Roller cam?
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Cargo Master
Joined: Mar 2003
Posts: 2,333
Likes: 296
Roller cam?
Does anyone know off hand if a 93 150 w/ 5.0 is a roller or not?
Thinkin about a Motorsport 5.0 w/ GT heads but I'll have to recam it to stock specs to run with my computer.
With the E4OD I can't go mass air.
Thinkin about a Motorsport 5.0 w/ GT heads but I'll have to recam it to stock specs to run with my computer.
With the E4OD I can't go mass air.
Cargo Master
Joined: Jun 2001
Posts: 2,571
Likes: 22
From: Oxford, Indiana
Roller cam?
The '93 truck 5.0 has a roller-ready block, but not the roller cam and hardware. I'm pretty sure that the crate motor that you have your eye on will have the roller cam. You can run a flat tappet cam in the roller block, though. Obviously, as that's the way your truck's current powerplant is set up. Just remove the roller cam and hardware and install a flat tappet cam that will keep the EEC happy. You should be able to recover the price of a new cam and lifters by hawking the un-used roller and stuff on Ebay. Take a look at Comp Cams part# 31-255-5. It's a computer-friendly grind that will make a big difference in torque on the low end.
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Cargo Master
Joined: Mar 2003
Posts: 2,333
Likes: 296
Roller cam?
Thanks
That's kinda what I thought.
What is your opinion on the amount of ponies you actually will have if you take the "320HP GT 40 aluminum head crate engine", that is rated with a high performance roller cam, MS racing induction, headers and 65mm throttle body and replace it with the factory '93 speed density EFI system, and a tame cam?
The above setup is only $3200, which sounds like a deal if it will produce 250 HP after de-tuning it.
The mustang crate engine is $2900 and it is only 225 HP.
I think the stock '93 truck engine is rated at only 195 HP.
That's kinda what I thought.
What is your opinion on the amount of ponies you actually will have if you take the "320HP GT 40 aluminum head crate engine", that is rated with a high performance roller cam, MS racing induction, headers and 65mm throttle body and replace it with the factory '93 speed density EFI system, and a tame cam?
The above setup is only $3200, which sounds like a deal if it will produce 250 HP after de-tuning it.
The mustang crate engine is $2900 and it is only 225 HP.
I think the stock '93 truck engine is rated at only 195 HP.
Cargo Master
Joined: Jun 2001
Posts: 2,571
Likes: 22
From: Oxford, Indiana
Roller cam?
Oh, you'd still end up with at least 250 HP. I didn't realize that you were talking about an entire long block, though. You may run into problems with getting more air into the engine than the SD computer is expecting and experience a lean condition at full throttle. I'll tell you what I think that I'd do. Either run the new long block as-shipped and do a mass air conversion or run it as-shipped and get your SD computer chipped. The mass air conversion is about $600 and it'll have a Mustang computer that will be right at home with that roller cam. That's a big chunk of change! Talk to Ken, the webmaster, over on the computer tuning forum about custom burning a chip for your SD computer. He can do it by mail order and the pricetag will be about half of the mass air conversion. If you're going to spend the money on the crate motor, you might as well spend the money that you would spend on de-tuning it on an upgraded electronics package to take advantage of what it comes with and end up with more power anyway.
More Turbo
Joined: Mar 2003
Posts: 578
Likes: 1
From: Green Bay Wi
Roller cam?
I bought a 99 explorer motor from the yard i worked at with 27,000 miles on it and used the long block. the rest was the old stuff from my 89 bronco.Only hitch i had was the exhaust man on the drivers side.I had to use the 99 manifold due to the angle plug heads the gt-40 has. Other than that it went really well.I was VERY happy with the 3-4 mpg i got from the roller cam engine change over.
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Cargo Master
Joined: Mar 2003
Posts: 2,333
Likes: 296
Roller cam?
The speed density system should handle the air flow but have a problem with the loss of vacumm that a cam does. Super Ford mag claimed that the SD system should handle the "detuned" GT version.
I love my truck but before I spent too much on it in one fell swoop, I would just buy a new one.
I should probably go with a used or rebuilt stock piece instead of de tuning the GT.
I love my truck but before I spent too much on it in one fell swoop, I would just buy a new one.
I should probably go with a used or rebuilt stock piece instead of de tuning the GT.
More Turbo
Joined: Mar 2003
Posts: 578
Likes: 1
From: Green Bay Wi
Roller cam?
I have no problems like that at all.Everything works well.But then again the cam in a 99 explorer is probably a little differnt than a mustang cam
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Senior User
Joined: Apr 2002
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Roller cam?
I just talked to jasper engines, and the tech said that they listed roller cams in a 1994 ford f150 302? Is this right? I thought I had rockers, but I've never opened 'er up
Matt
Matt
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