch-fire injetors or not. Plus HO cams are roller, his truck 5.0 is not.
I also was told its more diffecult to convert a truck to ma then a Mustang because of the o2 sensors and wiring. I have the injector harness injectors and ma meter but the guy from Professoinal Mass Air Systems told me its not as easy as plugging in the Mustang injector harness, and adding an o2 sen. Thier wiring kit is like $300 or more without the meter or 02 sensors.
So now I have been rethinking this swap. I wanted this H.O. in bad but by the time I buy a cam, ma harness, oil pump etc Im getting way beyond my budget. This simple swap seems to be getting expensive!!
Last edited by wakojoe; Jan 18, 2006 at 10:25 PM.
Lead Driver
Joined: Nov 2002
Posts: 9,558
Likes: 45
From: Concord, NC
I have read on this board that the stock mustang HO engine can be run on the stock speed density setup. I'm sure I'll draw fire for that, but I do remember people doing this without mass air.
Hotshot
Joined: May 2004
Posts: 12,170
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From: The hills of No. Calif.
Well, seeing as how SD was the stock setup before Mass Air on HOs, I'd have to agree with you. For example, my HO out of an '88 Mustang is SD, they didn't switch to Mass Air till '89, '88 in Calif. (Although mine was an '88 LX CHP Special Services vehicle, definitely a Calif. car...I'm still trying to figure out why it had SD and not Mass Air.)
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Junior User
Joined: Dec 2005
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Originally Posted by EPNCSU2006
I have read on this board that the stock mustang HO engine can be run on the stock speed density setup. I'm sure I'll draw fire for that, but I do remember people doing this without mass air.
I would like to use the H.O. harness to save money if poss.
The sd Mustang has two o2 sensors and the truck has one so why does the sd Mustang monitor both sides and the truck doesnt?
Lead Driver
Joined: Nov 2002
Posts: 9,558
Likes: 45
From: Concord, NC
I mean stock as in what came in the truck from the factory. All you would do is install an HO 5.0 out of a mustang in the truck using the truck wiring, intake manifold, etc., and run the truck computer as it came from the factory. This would be instead of converting to mass air if that is too much trouble. There are a lot of differences between the mustang MAF computer and the truck speed density computer. The mustang wiring harness isn't really a direct swap for the truck harness, so one way or another you'll have to modify wiring to go to MAF. The mustang uses two O2 sensors to more closely monitor engine A/F ratio since the mustang is more performance oriented than the trucks.